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Top JavaScript Developers

JavaScript powers everything from interactive websites to complex enterprise applications. Partnering with an experienced JavaScript development agency ensures your product is fast, secure, and ready to scale. Clutch makes it easy to find trusted providers by publishing in-depth, verified client reviews and transparent performance data. Use our filters to sort agencies by budget, location, framework expertise, and more. Looking for regional specialists? Browse firms in the United States, United Kingdom, or Canada to compare portfolios and pricing in your market. Start exploring today and shortlist partners that align with your goals.
Ratings Updated: September 24, 2026
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22,371 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • VisEngine Digital Solutions Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49
    London, England

    Services provided

    20% Web Development
    20% AR/VR Development
    20% Interior Design +2
    20% Mobile App Development
    20% Video Production

    Focus Areas

    29% JavaScript
    29% C#
    14% C++ +2
    14% Python
    14% Ruby

    VisEngine Digital Solutions is a small AR/VR development company headquartered in London, England and North Arlington, New Jersey. Their services include AR/VR development and Interior Design.

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  • 10am Digital Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    2 - 9
    North Booval, Australia

    Services provided

    50% Web Development
    20% Web Design
    15% UX/UI Design +2
    10% Content Marketing
    5% Logo

    Focus Areas

    30% JavaScript
    30% PHP
    20% SQL +3
    10% AJAX
    5% Python
    5% Typescript

    Founded in 2019, 10am Digital is a small website development company located in North Booval, Australia. Their team offers Web Development and Web Design.

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  • OVERSOFT Logotype

    5.0 1 review
    $1,000+
    $50 - $99 / hr
    2 - 9
    Torino, Italy

    Services provided

    20% Web Development
    30% IT Managed Services
    25% E-Commerce Development +3
    10% Low/No Code Development
    10% Web Design
    5% Branding

    Focus Areas

    50% JavaScript
    25% Python
    15% PHP +1
    10% Swift

    OVERCLOCK Technologies provides e-commerce website development, branding design, and car filtering services, with a focus on offering good value for cost. Reviews highlight their exceptional project management, timely delivery, and proactive customer feedback integration. Clients commend their dedication to user experience, highlighting features like user-friendly interfaces, secure transactions, and responsive design, contributing to improved customer satisfaction and business growth.

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  • EWN Bangladesh Limited Logotype

    Not yet reviewed

    $1,000+
    Undisclosed
    10 - 49
    Dhaka, Bangladesh

    Services provided

    25% Web Development
    30% Mobile App Development
    15% E-Commerce Development +3
    10% Custom Software Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    30% Python
    20% Kotlin +2
    20% Swift
    10% Typescript

    Founded in 2021, EWN Bangladesh Limited is an app development firm. The company focuses on Mobile App Development and Web Development, and is small.

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  • FAI Agency Logotype

    4.5 1 review
    $1,000+
    $150 - $199 / hr
    Freelancer
    Atlanta, GA

    Services provided

    25% Web Development
    25% API Development
    25% Mobile App Development +2
    15% AI Development
    10% IT Strategy Consulting

    Focus Areas

    10% JavaScript
    55% Typescript
    15% HTML5 +2
    10% PHP
    10% Rust

    FAI Agency is a web development company specializing in advanced Web Application Development and Custom Website Development solutions. The reviews highlight a 100% positive feedback rate, emphasizing their seamless collaboration, technical expertise, and flexibility. Clients particularly appreciate their responsive communication and commitment to project success, even under evolving requirements.

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    0 of 1 Web Development reviews are 5 stars
    1 new review for Web Development in past 6 months
    $10,000 – $49,000 avg. project cost

    Web Development PROJECT HIGHLIGHT

    AI Development & Consulting for Applied AI Research Lab

    4.5 — FAI Agency provided AI consulting and SI for an applied AI research lab. The team integrated a solution for analyzing AI bot crawler traffic. Read more
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    Industry Experience

    FAI Agency has demonstrated strong expertise in the research industry, particularly in applied AI, showcasing a commendable ability to deliver timely, effective solutions for complex requirements. Clients highlight their seamless collaboration, flexibility with timelines, and technical aptitude. The positive sentiment reflects their impact in the research space, positioning them as a reliable partner for projects requiring innovative AI solutions and effective project management.

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    Research

    Average Project Cost Breakdown

    $10,000 to $49,000 (1)

    What Clients Have Said

    Clients generally perceive FAI Agency as providing strong value for money, noting their flexibility with budgets and timelines. One client highlighted the ease of collaboration and responsiveness, stating, "Jamal was very flexible with our timelines and budget," which is often hard to find. The agency's ability to deliver on time and adapt to evolving project needs further underscores their commitment to client satisfaction, suggesting that the overall cost aligns well with the quality of service provided.
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  • The Pixxel Agency Logotype

    5.0 1 review
    $1,000+
    $25 - $49 / hr
    2 - 9
    London, England

    Services provided

    40% Web Development
    40% Web Design
    20% Search Engine Optimization

    Focus Areas

    34% JavaScript
    33% PHP
    33% SQL

    The Pixxel Agency specializes in Website Development and Web Design, providing comprehensive and detailed proposals that cater to clients' needs. Reviewers commend the agency's creativity, patience, and excellent customer service, noting their quick turnaround and ongoing support even after project completion. Overall, clients highlight their effective communication and ability to deliver high-quality online development solutions.

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  • IDEAPORT RIGA Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    50 - 249
    Rīga, Latvia

    Services provided

    15% Web Development
    25% CRM Consulting and SI
    20% Generative AI +5
    10% Custom Software Development
    10% Mobile App Development
    10% UX/UI Design
    5% Cloud Consulting & SI
    5% IT Strategy Consulting

    Focus Areas

    50% JavaScript
    20% Java
    15% ASP.NET +2
    10% Go
    5% Python

    Located in Rīga, Latvia, IDEAPORT RIGA is a CRM consulting and SI company. Founded in 2007, the team focuses on CRM consulting and SI and Generative AI.

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  • AlxTel, Inc Logotype

    Not yet reviewed

    $250,000+
    $50 - $99 / hr
    10 - 49
    Silver Spring, MD

    Services provided

    10% Web Development
    10% Custom Software Development
    8% IT Managed Services +37
    8% Unified Communications Consulting & SI
    6% Robotics Process Automation
    5% CRM Consulting and SI
    5% Cybersecurity
    5% IT Strategy Consulting
    5% Logo
    3% Content Marketing
    3% Search Engine Optimization
    3% Social Media Marketing
    2% Affiliate Marketing
    1% AI Development
    1% Application Management & Support
    1% Application Testing
    1% Architectural Design
    1% BI & Big Data Consulting & SI
    1% Blockchain
    1% Cloud Consulting & SI
    1% Conversion Optimization
    1% Digital Strategy
    1% Document Digitization & Management
    1% E-Commerce Development
    1% ECM Consulting and SI
    1% ERP Consulting and SI
    1% Ecommerce Marketing
    1% Email Marketing
    1% Enterprise App Modernization
    1% Graphic Design
    1% IT Staff Augmentation
    1% IoT Development
    1% Low/No Code Development
    1% Mobile App Development
    1% Other IT Consulting and SI
    1% Pay Per Click
    1% Product Design
    1% UX/UI Design
    1% Wearable App Development
    1% Web Design

    Focus Areas

    16% JavaScript
    5% AJAX
    5% ASP +23
    5% ASP.NET
    5% C#
    5% C++
    5% Java
    5% Objective C
    5% Other programming & scripting languages
    5% PHP
    5% Python
    5% Ruby
    5% SQL
    5% Swift
    5% Visual Basic
    4% Kotlin
    1% Apex
    1% C
    1% ColdFusion
    1% Delphi
    1% Elixir
    1% Ember.js
    1% Go
    1% Perl
    1% Redux
    1% XML

    AlxTel, Inc is a custom software development firm. Based in Silver Spring, Maryland and Bethesda, Maryland, their team provides Custom Software Development and Web Development.

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  • Cardiff App Developers Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49
    Cardiff, Wales

    Services provided

    25% Web Development
    25% AI Development
    25% Mobile App Development +3
    10% Application Management & Support
    10% Low/No Code Development
    5% IT Staff Augmentation

    Focus Areas

    15% JavaScript
    15% Kotlin
    15% PHP +4
    15% Python
    15% Swift
    15% Typescript
    10% HTML5

    Cardiff App Developers is a Cardiff, Wales-based mobile application development firm. The team specializes in Mobile App Development and Web Development.

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  • Deevotech Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Ho Chi Minh City, Vietnam

    Services provided

    60% Web Development
    20% Custom Software Development
    15% E-Commerce Development +1
    5% Mobile App Development

    Focus Areas

    80% JavaScript
    20% PHP

    Launched in 2019, Deevotech is a small web development company in Ho Chi Minh City, Vietnam. Their team focuses on Web Development and Custom Software Development.

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  • Artspace Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    T'bilisi, Georgia

    Services provided

    30% Web Development
    35% Custom Software Development
    10% IT Staff Augmentation +4
    10% Low/No Code Development
    5% E-Commerce Development
    5% IT Strategy Consulting
    5% Mobile App Development

    Focus Areas

    15% JavaScript
    20% PHP
    15% Java +6
    10% HTML5
    10% Other programming & scripting languages
    10% Python
    10% Typescript
    5% Kotlin
    5% Swift

    Artspace offers Website Development and Web Design services, evidenced by their ability to create a unique auto dealership website for TL Group. Clients praise Artspace for delivering projects on time, managing complex tasks efficiently, and demonstrating high-quality standards, often exceeding expectations where other companies could not. Their work is characterized by effective project management and responsiveness to client needs.

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  • YohDev Logotype

    Not yet reviewed

    $5,000+
    $200 - $300 / hr
    2 - 9
    Winston-Salem, NC

    Services provided

    30% Web Development
    30% Custom Software Development
    20% Cloud Consulting & SI +2
    15% E-Commerce Development
    5% UX/UI Design

    Focus Areas

    70% JavaScript
    15% PHP
    15% SQL

    YohDev is a software development firm. They focus on Custom Software Development and Web Development and were established in 2017. The firm is headquartered in Winston-Salem, North Carolina.

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  • IntersoftKK Pvt. Ltd. Logotype

    Not yet reviewed

    $5,000+
    < $25 / hr
    250 - 999
    Kolkata, India

    Services provided

    33% Web Development
    34% Mobile App Development
    13% Custom Software Development +2
    10% Low/No Code Development
    10% Robotics Process Automation

    Focus Areas

    20% JavaScript
    50% PHP
    10% AJAX +2
    10% Other programming & scripting languages
    10% Swift

    IntersoftKK Pvt. Ltd. Is an app development company. They offer Mobile App Development and Web Development and were established in 1998.

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    $1,499 Small team to build a simple idea $2,999 Medium team for complex ideas $4,999 Large team for fast development and large projcts

    Web Application Development

    Our web application development service creates custom, secure, and user-friendly web applications using the latest technologies and best practices. From planning to deployment, we offer an end-to-end solution to help businesses reach their full potential online.
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  • NexLevel Tech Logotype

    4.5 1 review
    Undisclosed
    $25 - $49 / hr
    10 - 49
    Middletown, DE

    Services provided

    10% Web Development
    20% CRM Consulting and SI
    10% Content Marketing +6
    10% Digital Strategy
    10% Fractional CMO Services
    10% Low/No Code Development
    10% SMS Marketing
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    10% JavaScript
    30% SQL
    25% PHP +2
    20% Apex
    15% AJAX

    NexLevel Tech is a web development company renowned for its expertise in custom website development and full-stack web development services. The reviews reflect a 100% positive response, highlighting their ability to deliver on time, offer customized solutions, and maintain proactive and transparent communication. A suggestion for improvement was the provision of more detailed written guides.

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    0 of 1 Web Development reviews are 5 stars
    1 new review for Web Development in past 6 months
    Less than $10,000 avg. project cost

    Web Development PROJECT HIGHLIGHT

    CRM Consulting & Dev for Marketing Agency

    4.5 — A marketing agency hired NexLevel Tech for CRM implementation and onboarding. The team was responsible for ensuring the Hubspot system was set up appropriately and customized to meet the client's Read more
    Read 1 Review

    Industry Experience

    NexLevel Tech has demonstrated expertise primarily in the Consulting industry, particularly in marketing agency solutions. Clients highlight their strengths in HubSpot onboarding and implementation, showcasing their ability to enhance lead conversion rates and campaign ROI. The overall sentiment reflects strong satisfaction with their timely delivery, proactive communication, and customized solutions. Potential clients in the Consulting sector seeking CRM optimization and marketing process improvement would find NexLevel Tech to be a fitting partner.

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    Consulting

    Average Project Cost Breakdown

    What Clients Have Said

    NexLevel Tech is recognized for its competitive pricing and strong value for money, as highlighted by a client who noted that their pricing fit within budget and offered good value. The Head of Marketing at a consulting company stated that the firm delivered quality services, aligning with their values and expectations. Overall, clients appreciate the balance of cost and the expertise provided, although suggestions for improved documentation were noted.
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  • PROTEUS-DT Logotype

    Not yet reviewed

    $50,000+
    $100 - $149 / hr
    10 - 49
    Singapore, Singapore

    Services provided

    25% Web Development
    35% Custom Software Development
    10% AI Development +3
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    30% JavaScript
    30% Go
    20% Typescript +2
    10% HTML5
    10% Python

    PROTEUS-DT is a custom software development company. In Singapore, Singapore and Kuala Lumpur, Malaysia, the firm specializes in Custom Software Development and Web Development.

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  • Trade EC Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    50 - 249
    Quito, Ecuador

    Services provided

    20% Web Development
    20% AI Development
    20% Application Testing +2
    20% E-Commerce Development
    20% Mobile App Development

    Focus Areas

    50% JavaScript
    30% Kotlin
    20% Python

    Trade EC, a website development firm, was founded in 2006. They offers Web Development and Mobile App Development.

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  • CodeAroma Technologies Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9
    Ahmedabad, India

    Services provided

    40% Web Development
    20% E-Commerce Development
    10% Custom Software Development +3
    10% Low/No Code Development
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    50% JavaScript
    50% PHP

    Web development company CodeAroma Technologies is headquartered in Ahmedabad, India. They provide Web Development and Custom Software Development.

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  • Waterwhip Labs Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    2 - 9
    London, England

    Services provided

    50% Web Development
    20% Blockchain
    15% Custom Software Development +2
    10% Low/No Code Development
    5% Search Engine Optimization

    Focus Areas

    85% JavaScript
    15% Redux

    Waterwhip Labs is a web development firm. The team offers Web Development and Custom Software Development, and the company is in London, England.

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  • CREO Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    10 - 49
    Cardiff , Wales

    Services provided

    20% Web Development
    30% Branding
    20% Digital Strategy +2
    20% Web Design
    10% Search Engine Optimization

    Focus Areas

    20% JavaScript
    70% PHP
    10% ColdFusion

    CREO, a small branding company, is in Cardiff , Wales. The team specializes in Branding and Digital Strategy.

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  • CodeTez Technologies Private Limited Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Chennai, India

    Services provided

    35% Web Development
    50% Mobile App Development
    15% UX/UI Design

    Focus Areas

    30% JavaScript
    35% PHP
    15% Typescript +2
    10% HTML5
    10% Redux

    CodeTez Technologies Private Limited, a mobile app development company, is located in Chennai, India. Founded in 2018, the team offers Mobile App Development and Web Development.

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  • Dirayaah Smart Technologies Logotype

    Not yet reviewed

    $5,000+
    Undisclosed
    50 - 249
    Dhahran, Saudi Arabia

    Services provided

    15% Web Development
    15% Custom Software Development
    10% Mobile App Development +12
    5% Branding
    5% Business Consulting
    5% Cloud Consulting & SI
    5% E-Commerce Development
    5% IT Managed Services
    5% IT Strategy Consulting
    5% Marketing Strategy
    5% Mobile & App Marketing
    5% Product Design
    5% Product Marketing
    5% Search Engine Optimization
    5% UX/UI Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% Kotlin +11
    10% PHP
    10% SQL
    10% Visual Basic
    5% ASP
    5% ASP.NET
    5% C#
    5% C++
    5% Java
    5% Python
    5% Redux
    5% Ruby

    Established in 1998, Dirayaah Smart Technologies is a software development firm. Their services include Custom Software Development and Web Development.

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  • HenceForth Solutions Pvt Ltd Logotype

    HenceForth Solutions Pvt Ltd

    4.8 2 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249

    Services provided

    20% Web Development
    30% Mobile App Development
    20% AI Development +3
    10% Blockchain
    10% Custom Software Development
    10% IoT Development

    Focus Areas

    40% JavaScript
    30% Typescript
    10% Other programming & scripting languages +3
    10% Python
    5% HTML5
    5% PHP

    HenceForth Solutions Pvt Ltd offers mobile app development, web development, NFT marketplace development, blockchain development, AI development, and IoT solutions. The overall feedback highlights the team's knowledge, timely delivery, and effective project management. Clients appreciate their responsiveness and direct communication with the team, though some note room for improvement in documentation.

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  • Ramam Tech Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    50 - 249
    Sahibzada Ajit Singh Nagar, India

    Services provided

    10% Web Development
    60% Robotics Process Automation
    15% AI Development +3
    5% Generative AI
    5% Low/No Code Development
    5% Mobile & App Marketing

    Focus Areas

    50% JavaScript
    50% HTML5

    Robotics Process Automation company Ramam Tech is headquartered in Sheridan, Wyoming and Sahibzada Ajit Singh Nagar, India. They specialize in Robotics Process Automation and Artificial

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  • OneLeap Solutions Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Mumbai, India

    Services provided

    25% Web Development
    20% Custom Software Development
    20% Mobile App Development +3
    15% IT Strategy Consulting
    10% AI Consulting
    10% AI Development

    Focus Areas

    30% JavaScript
    40% PHP
    20% Typescript +1
    10% SQL

    OneLeap Solutions is a web development company. They were established in 2013, and their services include Web Development and Custom Software Development.

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  • Stellar Agency Logotype

    Stellar Agency

    5.0 1 review
    $1,000+
    $25 - $49 / hr
    2 - 9

    Services provided

    45% Web Development
    15% UX/UI Design
    10% Low/No Code Development +3
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    35% JavaScript
    35% HTML5
    25% PHP +1
    5% Typescript

    Stellar Agency specializes in Website Development and Web Design, focusing on creating effective multi-page sites for businesses, such as in the landscape design niche. Reviews highlight their excellent project management, ability to adjust to project requirements, and effective communication, leading to successful outcomes like increased client applications and functional sites. Their services are praised for offering great value and fitting within budget constraints.

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  • Renav Technologies Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    10 - 49
    Harrow, England

    Services provided

    10% Web Development
    25% E-Commerce Development
    20% IT Managed Services +5
    10% AR/VR Development
    10% ERP Consulting and SI
    10% Mobile App Development
    10% Web Design
    5% Custom Software Development

    Focus Areas

    22% JavaScript
    33% PHP
    12% Kotlin +3
    11% ASP
    11% HTML5
    11% Objective C

    Founded in 2018, Renav Technologies is an e-commerce development company. Their team offers E-Commerce Development and IT managed services.

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  • PIT SOLUTIONS Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    250 - 999
    Thiruvananthapuram, India

    Services provided

    30% Web Development
    30% Custom Software Development
    20% Mobile App Development +2
    10% AI Development
    10% E-Commerce Development

    Focus Areas

    10% JavaScript
    20% ASP.NET
    20% PHP +5
    15% SQL
    10% Java
    10% Python
    10% Ruby
    5% AJAX

    Software development firm PIT SOLUTIONS was established in 2000. The midsize team focuses on Custom Software Development and Web Development.

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  • Ghostwriting Professionals Logotype

    Ghostwriting Professionals

    4.3 7 reviews
    $50,000+
    $100 - $149 / hr
    50 - 249

    Services provided

    10% Web Development
    30% Content Marketing
    20% Logo +3
    20% Web Design
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    10% JavaScript
    10% AJAX
    10% Ember.js +7
    10% Java
    10% Objective C
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% Redux
    10% Swift

    Ghostwriting Professionals offer ghostwriting, book marketing, and content solutions. Their reviews reveal mixed feedback: one client expressed dissatisfaction due to unfulfilled promises and contract breaches, while another praised their dedication and quality content output. Approximately 50% of reviews mention unmet expectations, whereas the other 50% highlight timely delivery and creativity.

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    Reviews mention Great project management

    The feedback from Mathieson Dunston, project manager at All Valley Escrow, highlights the exceptional project management skills of Ghostwriting Professionals. He noted that the collaboration was seamless, with the team delivering quality content on time, alleviating his stress during a challenging phase. Dunston emphasized their dedication and effective workflow, stating that the efforts from both teams were visibly impactful, resulting in a successful project outcome without any need for improvement.
    • Content Marketing for Real Estate Company
      4.5 Nov 29, 2022

      The most stressful phase of this project was getting the right content for our web pages, but working with creative individuals from Ghost Writing Professionals made this task look like a no-brainer; they were on time and ensured me quality output. And they did it, all my stress was gone, and I was happy with the results. Overall, it was a nice experience as both teams collaborated to produce the best they could think of; their efforts were visible to my eyes.

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    Industry Experience

    Ghostwriting Professionals has garnered mixed feedback across various industries. In the consulting sector, clients reported dissatisfaction with the quality and delivery of ghostwriting, editing, and marketing services, highlighting significant issues with professionalism and follow-through. Conversely, in the real estate industry, feedback was notably positive, with clients appreciating timely and quality content creation for web projects. Overall, potential clients in real estate may find this provider a better fit, while those in consulting should exercise caution.

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    Consulting Real estate

    Average Project Cost Breakdown

    $10,000 to $49,000 (2)

    What Clients Have Said

    Client feedback on Ghostwriting Professionals reflects a mixed sentiment regarding cost and value for money. While one client appreciated the company's pricing as fitting their budget, others expressed dissatisfaction, citing unmet promises and a lack of delivered services. For instance, a client reported having to write their own books after a year of failed collaboration, highlighting concerns over the company's follow-through and overall value. Conversely, another client praised the timely and quality content delivery, indicating some positive experiences in terms of value.
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  • Forenax Technologies Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Lahore, Pakistan

    Services provided

    20% Web Development
    20% Blockchain
    20% Cloud Consulting & SI +3
    20% E-Commerce Development
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    40% JavaScript
    40% Typescript
    20% SQL

    Forenax Technologies is a cloud consulting & SI company. They were founded in 2019 and focus on cloud consulting & SI and Custom Software Development.

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  • ORA Logotype

    5.0 7 reviews
    $25,000+
    $100 - $149 / hr
    10 - 49
    Chicago, IL

    Services provided

    15% Web Development
    15% Mobile App Development
    10% Branding +6
    10% Digital Strategy
    10% Marketing Strategy
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    20% PHP
    10% ASP.NET +7
    10% C#
    10% C++
    10% Java
    5% Objective C
    5% Ruby
    5% SQL
    5% Swift

    ORA is an award-winning user experience and digital product studio with a combined portfolio of over 300 native mobile app, web app and internet-of-things products. For almost a decade ORA has been

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  • CloudeDesign(Pvt)Ltd Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Colombo, Sri Lanka

    Services provided

    50% Web Development
    45% Web Design
    5% Social Media Marketing

    Focus Areas

    50% JavaScript
    50% Typescript

    Web development firm CloudeDesign(Pvt)Ltd is headquartered in Colombo, Sri Lanka. Launched in 2017, the team specializes in Web Development and Web Design.

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  • CodeCraft Technologies Pvt Ltd Logotype

    Not yet reviewed

    $25,000+
    $25 - $49 / hr
    50 - 249
    Mangaluru, India

    Services provided

    35% Web Development
    35% Mobile App Development
    25% UX/UI Design +1
    5% Application Testing

    Focus Areas

    30% JavaScript
    20% Kotlin
    20% Swift +4
    10% Redux
    10% XML
    5% C#
    5% Java

    CodeCraft Technologies Pvt Ltd, a website development company, was launched in 2011. In Mangaluru, India and Bengaluru, India, the team provides Web Development and Mobile App Development.

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  • Oxford Computer Consultants Ltd Logotype

    Not yet reviewed

    $25,000+
    $100 - $149 / hr
    50 - 249
    Oxford, England

    Services provided

    25% Web Development
    50% Custom Software Development
    25% Mobile App Development

    Focus Areas

    40% JavaScript
    60% C#

    Oxford Computer Consultants Ltd, a custom software development company, was established in 1989. The firm offers Custom Software Development and Mobile App Development, and is midsize.

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  • PixelTime Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9
    Johannesburg South, South Africa

    Services provided

    50% Web Development
    50% Web Design

    Focus Areas

    50% JavaScript
    50% Other programming & scripting languages

    PixelTime is a web design agency and web development firm. The agency is located in Johannesburg South, South Africa. Their services include Web Design and Web Development.

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  • amarwebs Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9
    ঢাকা, Bangladesh

    Services provided

    50% Web Development
    50% Web Design

    Focus Areas

    50% JavaScript
    50% PHP

    Amarwebs is a web design agency and web development company. Founded in 2016, the team focuses on Web Design and Web Development.

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  • Combinate Logotype

    Not yet reviewed

    $1,000+
    $150 - $199 / hr
    10 - 49
    South Yarra, Australia

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Web Design +4
    15% Branding
    15% UX/UI Design
    5% E-Commerce Development
    5% Mobile App Development

    Focus Areas

    50% JavaScript
    30% Ruby
    20% Python

    Custom software development company Combinate is located in South Yarra, Australia. The team focuses on Custom Software Development and Web Development.

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  • Blue Horn Technologies Logotype

    Blue Horn Technologies

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    10% Web Development
    20% Mobile App Development
    10% Custom Software Development +7
    10% E-Commerce Development
    10% Low/No Code Development
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    5% Cybersecurity
    5% Pay Per Click

    Focus Areas

    20% JavaScript
    40% PHP
    20% AJAX +1
    20% SQL

    Launched in 2005, Blue Horn Technologies is a mobile app development company. The agency specializes in Mobile App Development and Social Media Marketing.

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  • Foefox Design Studio Logotype

    Foefox Design Studio

    5.0 1 review
    $1,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    40% Web Development
    30% Mobile App Development
    10% Custom Software Development +2
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    60% JavaScript
    40% PHP

    Foefox Design Studio specializes in custom software development and IoT configuration, offering cost-effective solutions tailored to client needs. Reviews highlight their timely project delivery, effective project management, and robust infrastructure, with commendations for their quick product updates and clean user interface. Minor initial confusion on last-minute additions was resolved without significant concerns.

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  • Blockchain Simplified | CakeSoft Technologies Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    50 - 249
    Pune, India

    Services provided

    25% Web Development
    50% Blockchain
    25% Mobile App Development

    Focus Areas

    40% JavaScript
    10% Kotlin
    10% PHP +5
    10% Redux
    10% SQL
    10% Swift
    5% Objective C
    5% Other programming & scripting languages

    Established in 2014, Blockchain Simplified | CakeSoft Technologies, a midsize Blockchain company, is in Pune, India. Their team specializes in Blockchain and Mobile App Development.

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  • No Heroes Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    2 - 9
    Amsterdam, Netherlands

    Services provided

    50% Web Development
    30% Web Design
    10% Application Testing +1
    10% UX/UI Design

    Focus Areas

    25% JavaScript
    50% Typescript
    10% Python +2
    10% Redux
    5% SQL

    No Heroes is a small web development firm located in Amsterdam, Netherlands. The team specializes in Web Development and Web Design.

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  • ReacTree Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Karachi, Pakistan

    Services provided

    15% Web Development
    25% Mobile App Development
    15% Custom Software Development +6
    10% API Development
    10% Application Management & Support
    10% Low/No Code Development
    5% Application Testing
    5% E-Commerce Development
    5% Enterprise App Modernization

    Focus Areas

    25% JavaScript
    25% Kotlin
    25% Python +1
    25% Swift

    Custom software development firm ReacTree was established in 2018. The small team offers Custom Software Development and Mobile App Development.

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  • EEMAGINE WORKS D.O.O. Logotype

    5.0 1 review
    $1,000+
    $25 - $49 / hr
    2 - 9
    Novi Sad, Serbia

    Services provided

    30% Web Development
    30% E-Commerce Development
    20% Custom Software Development +1
    20% Mobile App Development

    Focus Areas

    30% JavaScript
    60% PHP
    10% Typescript

    EEMAGINE WORKS D.O.O. offers web development services, specializing in custom web stores tailored to client specifications. The overall feedback highlights their exceptional communication, timely delivery, and the high quality of their code. Clients appreciated the ease of interaction and the tangible improvements in web store performance.

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  • IOT WEB LAB, LLC Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    1,000 - 9,999
    Kyiv, Ukraine

    Services provided

    20% Web Development
    20% Mobile App Development
    19% Blockchain +3
    15% IoT Development
    14% E-Commerce Development
    12% AR/VR Development

    Focus Areas

    20% JavaScript
    20% Java
    15% PHP +4
    15% Python
    15% Ruby
    10% C++
    5% Other programming & scripting languages

    Launched in 2019, IOT WEB LAB, LLC is an application development company. The team specializes in Mobile App Development and Web Development and is in Kyiv, Ukraine and Dnipropetrovs'k, Ukraine.

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  • ABN Asia Software Logotype

    ABN Asia Software

    Not yet reviewed

    $1,000+
    < $25 / hr
    50 - 249

    Services provided

    35% Web Development
    25% Mobile App Development
    15% Custom Software Development +3
    10% AR/VR Development
    10% Low/No Code Development
    5% AI Development

    Focus Areas

    37% JavaScript
    21% PHP
    21% Python +2
    11% HTML5
    10% SQL

    ABN Asia Software is a web development company. Based in Hanoi, Vietnam and Hanoi, Vietnam, the firm was founded in 2012. Their team offers Web Development and Custom Software Development.

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  • Blockbit.es Logotype

    Blockbit.es

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    10 - 49

    Services provided

    20% Web Development
    65% Blockchain
    10% AR/VR Development +1
    5% Application Management & Support

    Focus Areas

    18% JavaScript
    18% Redux
    18% Typescript +4
    12% Objective C
    12% Rust
    12% Swift
    10% HTML5

    Blockchain company Blockbit.es is headquartered in Poznań, Poland. They provide Blockchain and Web Development and were established in 2020.

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  • Codemate Logotype

    Not yet reviewed

    $25,000+
    $100 - $149 / hr
    50 - 249
    Helsinki, Finland

    Services provided

    50% Web Development
    20% Mobile App Development
    10% AI Development +2
    10% Cloud Consulting & SI
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    50% Typescript
    10% Other programming & scripting languages +4
    10% Python
    10% Ruby
    5% Go
    5% SQL

    Codemate is a website development company. Based in Helsinki, Finland and Oulu, Finland, their team provides Web Development and Mobile App Development.

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  • Hive Ive Solutions Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    10 - 49
    Amsterdam, Netherlands

    Services provided

    15% Web Development
    55% Blockchain
    10% Custom Software Development +2
    10% Low/No Code Development
    10% Other Application Development

    Focus Areas

    25% JavaScript
    25% Other programming & scripting languages
    20% C# +2
    20% Java
    10% C++

    Hive Ive Solutions, a Blockchain company, was established in 2021. Located in Amsterdam, Netherlands and Rijen, Netherlands, the team focuses on Blockchain and Custom Software Development.

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  • Dat-studio Logotype

    Dat-studio

    5.0 1 review
    Undisclosed
    $25 - $49 / hr
    10 - 49

    Services provided

    20% Web Development
    20% Mobile App Development
    15% Web Design +5
    10% AR/VR Development
    10% Low/No Code Development
    10% Search Engine Optimization
    10% Social Media Marketing
    5% CRM Consulting and SI

    Focus Areas

    15% JavaScript
    51% PHP
    10% HTML5 +7
    10% Python
    5% Java
    5% Typescript
    1% AJAX
    1% C++
    1% SQL
    1% jquery

    Dat-studio is a web development company specializing in website development, web design, and application development. With 100% positive feedback, clients commend their creative flair, technical expertise, and user-centered design approach. Reviewers frequently highlight their effective project management, timely delivery, and responsive communication. However, some suggest enhancements in communication and testing phases.

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  • SilverStripe Logotype

    Not yet reviewed

    $25,000+
    $100 - $149 / hr
    50 - 249
    Wellington, New Zealand

    Services provided

    60% Web Development
    30% Web Design
    10% Digital Strategy

    Focus Areas

    40% JavaScript
    60% PHP

    SilverStripe is a midsize web development firm in Wellington, New Zealand and Auckland, New Zealand. Their services include Web Development and Web Design.

    Read more
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  • Black & Black Creative Logotype

    Not yet reviewed

    $25,000+
    $150 - $199 / hr
    10 - 49
    New York, NY

    Services provided

    10% Web Development
    40% E-Commerce Development
    30% UX/UI Design +2
    10% Branding
    10% Digital Strategy

    Focus Areas

    30% JavaScript
    30% PHP
    10% AJAX +3
    10% Java
    10% Ruby
    10% SQL

    E-commerce development company Black & Black Creative is headquartered in New York, New York and Edinburgh, Scotland. The team offers E-Commerce Development and UX/UI Design.

    Read more
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We evaluate service providers using a structured methodology that combines:

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This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.

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Ability to deliver
Focus
Clutch Leaders Matrix

Rollover to see company insights or click a company below for more details.

1 ImageX
2 xfive
3 GeekyAnts
4 Flowout
5 Brainhub
6 The Software House
7 PowerGate Software
8 HTMLPanda
9 FocusReactive
10 Arcanys
11 WPWeb Infotech
12 Softonix
13 PopArt Studio
14 Lizard Global
15 Experion Technologies

List of the Top 15 JavaScript Development Companies

  1. ImageX Logotype

    ImageX

    $75,000+
    $100 - $149 / hr
    50 - 249
    Vancouver, Canada

    Ability to deliver

    38.7/40.0
    20/20 Reviews
    10/10 Clients & Experience
    8.7/10 Market Presence

    Service focus

    90% Web Development
    50% JavaScript
    10% Other
    View Profile Visit Website
  2. xfive Logotype

    xfive

    $25,000+
    $50 - $99 / hr
    50 - 249
    Kraków, Poland

    Ability to deliver

    35.7/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    6.9/10 Market Presence

    Service focus

    60% Web Development
    50% JavaScript
    40% Other
    View Profile Visit Website
  3. GeekyAnts Logotype

    GeekyAnts

    $10,000+
    $25 - $49 / hr
    250 - 999
    Bengaluru, India

    Ability to deliver

    37.2/40.0
    20/20 Reviews
    10/10 Clients & Experience
    7.2/10 Market Presence

    Service focus

    20% Web Development
    40% JavaScript
    80% Other
    View Profile Visit Website
  4. Flowout Logotype

    Flowout

    $5,000+
    $50 - $99 / hr
    50 - 249
    Maribor, Slovenia

    Ability to deliver

    35.1/40.0
    20/20 Reviews
    10/10 Clients & Experience
    5.1/10 Market Presence

    Service focus

    40% Web Development
    100% JavaScript
    60% Other
    View Profile Visit Website
  5. Brainhub Logotype

    Brainhub

    $50,000+
    $50 - $99 / hr
    50 - 249
    Gliwice, Poland

    Ability to deliver

    34.1/40.0
    18.4/20 Reviews
    10/10 Clients & Experience
    5.7/10 Market Presence

    Service focus

    45% Web Development
    75% JavaScript
    55% Other
    View Profile Visit Website
  6. The Software House Logotype

    The Software House

    $25,000+
    $50 - $99 / hr
    50 - 249
    Gliwice, Poland

    Ability to deliver

    34.5/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    5.7/10 Market Presence

    Service focus

    40% Web Development
    60% JavaScript
    60% Other
    View Profile Visit Website
  7. PowerGate Software Logotype

    PowerGate Software

    $10,000+
    < $25 / hr
    250 - 999
    Hanoi, Vietnam

    Ability to deliver

    35.9/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    7.1/10 Market Presence

    Service focus

    30% Web Development
    21% JavaScript
    70% Other
    View Profile Visit Website
  8. HTMLPanda Logotype

    HTMLPanda

    $1,000+
    < $25 / hr
    250 - 999
    Walpole, MA

    Ability to deliver

    32.8/40.0
    16.2/20 Reviews
    10/10 Clients & Experience
    6.6/10 Market Presence

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  9. FocusReactive Logotype

    FocusReactive

    $10,000+
    $50 - $99 / hr
    10 - 49
    London, England

    Ability to deliver

    34.8/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    6.2/10 Market Presence

    Service focus

    50% Web Development
    90% JavaScript
    50% Other
    View Profile Visit Website
  10. Arcanys Logotype

    Arcanys

    $100,000+
    $25 - $49 / hr
    250 - 999
    Cebu City, Philippines

    Ability to deliver

    35.6/40.0
    20/20 Reviews
    10/10 Clients & Experience
    5.6/10 Market Presence

    Service focus

    30% Web Development
    20% JavaScript
    70% Other
    View Profile Visit Website
  11. WPWeb Infotech Logotype

    WPWeb Infotech

    $25,000+
    < $25 / hr
    250 - 999
    Ahmedabad, India

    Ability to deliver

    37/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    7.4/10 Market Presence

    Service focus

    45% Web Development
    10% JavaScript
    55% Other
    View Profile Visit Website
  12. Softonix Logotype

    Softonix

    $5,000+
    $25 - $49 / hr
    50 - 249
    Warszawa, Poland

    Ability to deliver

    32.3/40.0
    17.2/20 Reviews
    10/10 Clients & Experience
    5.1/10 Market Presence

    Service focus

    70% Web Development
    50% JavaScript
    30% Other
    View Profile Visit Website
  13. PopArt Studio Logotype

    PopArt Studio

    $5,000+
    $50 - $99 / hr
    50 - 249
    Chicago, IL

    Ability to deliver

    35.6/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    6/10 Market Presence

    Service focus

    35% Web Development
    40% JavaScript
    65% Other
    View Profile Visit Website
  14. Lizard Global Logotype

    Lizard Global

    $10,000+
    $50 - $99 / hr
    50 - 249
    Amsterdam, Netherlands

    Ability to deliver

    34.9/40.0
    19.8/20 Reviews
    10/10 Clients & Experience
    5.1/10 Market Presence

    Service focus

    30% Web Development
    70% JavaScript
    70% Other
    View Profile Visit Website
  15. Experion Technologies Logotype

    Experion Technologies

    $10,000+
    $25 - $49 / hr
    1,000 - 9,999
    Plano, TX

    Ability to deliver

    33.6/40.0
    16.8/20 Reviews
    10/10 Clients & Experience
    6.8/10 Market Presence

    Service focus

    20% Web Development
    25% JavaScript
    80% Other
    View Profile Visit Website
  16. INOXOFT Logotype

    INOXOFT

    $25,000+
    $25 - $49 / hr
    50 - 249
    Newark, DE

    Ability to deliver

    35.5/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    6.7/10 Market Presence

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  17. Cleveroad Logotype

    Cleveroad

    $10,000+
    $25 - $49 / hr
    250 - 999
    New York, NY

    Ability to deliver

    36.2/40.0
    20/20 Reviews
    10/10 Clients & Experience
    6.2/10 Market Presence

    Service focus

    30% Web Development
    15% JavaScript
    70% Other
    View Profile Visit Website
  18. Povio Logotype

    Povio

    $10,000+
    $50 - $99 / hr
    50 - 249
    San Francisco, CA

    Ability to deliver

    32.6/40.0
    18.8/20 Reviews
    8.3/10 Clients & Experience
    5.5/10 Market Presence

    Service focus

    55% Web Development
    45% JavaScript
    45% Other
    View Profile Visit Website
  19. Sigma Software Group Logotype

    Sigma Software Group

    $50,000+
    $50 - $99 / hr
    1,000 - 9,999
    L'viv, Ukraine

    Ability to deliver

    36.3/40.0
    17.6/20 Reviews
    10/10 Clients & Experience
    8.8/10 Market Presence

    Service focus

    15% Web Development
    18% JavaScript
    85% Other
    View Profile Visit Website
  20. Xmartlabs Logotype

    Xmartlabs

    $10,000+
    $50 - $99 / hr
    50 - 249
    Montevideo, Uruguay

    Ability to deliver

    33.8/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    5.2/10 Market Presence

    Service focus

    50% Web Development
    35% JavaScript
    50% Other
    View Profile Visit Website
  21. Incora Logotype

    Incora

    $25,000+
    $25 - $49 / hr
    50 - 249
    L'viv, Ukraine

    Ability to deliver

    33.1/40.0
    17.8/20 Reviews
    10/10 Clients & Experience
    5.3/10 Market Presence

    Service focus

    40% Web Development
    50% JavaScript
    60% Other
    View Profile Visit Website
  23. Adchitects Logotype

    Adchitects

    $25,000+
    $50 - $99 / hr
    10 - 49
    Poznań, Poland

    Ability to deliver

    33.8/40.0
    17/20 Reviews
    10/10 Clients & Experience
    6.8/10 Market Presence

    Service focus

    50% Web Development
    60% JavaScript
    50% Other
    View Profile Visit Website
  24. Techuz InfoWeb Pvt. Ltd. Logotype

    Techuz InfoWeb Pvt. Ltd.

    $5,000+
    < $25 / hr
    50 - 249
    Ahmedabad, India

    Ability to deliver

    31.9/40.0
    16.4/20 Reviews
    10/10 Clients & Experience
    5.5/10 Market Presence

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  25. SpdLoad Logotype

    SpdLoad

    $50,000+
    $25 - $49 / hr
    50 - 249
    Kharkiv, Ukraine

    Ability to deliver

    31.9/40.0
    16.2/20 Reviews
    10/10 Clients & Experience
    5.7/10 Market Presence

    Service focus

    45% Web Development
    50% JavaScript
    55% Other
    View Profile Visit Website
  26. XWP Logotype

    XWP

    $50,000+
    $150 - $199 / hr
    50 - 249
    New York, NY

    Ability to deliver

    31.9/40.0
    15.8/20 Reviews
    10/10 Clients & Experience
    6.1/10 Market Presence

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  27. Toptal Logotype

    Toptal

    $50,000+
    $100 - $149 / hr
    1,000 - 9,999
    San Francisco, CA

    Ability to deliver

    33.9/40.0
    17.2/20 Reviews
    9.9/10 Clients & Experience
    6.8/10 Market Presence

    Service focus

    15% Web Development
    25% JavaScript
    85% Other
    View Profile Visit Website
  28. Konstant Infosolutions Logotype

    Konstant Infosolutions

    $5,000+
    $25 - $49 / hr
    250 - 999
    Jaipur, India

    Ability to deliver

    37.4/40.0
    20/20 Reviews
    10/10 Clients & Experience
    7.4/10 Market Presence

    Service focus

    10% Web Development
    25% JavaScript
    90% Other
    View Profile Visit Website
  29. Vardot Logotype

    Vardot

    $25,000+
    $100 - $149 / hr
    50 - 249
    Santa Clara, CA

    Ability to deliver

    35.1/40.0
    17.8/20 Reviews
    10/10 Clients & Experience
    7.3/10 Market Presence

    Service focus

    60% Web Development
    20% JavaScript
    40% Other
    View Profile Visit Website
  30. unicrew Logotype

    unicrew

    $10,000+
    $25 - $49 / hr
    50 - 249
    Kraków, Poland

    Ability to deliver

    33.7/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    5/10 Market Presence

    Service focus

    30% Web Development
    50% JavaScript
    70% Other
    View Profile Visit Website

Top JavaScript Development Agencies

A JavaScript development company designs, builds, and maintains software products that rely on JavaScript across the stack. Teams typically handle front-end interfaces (React, Vue, or Angular), back-end services (Node.js, Express, NestJS), and database integrations. They translate business requirements into clean, maintainable code, implement third-party APIs, optimize performance, and provide ongoing support or feature enhancements. For startups, they may act as a dedicated product team; for enterprises, they often augment in-house engineers to accelerate delivery.

Most agencies bundle multiple offerings so clients can access full product life-cycle support:

  • Discovery workshops & technical consulting
  • UI/UX design and prototyping
  • Front-end SPA or PWA development
  • Server-side development with Node.js or Deno
  • API design, GraphQL, and microservices architecture
  • QA automation & performance testing
  • DevOps, CI/CD, and cloud deployment (AWS, Azure, GCP)
  • Post-launch maintenance and feature sprints

Some firms specialize in niches such as ecommerce storefronts, real-time dashboards, or IoT applications built with JavaScript frameworks like Next.js or Svelte.

Clutch data shows project budgets range widely:

  • MVP or small web app - $15,000–$50,000
  • Mid-size product build - $50,000–$200,000
  • Enterprise-grade platform - $200,000–$1M+ | Hourly rates usually fall between $50–$149 depending on agency location, seniority, and specialization. Expect higher rates for U.S.-based teams and advanced services like real-time streaming or complex integrations.

  • Align expertise: Verify experience with your required stack (e.g., React Native, TypeScript, serverless).
  • Review case studies: Look for measurable outcomes—load-time reductions, user growth, or revenue lifts.
  • Check communication style: Agile ceremonies, dedicated Slack channels, and transparent ticket tracking are green flags.
  • Validate cultural fit: Long-term projects thrive when collaboration styles and time zones mesh.
  • Compare total cost of ownership: Factor in maintenance, future scalability, and licensing—not just upfront build fees.

Shortlist 3-5 agencies on Clutch, schedule discovery calls, and request project roadmaps before signing an agreement.

  • Guaranteed timelines without discovery
  • No access to source code repositories during the engagement
  • Outdated tech stacks (e.g., jQuery-only solutions for modern SPAs)
  • Low developer retention or high turnover
  • Vague pricing models or hidden fees

If an agency dismisses code reviews, ignores testing, or refuses to provide client references, proceed with caution

  • Which JavaScript frameworks do you specialize in, and why?
  • Can you walk me through a recent project with similar complexity?
  • How do you ensure code quality—linting, peer reviews, automated tests?
  • What is your approach to scalability and performance optimization?
  • How will we communicate and track progress (tools, meeting cadence)?
  • Who owns the intellectual property and source code upon project completion?

Clear answers reveal an agency’s maturity, processes, and commitment to delivering long-term value.

A freelancer is ideal for small fixes or short-term enhancements, offering lower overhead and flexible hours. Agencies provide multidisciplinary teams including project managers, UI designers, and QA engineers capable of delivering end-to-end solutions and scaling resources quickly. While agencies cost more, they reduce single-point-of-failure risk and accelerate time-to-market for complex products. How do JavaScript firms measure ROI? Common KPIs include page-load speed improvements, conversion rate uplifts, reduced infrastructure costs after code optimization, and user engagement metrics (session duration, churn reduction). Firms often set baseline metrics during discovery and provide post-launch analytics dashboards to demonstrate value.

Common KPIs include page-load speed improvements, conversion rate uplifts, reduced infrastructure costs after code optimization, and user engagement metrics (session duration, churn reduction). Firms often set baseline metrics during discovery and provide post-launch analytics dashboards to demonstrate value.

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