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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 20, 2026
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22,371 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Design Dream Logotype

    Design Dream

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Mobile App Development
    10% Packaging Design +8
    10% Product Design
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Video Production
    10% Web Design
    5% Graphic Design
    5% Logo

    Focus Areas

    18% JavaScript
    18% Java
    18% Redux +3
    18% Swift
    16% Kotlin
    12% Other programming & scripting languages

    Design Dream is a social media marketing firm located in Jaipur, India. Their services include Social Media Marketing and Search Engine Optimization.

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  • GS Studio Logotype

    GS Studio

    Not yet reviewed

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

    Services provided

    10% Web Development
    40% Mobile App Development
    20% AR/VR Development +2
    20% Graphic Design
    10% UX/UI Design

    Focus Areas

    14% JavaScript
    16% SQL
    14% C# +4
    14% Java
    14% Objective C
    14% PHP
    14% Swift

    GS Studio is a small mobile app development firm established in 2010. Their team focuses on Mobile App Development and AR/VR development.

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  • Krish Apps Lab Pvt. Ltd. Logotype

    Krish Apps Lab Pvt. Ltd.

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    50 - 249

    Services provided

    10% Web Development
    50% Mobile App Development
    10% AR/VR Development +3
    10% Blockchain
    10% E-Commerce Development
    10% Enterprise App Modernization

    Focus Areas

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

    Krish Apps Lab Pvt. Ltd., a mobile application development firm, is in Faridabad, India. Their services include Mobile App Development and Enterprise App Modernization.

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  • Resilience IT Ltd Logotype

    Resilience IT Ltd

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Application Management & Support
    10% Application Testing +7
    10% BI & Big Data Consulting & SI
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% E-Commerce Development
    10% IT Staff Augmentation
    10% IoT Development
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    20% AJAX
    10% ASP.NET +6
    10% C
    10% C#
    10% C++
    10% Objective C
    10% SQL
    10% XML

    Software development firm Resilience IT Ltd is located in London, England and London, England. Launched in 2019, the team specializes in Custom Software Development and BI & big data consulting &

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  • Brave IT Consulting Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    50 - 249
    Sofia, Bulgaria

    Services provided

    10% Web Development
    10% Blockchain
    10% Business Consulting +8
    10% Custom Software Development
    10% E-Commerce Development
    10% Enterprise App Modernization
    10% IT Strategy Consulting
    10% Mobile App Development
    10% Other Application Development
    5% AI Development
    5% IoT Development

    Focus Areas

    10% JavaScript
    10% C#
    10% C++ +7
    10% Ember.js
    10% Java
    10% Python
    10% SQL
    10% Swift
    10% Visual Basic
    10% XML

    Brave IT Consulting is a midsize custom software development firm. Established in 2019, the team specializes in Custom Software Development and Enterprise App Modernization.

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  • Mahfuzul Islam Logotype

    Mahfuzul Islam

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    Freelancer

    Services provided

    20% Web Development
    30% Search Engine Optimization
    20% Social Media Marketing +3
    15% Public Relations
    10% Branding
    5% Media Planning & Buying

    Focus Areas

    20% JavaScript
    25% HTML5
    20% XML +3
    15% PHP
    10% C#
    10% jquery

    Founded in 2018, Mahfuzul Islam is a small Dhaka, Bangladesh-based SEO company. Their services include Search Engine Optimization and Social Media Marketing.

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  • Grow Tech Solution Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    50 - 249
    Long Beach, CA

    Services provided

    10% Web Development
    15% Mobile App Development
    10% Custom Software Development +8
    10% Low/No Code Development
    10% Mobile & App Marketing
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design
    5% Digital Strategy
    5% Graphic Design
    5% Logo

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP +7
    10% ASP.NET
    10% Apex
    10% HTML5
    10% Java
    10% Other programming & scripting languages
    10% PHP
    10% SQL

    Web design company Grow Tech Solution is in Long Beach, California. Established in 1994, the team focuses on Web Design and Web Development.

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  • VST Logotype

    Not yet reviewed

    $25,000+
    $100 - $149 / hr
    50 - 249
    New York, NY

    Services provided

    10% Web Development
    15% Custom Software Development
    10% Digital Strategy +10
    10% IT Managed Services
    10% Mobile App Development
    10% Other Digital Marketing
    5% BI & Big Data Consulting & SI
    5% Cloud Consulting & SI
    5% Cybersecurity
    5% ERP Consulting and SI
    5% IT Staff Augmentation
    5% IT Strategy Consulting
    5% UX/UI Design

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% C# +7
    10% Objective C
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% Redux
    10% SQL
    10% Swift

    In New York, New York and Houston, Texas, VST is a software development company. They focus on Custom Software Development and Digital Strategy and were established in 2001.

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  • CamelCoders Private Limited Logotype

    CamelCoders Private Limited

    Not yet reviewed

    Undisclosed
    $50 - $99 / hr
    50 - 249

    Services provided

    10% Web Development
    30% Social Media Marketing
    25% Search Engine Optimization +6
    10% Mobile App Development
    5% Content Marketing
    5% Conversion Optimization
    5% Email Marketing
    5% IT Managed Services
    5% Pay Per Click

    Focus Areas

    10% JavaScript
    20% PHP
    15% Java +5
    15% SQL
    15% XML
    10% Kotlin
    10% Python
    5% Other programming & scripting languages

    CamelCoders Private Limited is a social media marketing firm. They offer Social Media Marketing and Search Engine Optimization and are located in Los Angeles, California and Texas City, Texas.

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  • Lenna Price, LLC Logotype

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    Freelancer
    Hanover, MD

    Services provided

    30% Web Development
    50% Digital Strategy
    10% Low/No Code Development +1
    10% Search Engine Optimization

    Focus Areas

    10% JavaScript
    25% PHP
    25% Python +2
    25% SQL
    15% Other programming & scripting languages

    Lenna Price, LLC is a Digital Strategy company. Headquartered in Hanover, Maryland, their team provides Digital Strategy and Web Development.

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  • Wspl Hosting Solution (OPC) Private Limited Logotype

    Not yet reviewed

    Undisclosed
    $50 - $99 / hr
    50 - 249
    Kozhikkalnatham, India

    Services provided

    10% Web Development
    20% Mobile App Development
    15% E-Commerce Development +7
    15% Low/No Code Development
    10% Custom Software Development
    10% Video Production
    5% Advertising
    5% Branding
    5% Search Engine Optimization
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    10% AJAX
    10% Kotlin +7
    10% Objective C
    10% Other programming & scripting languages
    10% PHP
    10% SQL
    10% Swift
    10% Visual Basic
    10% XML

    Wspl Hosting Solution (OPC) Private Limited is a web development firm. The team is located in Kozhikkalnatham, India, and their services include Web Development and Mobile App Development.

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  • HolMiKi Kft Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    Freelancer
    Kaposvár, Hungary

    Services provided

    20% Web Development
    20% E-Commerce Development
    15% Custom Software Development +5
    15% Enterprise App Modernization
    15% Search Engine Optimization
    5% Other Application Development
    5% UX/UI Design
    5% Web Design

    Focus Areas

    20% JavaScript
    25% AJAX
    20% PHP +3
    20% SQL
    10% Kotlin
    5% XML

    HolMiKi Kft, a website development company, was launched in 2015. The small team offers Web Development and E-Commerce Development.

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  • Pozo Web Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    Freelancer
    Auckland, New Zealand

    Services provided

    30% Web Development
    30% Custom Software Development
    30% E-Commerce Development +1
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    80% PHP
    10% AJAX

    Pozo Web is a custom software development firm. They focus on Custom Software Development and Web Development and were established in 2016.

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  • Kodewoez Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% IT Staff Augmentation
    15% Low/No Code Development +15
    10% Custom Software Development
    10% Mobile App Development
    5% Application Testing
    5% Blockchain
    5% Content Marketing
    5% UX/UI Design
    2% AR/VR Development
    2% CRM Consulting and SI
    2% E-Commerce Development
    2% ERP Consulting and SI
    2% IT Managed Services
    2% IoT Development
    1% BI & Big Data Consulting & SI
    1% Robotics Process Automation
    1% Web Design

    Focus Areas

    10% JavaScript
    20% PHP
    20% Python +4
    20% Ruby
    10% Java
    10% Rust
    10% SQL

    IT staff augmentation company Kodewoez was established in 2023. The team offers IT staff augmentation and Custom Software Development.

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  • Loopera Technologies Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9
    Ahmedabad, India

    Services provided

    30% Web Development
    40% Custom Software Development
    20% Mobile App Development +1
    10% UX/UI Design

    Focus Areas

    20% JavaScript
    30% Python
    20% PHP +3
    15% SQL
    10% Typescript
    5% Ruby

    Loopera Technologies is a software development company. The Ahmedabad, India-based agency was established in 2025. Their team specializes in Custom Software Development and Web Development.

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  • SOFTWISE MECHATRONICS PVT. LTD. Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Engineering +2
    20% IoT Development
    20% Mobile App Development

    Focus Areas

    15% JavaScript
    40% C++
    15% Java +4
    10% Objective C
    10% Swift
    5% Kotlin
    5% Python

    Launched in 2021, SOFTWISE MECHATRONICS PVT. LTD. Is a custom software development company. In Pune, India, the team focuses on Custom Software Development and Web Development.

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  • Bromelia Logotype

    Bromelia

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9

    Services provided

    30% Web Development
    40% Mobile App Development
    30% AI Development

    Focus Areas

    20% JavaScript
    40% Swift
    20% SQL +1
    20% Typescript

    Bromelia, an application development firm, is headquartered in Wrocław, Poland. Launched in 2024, the team specializes in Mobile App Development and Web Development.

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    $6,000 Best for small business or startup $16,000 Best for growing businesess $28,000 Best for large companies and scalable projects

    Bromelia Web Development

    Need a website or web app that actually performs? We build fast, responsive, and reliable web solutions from landing pages to complex platforms.
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  • Apps Innovations Services Pvt. Ltd. Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49
    New Delhi, India

    Services provided

    10% Web Development
    40% Mobile App Development
    20% Search Engine Optimization +3
    10% Content Marketing
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    10% JavaScript
    50% Swift
    10% Java +3
    10% Objective C
    10% Other programming & scripting languages
    10% PHP

    Application development company Apps Innovations Services Pvt. Ltd. Was established in 2012. The firm specializes in Mobile App Development and Search Engine Optimization.

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  • Redback IT Solutions Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% E-Commerce Development
    15% Low/No Code Development +6
    15% Search Engine Optimization
    10% Digital Strategy
    10% Social Media Marketing
    10% Web Design
    5% Market Research
    5% Marketing Strategy

    Focus Areas

    10% JavaScript
    20% Java
    10% AJAX +7
    10% Objective C
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% SQL
    5% Ruby
    5% XML

    Redback IT Solutions is a web development company founded in 2010. The team focuses on Web Development and E-Commerce Development and is based in Vellore, India and Vellore, India.

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  • SeoEaze Logotype

    SeoEaze

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49

    Services provided

    10% Web Development
    50% Search Engine Optimization
    20% Content Marketing +2
    10% Pay Per Click
    10% Social Media Marketing

    Focus Areas

    10% JavaScript
    60% PHP
    20% AJAX +1
    10% ASP

    SeoEaze is a SEO company. The small Noida, India-based team specializes in Search Engine Optimization and Content Marketing. The company was founded in 2009.

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  • 360dgtl Logotype

    360dgtl

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    10 - 49

    Services provided

    10% Web Development
    10% E-Commerce Development
    10% Logo +7
    10% Mobile App Development
    10% Pay Per Click
    10% Print Design
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    50% PHP
    30% SQL +1
    10% AJAX

    360dgtl is an UX design agency. Located in Hyderabad, India, the firm was launched in 2015. Their services include UX/UI Design and E-Commerce Development.

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  • ArsenalTech Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Application Management & Support
    10% Application Testing +7
    10% Custom Software Development
    10% E-Commerce Development
    10% Enterprise App Modernization
    10% Mobile App Development
    10% Other Application Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    40% PHP
    20% ASP.NET +2
    20% C#
    10% Objective C

    ArsenalTech, a custom software development company, is in Ahmedabad, India. They provide Custom Software Development and Enterprise App Modernization and were founded in 2010.

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  • Achievers International Outsourcing Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49
    Ahmedabad, India

    Services provided

    10% Web Development
    10% E-Commerce Development
    10% Graphic Design +9
    10% Logo
    10% Mobile App Development
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design
    5% Content Marketing
    5% Email Marketing
    5% Mobile & App Marketing
    5% Pay Per Click

    Focus Areas

    10% JavaScript
    20% Java
    20% PHP +5
    10% AJAX
    10% ASP.NET
    10% C
    10% C#
    10% C++

    Achievers International Outsourcing is an e-commerce development company. Their small team is in Ahmedabad, India. Their services include E-Commerce Development and Graphic Design.

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  • Web Techno Experts Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% Digital Strategy +7
    10% Logo
    10% Mobile & App Marketing
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    10% JavaScript
    10% ASP
    10% ASP.NET +7
    10% C
    10% C#
    10% C++
    10% Java
    10% PHP
    10% Python
    10% XML

    Web Techno Experts is a small software development firm established in 1985. Their team focuses on Custom Software Development and Digital Strategy.

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  • Wildorb Interactive Design Studio Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Sofia, Bulgaria

    Services provided

    10% Web Development
    10% Application Testing
    10% Branding +7
    10% Custom Software Development
    10% E-Commerce Development
    10% Graphic Design
    10% IoT Development
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    20% PHP
    10% AJAX +6
    10% ASP.NET
    10% Java
    10% Python
    10% Ruby
    10% SQL
    10% XML

    Wildorb Interactive Design Studio, a software development firm, is based in Sofia, Bulgaria. They provide Custom Software Development and UX/UI Design.

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  • DIGITAL CONCEPTS Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Content Marketing
    10% Advertising +6
    10% Digital Strategy
    10% Graphic Design
    10% Marketing Strategy
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP +7
    10% ASP.NET
    10% Apex
    10% Java
    10% PHP
    10% Python
    10% SQL
    10% XML

    Headquartered in Kolkata, India, DIGITAL CONCEPTS is a Content Marketing company. They provide Content Marketing and Advertising and were founded in 2018.

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  • ITAIMS Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    16% Low/No Code Development
    10% Custom Software Development +13
    10% UX/UI Design
    7% Social Media Marketing
    5% Advertising
    5% Branding
    5% Digital Strategy
    5% E-Commerce Development
    5% Ecommerce Marketing
    5% Graphic Design
    5% Mobile & App Marketing
    5% Search Engine Optimization
    3% Affiliate Marketing
    3% Email Marketing
    1% Web Design

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% C# +7
    10% C++
    10% Go
    10% Java
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% jquery

    ITAIMS is a web development company headquartered in Ahmedabad, India. They focus on Web Development and UX/UI Design.

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  • Water communications Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49
    Mumbai, India

    Services provided

    10% Web Development
    20% Advertising
    20% Branding +11
    6% E-Commerce Development
    5% Content Marketing
    5% Mobile & App Marketing
    5% Pay Per Click
    5% Product Design
    5% Search Engine Optimization
    5% Social Media Marketing
    5% Video Production
    5% Web Design
    2% Digital Strategy
    2% UX/UI Design

    Focus Areas

    10% JavaScript
    70% PHP
    10% Java +1
    10% XML

    Water communications is an Advertising company. The team specializes in Advertising and Branding, and the company is located in Mumbai, India.

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  • Nogor Solutions Limited Logotype

    Nogor Solutions Limited

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% Direct Marketing
    20% Social Media Marketing +3
    20% Web Design
    10% Public Relations
    10% Search Engine Optimization

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP +7
    10% ASP.NET
    10% C#
    10% C++
    10% Objective C
    10% PHP
    10% SQL
    10% XML

    Nogor Solutions Limited is a Direct Marketing company. Based in Dhaka, Bangladesh, the agency specializes in Direct Marketing and Social Media Marketing.

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  • ELSA Information Technology Logotype

    ELSA Information Technology

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% Social Media Marketing
    20% Graphic Design +4
    10% Advertising
    10% Mobile App Development
    10% Search Engine Optimization
    10% Web Design

    Focus Areas

    10% JavaScript
    20% C++
    20% SQL +9
    10% Java
    5% ASP.NET
    5% C
    5% C#
    5% Kotlin
    5% Other programming & scripting languages
    5% Redux
    5% Visual Basic
    5% XML

    ELSA Information Technology is a social media marketing firm launched in 2004. The team provides Social Media Marketing and Graphic Design and is headquartered in Doha, Qatar.

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  • Sixth Sense IT Solutions Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    Indore, India

    Services provided

    10% Web Development
    10% AI Development
    10% Application Testing +7
    10% Blockchain
    10% CRM Consulting and SI
    10% ERP Consulting and SI
    10% IT Managed Services
    10% IT Strategy Consulting
    10% IoT Development
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    40% PHP
    10% AJAX +4
    10% Java
    10% Ruby
    10% SQL
    10% XML

    Sixth Sense IT Solutions is an artificial intelligence development company. In Indore, India and India, their team offers Artificial Intelligence and Blockchain.

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  • CHROMEIS Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Application Management & Support
    10% Application Testing +7
    10% Custom Software Development
    10% E-Commerce Development
    10% IT Managed Services
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    10% JavaScript
    30% PHP
    20% ASP.NET +2
    20% SQL
    20% Visual Basic

    CHROMEIS is a social media marketing company. They are headquartered in Lahore, Pakistan, and their services include Social Media Marketing and Search Engine Optimization.

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  • Hkinfoway Technologies Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    10 - 49
    Rajkot, India

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +12
    10% Mobile App Development
    10% Other Application Development
    5% Affiliate Marketing
    5% Application Management & Support
    5% Content Marketing
    5% Email Marketing
    5% IT Managed Services
    5% IoT Development
    5% Mobile & App Marketing
    5% Other Digital Marketing
    5% Social Media Marketing
    5% Wearable App Development

    Focus Areas

    10% JavaScript
    20% Objective C
    20% Swift +5
    10% AJAX
    10% Java
    10% Kotlin
    10% PHP
    10% SQL

    Custom software development firm Hkinfoway Technologies provides Custom Software Development and E-Commerce Development. They are located in Rajkot, India.

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  • Logic-Unit Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% Custom Software Development
    30% Mobile App Development +6
    5% E-Commerce Development
    5% Enterprise App Modernization
    5% Graphic Design
    5% Product Design
    5% UX/UI Design
    5% Web Design

    Focus Areas

    10% JavaScript
    25% C#
    20% Java +8
    10% ASP.NET
    10% Objective C
    10% PHP
    4% Other programming & scripting languages
    4% SQL
    3% Ember.js
    2% AJAX
    2% Redux

    Logic-Unit, a small custom software development company, is located in Houston, Texas and Karachi, Pakistan. Their services include Custom Software Development and Mobile App Development.

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  • EkoPC Bilisim Hiz. San. ve Tic. Ltd. Sti. Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Istanbul, Türkiye

    Services provided

    10% Web Development
    40% IT Managed Services
    20% IT Staff Augmentation +2
    20% Other IT Consulting and SI
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    20% Perl
    20% SQL +5
    10% AJAX
    10% Java
    10% Other programming & scripting languages
    10% PHP
    10% XML

    EkoPC Bilisim Hiz. San. Ve Tic. Ltd. Sti. Is an IT managed services company based in Istanbul, Türkiye and Istanbul, Türkiye. Their services include IT managed services and IT staff augmentation.

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  • Fathom Software LLC Logotype

    Fathom Software LLC

    Not yet reviewed

    $50,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    10% Web Development
    10% Application Management & Support
    10% Application Testing +7
    10% Custom Software Development
    10% Enterprise App Modernization
    10% IT Strategy Consulting
    10% IoT Development
    10% Low/No Code Development
    10% Mobile App Development
    10% Other Application Development

    Focus Areas

    10% JavaScript
    15% Redux
    15% Ruby +8
    10% Objective C
    10% SQL
    10% Swift
    10% Typescript
    5% ASP.NET
    5% Other programming & scripting languages
    5% PHP
    5% Python

    Fathom Software LLC is a small custom software development company founded in 2010. Their team focuses on Custom Software Development and IT strategy consulting.

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  • Kevnit Information Technology Company Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    Bengaluru, India

    Services provided

    10% Web Development
    10% AI Consulting
    10% AI Development +7
    10% Application Management & Support
    10% Blockchain
    10% Custom Software Development
    10% E-Commerce Development
    10% Mobile App Development
    10% Search Engine Optimization
    10% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% HTML5 +10
    10% Objective C
    10% Other programming & scripting languages
    10% Python
    10% Typescript
    5% C
    5% C++
    5% PHP
    5% SQL
    5% Swift
    5% jquery

    Kevnit Information Technology Company, a SEO services firm, is in Bengaluru, India. The team focuses on Search Engine Optimization and Web Design.

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  • i-Quall Infoweb Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    10 - 49
    Vadodara, India

    Services provided

    10% Web Development
    20% Mobile App Development
    10% API Development +6
    10% E-Commerce Development
    10% ERP Consulting and SI
    10% Graphic Design
    10% Low/No Code Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    25% Other programming & scripting languages
    25% PHP +3
    15% AJAX
    15% jquery
    10% HTML5

    I-Quall Infoweb is a website development firm based in Vadodara, India. Their services include Web Development and Mobile App Development.

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  • Dharma. Logotype

    Not yet reviewed

    $100,000+
    $100 - $149 / hr
    10 - 49
    Amersfoort, Netherlands

    Services provided

    10% Web Development
    70% Custom Software Development
    10% IT Strategy Consulting +1
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    70% PHP
    5% C# +3
    5% C++
    5% Objective C
    5% SQL

    Established in 2009, Dharma. Is a custom software development firm. The team offers Custom Software Development and UX/UI Design.

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  • Webunitech Solutions LLP Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% API Development
    10% Application Management & Support +12
    10% Custom Software Development
    10% E-Commerce Development
    10% Mobile App Development
    5% DevOps Managed Services
    5% Graphic Design
    5% IT Managed Services
    5% Microservices Architecture Services
    5% Other Application Development
    5% Recruiting
    5% UX/UI Design
    3% Web Design
    2% Logo

    Focus Areas

    10% JavaScript
    40% C#
    20% ASP.NET +5
    10% Other programming & scripting languages
    5% AJAX
    5% HTML5
    5% PHP
    5% jquery

    Webunitech Solutions LLP, a custom software development company, was founded in 2016. Headquartered in Sonipat, India, the team specializes in Custom Software Development and Web Development.

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  • Ergasti Digital Logotype

    Ergasti Digital

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% E-Commerce Development
    20% Ecommerce Marketing +3
    20% Media Planning & Buying
    20% Social Media Marketing
    10% Conversion Optimization

    Focus Areas

    10% JavaScript
    10% AJAX
    10% HTML5 +7
    10% PHP
    10% Python
    10% Ruby
    10% SQL
    10% Swift
    10% Visual Basic
    10% jquery

    Founded in 2016, Ergasti Digital is a small media planning & buying company. Their services include Media Planning & Buying and Social Media Marketing.

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  • M6 Technology Group Logotype

    M6 Technology Group

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    10 - 49

    Services provided

    10% Web Development
    30% IT Managed Services
    20% Search Engine Optimization +6
    10% Custom Software Development
    10% IT Strategy Consulting
    5% Application Management & Support
    5% Cloud Consulting & SI
    5% Mobile App Development
    5% Other IT Consulting and SI

    Focus Areas

    10% JavaScript
    30% Java
    20% PHP +5
    10% HTML5
    10% Other programming & scripting languages
    10% SQL
    5% C#
    5% C++

    IT managed services company M6 Technology Group specializes in IT managed services and Search Engine Optimization. They are located in Cheektowaga, New York.

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  • Podii Consultants Ltd Logotype

    Podii Consultants Ltd

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Custom Software Development
    20% DevOps Managed Services +5
    15% Application Testing
    10% IoT Development
    10% Low/No Code Development
    10% Mobile App Development
    5% Cloud Consulting & SI

    Focus Areas

    10% JavaScript
    20% HTML5
    20% Other programming & scripting languages +3
    20% XML
    20% jquery
    10% C++

    Podii Consultants Ltd is a custom software development firm. The Kisumu, Kenya-based company was founded in 2018. Their services include Custom Software Development and DevOps Managed Services.

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  • TRIMURTY Digital Marketing Services Logotype

    5.0 3 reviews
    $1,000+
    $50 - $99 / hr
    50 - 249
    Sasaram, India

    Services provided

    20% Web Development
    50% Search Engine Optimization
    20% Web Design +1
    10% Pay Per Click

    Focus Areas

    10% JavaScript
    50% PHP
    15% SQL +3
    10% HTML5
    10% Visual Basic
    5% XML

    TRIMURTY Digital Marketing Services specializes in search engine optimization, pay-per-click advertising, local business listing, and lead generation services. Across various reviews, clients consistently praise their expertise in SEO, timely project delivery, and professional communication. They are recognized for aligning well with client values and offering good value for cost, with no notable areas for improvement mentioned.

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  • Leftcoast Studios Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    Freelancer
    Laguna Beach, CA

    Services provided

    20% Web Development
    35% Web Design
    15% Advertising +3
    10% Branding
    10% Low/No Code Development
    10% UX/UI Design

    Focus Areas

    40% JavaScript
    40% PHP
    20% HTML5

    In Laguna Beach, California, Leftcoast Studios is a web design agency. Their services include Web Design and Web Development.

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  • ProBiz Services sp z o.o. Logotype

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

    Services provided

    10% Web Development
    20% Application Management & Support
    20% E-Commerce Development +3
    20% IT Managed Services
    20% Search Engine Optimization
    10% Low/No Code Development

    Focus Areas

    20% JavaScript
    20% AJAX
    20% PHP +2
    20% Redux
    20% SQL

    ProBiz Services sp z o.o. offers services in SEO and website optimization, catering to various business needs, such as improving website traffic. Overall, clients appreciate their effective project management, competitive pricing, and the tangible outcomes of increased website visitors, with no noted areas for improvement.

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  • Jexcore Infotech Private Limited Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Ahmedabad, India

    Services provided

    10% Web Development
    35% Search Engine Optimization
    15% Content Marketing +5
    10% Pay Per Click
    10% Social Media Marketing
    10% Web Design
    5% Blockchain
    5% Mobile App Development

    Focus Areas

    13% JavaScript
    25% PHP
    25% SQL +2
    24% AJAX
    13% Java

    Jexcore Infotech Private Limited is a midsize SEO agency. Founded in 2017, the team offers Search Engine Optimization and Content Marketing.

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  • Ghlic Logotype

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

    Services provided

    15% Web Development
    20% UX/UI Design
    20% Web Design +4
    15% E-Commerce Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    10% JavaScript
    40% PHP
    20% SQL +3
    10% AJAX
    10% Python
    10% XML

    Ghlic offers ecommerce site development, logo design, branding, and digital marketing services. The overall feedback highlights Ghlic’s creativity, efficiency, and professionalism, with a strong emphasis on effective project management. Reviewers appreciate the team's unique skills and smart approach, though there is a suggestion for the company to invest more in expansion.

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  • Zirco Mobile Logotype

    Zirco Mobile

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    15% Web Development
    15% E-Commerce Development
    15% Mobile App Development +6
    10% Application Management & Support
    10% Application Testing
    10% Custom Software Development
    10% Enterprise App Modernization
    10% UX/UI Design
    5% IT Managed Services

    Focus Areas

    10% JavaScript
    15% C#
    10% ASP.NET +7
    10% Java
    10% Objective C
    10% PHP
    10% Ruby
    10% SQL
    10% XML
    5% Other programming & scripting languages

    E-commerce development firm Zirco Mobile offers E-Commerce Development and Mobile App Development. They are located in India.

    Read more
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  • Creatosolution Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    40% Web Design
    10% Custom Software Development +7
    10% Mobile App Development
    5% Application Testing
    5% Blockchain
    5% E-Commerce Development
    5% Enterprise App Modernization
    5% Graphic Design
    5% Other Application Development

    Focus Areas

    15% JavaScript
    30% PHP
    10% ASP +5
    10% Objective C
    10% Python
    10% SQL
    10% Swift
    5% AJAX

    Creatosolution is a web design company. Based in Jaipur, India and India, the company was launched in 2012. Their services include Web Design and Custom Software Development.

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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

    35.9/40.0
    19/20 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. unicrew Logotype

    unicrew

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

    Ability to deliver

    33.8/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    5/10 Market Presence

    Service focus

    30% Web Development
    50% JavaScript
    70% Other
    View Profile Visit Website
  29. 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
  30. 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

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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