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Home Web Developers JavaScript

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 21, 2026
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22,371 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • CryptoMaticz Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    40% Blockchain
    10% BI & Big Data Consulting & SI +4
    10% IoT Development
    10% Mobile App Development
    10% Product Design
    10% Web Design

    Focus Areas

    10% JavaScript
    10% Kotlin
    10% Objective C +7
    10% Other programming & scripting languages
    10% PHP
    10% Perl
    10% Python
    10% Ruby
    10% SQL
    10% Swift

    CryptoMaticz, a midsize Blockchain company, is in Madurai, India. The team specializes in Blockchain and Web Design.

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  • Iknasoft Logotype

    Iknasoft

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249

    Services provided

    10% Web Development
    12% Low/No Code Development
    5% AI Development +17
    5% Advertising
    5% Branding
    5% Content Marketing
    5% Corporate Photography
    5% Ecommerce Marketing
    5% Email Marketing
    5% Logo
    5% Packaging Design
    5% Pay Per Click
    5% Product Design
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design
    5% Video Production
    1% Custom Software Development
    1% Mobile App Development
    1% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% HTML5 +7
    10% Java
    10% Objective C
    10% PHP
    10% Python
    10% Ruby
    10% SQL
    10% Visual Basic

    Iknasoft is a midsize Dubai, United Arab Emirates-based website development firm. The team provides Web Development and Advertising.

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  • Hashtag Orange Advertising Pvt. Ltd. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Gurugram, India

    Services provided

    10% Web Development
    20% Search Engine Optimization
    15% Pay Per Click +6
    10% Advertising
    10% Low/No Code Development
    10% Mobile App Development
    10% Social Media Marketing
    10% Video Production
    5% Affiliate Marketing

    Focus Areas

    10% JavaScript
    20% PHP
    10% AJAX +6
    10% Objective C
    10% Other programming & scripting languages
    10% Python
    10% SQL
    10% Swift
    10% Visual Basic

    In Gurugram, India, Hashtag Orange Advertising Pvt. Ltd. Is a SEO services firm. The team focuses on Search Engine Optimization and Pay Per Click.

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  • Macron Solutions Limited Logotype

    Macron Solutions Limited

    Not yet reviewed

    Undisclosed
    $100 - $149 / hr
    Freelancer

    Services provided

    20% Web Development
    20% Application Management & Support
    20% Custom Software Development +2
    20% E-Commerce Development
    20% Low/No Code Development

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% C# +3
    20% SQL
    10% HTML5
    10% Typescript

    Macron Solutions Limited is an Auckland, New Zealand-based software development firm. Their services include Custom Software Development and Web Development.

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  • YOODOBUZZ PVT LTD Logotype

    YOODOBUZZ PVT LTD

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Blockchain
    10% CRM Consulting and SI +9
    10% Custom Software Development
    10% E-Commerce Development
    10% ERP Consulting and SI
    10% IT Managed Services
    10% IT Strategy Consulting
    10% Mobile App Development
    5% IoT Development
    4% Low/No Code Development
    1% Other Application Development

    Focus Areas

    10% JavaScript
    15% Java
    15% Objective C +5
    15% Other programming & scripting languages
    15% PHP
    10% ASP.NET
    10% Kotlin
    10% SQL

    YOODOBUZZ PVT LTD is an IT strategy consulting company. The puliangudi, India-based company was founded in 2019. Their team provides IT strategy consulting and CRM consulting and SI.

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  • SyntecX Global Corporation Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    50 - 249
    Fredericton, Canada

    Services provided

    10% Web Development
    25% Mobile App Development
    20% Custom Software Development +6
    10% API Development
    10% E-Commerce Development
    10% IoT Development
    5% AI Development
    5% DevOps Managed Services
    5% IT Managed Services

    Focus Areas

    10% JavaScript
    30% PHP
    25% SQL +3
    15% Python
    10% Other programming & scripting languages
    10% jquery

    SyntecX Global Corporation is a mobile app development firm launched in 2005. Their services include Mobile App Development and Custom Software Development.

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  • Devant IT Solutions Pvt Ltd Logotype

    4.5 2 reviews
    $1,000+
    < $25 / hr
    10 - 49
    Kolkata, India

    Services provided

    20% Web Development
    20% CRM Consulting and SI
    20% Search Engine Optimization +3
    20% Social Media Marketing
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    20% JavaScript
    25% PHP
    20% Kotlin +2
    20% Python
    15% HTML5

    Devant IT Solutions Pvt Ltd provides Website Development and Search Engine Optimization (SEO) services, offering visually appealing web design and robust online development solutions. Client feedback highlights their ability to deliver high-quality web programming projects efficiently, with seamless communication and a strong alignment with client values, resulting in increased website traffic, improved user engagement, and enhanced brand visibility.

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  • NASS Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    Bristol, England

    Services provided

    20% Web Development
    20% Branding
    20% Graphic Design +3
    20% Logo
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    20% JavaScript
    20% C#
    20% Python +2
    20% SQL
    20% Typescript

    NASS is a branding company. The team offers Branding and Web Design and is based in Bristol, England.

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  • THAAYAKAM LTD Logotype

    THAAYAKAM LTD

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

    Services provided

    15% Web Development
    25% Cloud Consulting & SI
    25% Mobile App Development +5
    10% Low/No Code Development
    10% UX/UI Design
    5% AI Development
    5% Branding
    5% IT Managed Services

    Focus Areas

    10% JavaScript
    40% PHP
    35% Python +1
    15% ASP.NET

    THAAYAKAM LTD offers IT infrastructure modernization services, including website revamps and mobile application development. Client feedback highlights their professional recommendations, effective communication, and timely project delivery with significant traffic increases. Their ability to convey technical insights clearly to non-technical stakeholders and provide post-launch training sessions is particularly commendable.

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  • TBL Tech Nerds Logotype

    TBL Tech Nerds

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% Mobile App Development
    20% Custom Software Development +5
    15% UX/UI Design
    10% Web Design
    5% Logo
    5% Other Application Development
    5% Other Design

    Focus Areas

    10% JavaScript
    25% Swift
    20% Objective C +6
    10% C
    10% Java
    10% PHP
    5% ASP.NET
    5% C++
    5% SQL

    TBL Tech Nerds is a small application development company based in Denver, Colorado. Their services include Mobile App Development and Custom Software Development.

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  • Dtory Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Logo
    20% UX/UI Design +6
    14% Low/No Code Development
    10% Graphic Design
    10% Mobile App Development
    10% Web Design
    5% API Development
    1% Custom Software Development

    Focus Areas

    15% JavaScript
    25% Typescript
    15% Java +6
    10% Ember.js
    10% HTML5
    10% Kotlin
    5% Other programming & scripting languages
    5% Python
    5% SQL

    Dtory is a small UX design agency based in Durgapur, India. Their services include UX/UI Design and Logo.

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  • Percs Creative Agency Logotype

    Percs Creative Agency

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

    Services provided

    15% Web Development
    10% E-Commerce Development
    10% Ecommerce Marketing +11
    10% Search Engine Optimization
    10% UX/UI Design
    5% Advertising
    5% Branding
    5% Content Marketing
    5% Digital Strategy
    5% Email Marketing
    5% Marketing Strategy
    5% Product Marketing
    5% Social Media Marketing
    5% Web Design

    Focus Areas

    15% JavaScript
    35% HTML5
    35% jquery +2
    10% PHP
    5% Typescript

    Percs Creative Agency provides comprehensive services in Website Development, Web Design, and Online Development, specializing in creating user-friendly platforms with advanced functionalities. Reviews highlight their exceptional technical expertise, cost-effectiveness, and strong alignment with client values, resulting in successful project outcomes through meticulous attention to detail and responsive project management. Their holistic approach ensures seamless integration of business requirements and effective marketing and branding efforts.

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  • Suhu Digital Agency Logotype

    Suhu Digital Agency

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Corporate Training & Coaching
    20% Mobile App Development +2
    20% Search Engine Optimization
    20% Social Media Marketing

    Focus Areas

    10% JavaScript
    15% Other programming & scripting languages
    15% Python +6
    10% Ember.js
    10% Java
    10% Objective C
    10% PHP
    10% Perl
    10% Swift

    Suhu Digital Agency, a social media marketing firm, is based in Jakarta, Indonesia. They focus on Social Media Marketing and Search Engine Optimization.

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  • MHH - Technologies Logotype

    MHH - Technologies

    Not yet reviewed

    $25,000+
    < $25 / hr
    Freelancer

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Mobile App Development +3
    20% Other Application Development
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% HTML5 +7
    10% Kotlin
    10% PHP
    10% Redux
    10% SQL
    10% Swift
    10% Typescript
    10% XML

    MHH - Technologies is a custom software development company founded in 2023. Their team offers Custom Software Development and Web Development.

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  • AppVelocity Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    2 - 9
    Montreal, Canada

    Services provided

    15% Web Development
    60% Mobile App Development
    25% Custom Software Development

    Focus Areas

    10% JavaScript
    20% Kotlin
    20% Objective C +3
    20% Python
    20% Swift
    10% PHP

    Established in 2018, AppVelocity is a small Montreal, Canada-based mobile app development company. Their services include Mobile App Development and Custom Software Development.

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  • Creative Spark Solutions Logotype

    Creative Spark Solutions

    Not yet reviewed

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

    Services provided

    15% Web Development
    35% Custom Software Development
    35% Mobile App Development +1
    15% E-Commerce Development

    Focus Areas

    10% JavaScript
    30% C#
    20% ASP.NET +3
    20% PHP
    10% Ruby
    10% SQL

    Software development firm Creative Spark Solutions is in Delhi, India. They provide Custom Software Development and Mobile App Development and were founded in 2012.

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  • kshekh.com Logotype

    kshekh.com

    Not yet reviewed

    Undisclosed
    < $25 / hr
    10 - 49

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Mobile App Development +2
    20% Search Engine Optimization
    20% Web Design

    Focus Areas

    15% JavaScript
    20% HTML5
    15% Python +5
    10% PHP
    10% Redux
    10% Typescript
    10% XML
    10% jquery

    SEO agency kshekh.com is in Jaipur, India. Their services include Search Engine Optimization and Web Design.

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    $50 Best for landing page $230 Best for upto 5 Pages website $500 Full customizaton website

    Full Stack Development React.js Next.js

    Get your web pages in Tailwind CSS with chosen frameworks e.g. React, NextJS, Vue, Svelte, AngularJS & ShadcnUI. Here you will get complete and standard code in standard HTML5. Expert Figma to Tailwind CSS Conversion for React, Svelte, and Vue - Create Stunning UIs for Your Web Apps!
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  • Palnode Logotype

    Palnode

    5.0 1 review
    Undisclosed
    $50 - $99 / hr
    10 - 49

    Services provided

    10% Web Development
    20% Corporate Training & Coaching
    20% E-Commerce Development +3
    20% Search Engine Optimization
    20% Social Media Marketing
    10% AR/VR Development

    Focus Areas

    11% JavaScript
    12% Kotlin
    11% Ember.js +6
    11% Java
    11% Objective C
    11% Other programming & scripting languages
    11% PHP
    11% Python
    11% Swift

    Palnode offers Website Development services, including Web Design and Web Programming, with a focus on creating responsive, user-friendly sites that align with client branding. Feedback highlights Palnode's professionalism, effective communication, and attention to detail. Clients commend their client-centric approach and technical expertise, though some suggest initial project scope clarity and quicker feedback turnaround as areas for improvement.

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  • WE Media Communications Logotype

    WE Media Communications

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49

    Services provided

    10% Web Development
    10% Content Writing Services
    10% Marketing Strategy +12
    10% Social Media Marketing
    10% Web Design
    5% Advertising
    5% Branding
    5% Business Consulting
    5% Content Marketing
    5% Digital Strategy
    5% Graphic Design
    5% Media Planning & Buying
    5% Product Marketing
    5% Search Engine Optimization
    5% UX/UI Design

    Focus Areas

    11% JavaScript
    12% PHP
    11% Ember.js +6
    11% Java
    11% Objective C
    11% Other programming & scripting languages
    11% Python
    11% Redux
    11% Visual Basic

    WE Media Communications is a small Marketing Strategy company founded in 2021. Their team specializes in Marketing Strategy and Social Media Marketing.

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  • WSI Digital Marketing Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Pointe-Claire, Canada

    Services provided

    35% Web Development
    40% Search Engine Optimization
    10% Pay Per Click +2
    10% Social Media Marketing
    5% Graphic Design

    Focus Areas

    33% JavaScript
    34% HTML5
    33% PHP

    Headquartered in Pointe-Claire, Canada, WSI Digital Marketing is a SEO company. They focus on Search Engine Optimization and Web Development.

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  • Volvsoft, Inc. Logotype

    5.0 3 reviews
    $25,000+
    $25 - $49 / hr
    50 - 249
    Sahibzada Ajit Singh Nagar, India

    Services provided

    10% Web Development
    15% Mobile App Development
    10% AI Development +9
    10% AR/VR Development
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% Web Design
    5% Blockchain
    5% E-Commerce Development
    5% IoT Development
    5% Search Engine Optimization
    5% Social Media Marketing

    Focus Areas

    11% JavaScript
    21% ASP.NET
    21% C# +6
    11% Other programming & scripting languages
    11% PHP
    10% SQL
    5% Python
    5% Redux
    5% Typescript

    USA Manufacturing AI Tech Partner & Custom Software Leader 27% throughput gains, 22% cost reductions for American factories via plug-and-play AI solutions. Custom ERP, OEE dashboards, MES

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  • Lolli Media Limited Logotype

    Lolli Media Limited

    Not yet reviewed

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

    Services provided

    30% Web Development
    40% Web Design
    10% E-Commerce Development +3
    10% UX/UI Design
    5% Branding
    5% Search Engine Optimization

    Focus Areas

    15% JavaScript
    30% HTML5
    25% PHP +2
    20% SQL
    10% jquery

    Web design agency Lolli Media Limited is headquartered in Hong Kong, Hong Kong. They focus on Web Design and Web Development.

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  • Portobyte Logotype

    Not yet reviewed

    Undisclosed
    $200 - $300 / hr
    Freelancer
    Zagreb, Croatia

    Services provided

    20% Web Development
    30% Enterprise App Modernization
    10% Custom Software Development +4
    10% IT Strategy Consulting
    10% Low/No Code Development
    10% Other Application Development
    10% Other IT Consulting and SI

    Focus Areas

    10% JavaScript
    50% Java
    20% Kotlin +1
    20% SQL

    Web development firm Portobyte was launched in 2022. The team offers Web Development and Enterprise App Modernization.

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  • Icetea Software Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    35% Blockchain
    15% E-Commerce Development +6
    13% Low/No Code Development
    10% AR/VR Development
    10% Custom Software Development
    5% Microservices Architecture Services
    1% Mobile App Development
    1% Other Application Development

    Focus Areas

    16% JavaScript
    21% Java
    11% Go +8
    11% Python
    11% Typescript
    5% ASP.NET
    5% C#
    5% C++
    5% Kotlin
    5% PHP
    5% Scala

    Icetea Software is a Blockchain company. The Ha Noi, Vietnam-based agency was established in 2017. Their services include Blockchain and E-Commerce Development.

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  • Ottawa Web Genius Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    2 - 9
    Ottawa, Canada

    Services provided

    30% Web Development
    25% Search Engine Optimization
    20% Web Design +2
    15% E-Commerce Development
    10% Low/No Code Development

    Focus Areas

    15% JavaScript
    20% C++
    20% HTML5 +3
    15% PHP
    15% Python
    15% SQL

    Ottawa Web Genius, a web design agency, provides Web Design and Web Development. The agency is based in Ottawa, Canada.

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  • SyncTech Solutions Logotype

    SyncTech Solutions

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

    Services provided

    15% Web Development
    20% Call Center Services
    15% Custom Software Development +5
    15% Unified Communications Consulting & SI
    10% E-Commerce Development
    10% Mobile App Development
    10% Other Application Development
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    30% Other programming & scripting languages
    20% PHP +3
    20% Python
    10% ASP.NET
    10% HTML5

    SyncTech Solutions specializes in Website Development, Web Design, and Online Development services. The reviews highlight their impressive design capabilities and efficient delivery of projects, emphasizing their ability to meet client requirements effectively. Clients commend SyncTech Solutions for their professionalism and straightforward communication, making them a highly recommended partner for web development projects.

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  • shadowws Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    20% CRM Consulting and SI
    20% Graphic Design +3
    20% Web Design
    15% ERP Consulting and SI
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    20% C
    20% C++ +3
    20% Java
    20% PHP
    10% C#

    Shadowws is a CRM consulting and SI company. They are based in Madurai, India and Madurai, India and have small team. They offer CRM consulting and SI and Graphic Design.

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  • K-Plus Technology Solutions, LLC Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    70% IT Managed Services
    15% Staffing

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% C++ +7
    10% HTML5
    10% Java
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% SQL
    10% Visual Basic

    K-Plus Technology Solutions, LLC, an IT managed services company, was established in 2001. The team offers IT managed services and Web Development.

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  • WebCaliper Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% Content Marketing
    15% Mobile App Development +6
    15% Search Engine Optimization
    10% E-Commerce Development
    10% Mobile & App Marketing
    10% Pay Per Click
    10% Web Design
    5% Custom Software Development

    Focus Areas

    15% JavaScript
    40% PHP
    15% Java +4
    10% ASP.NET
    10% SQL
    5% ASP
    5% Swift

    WebCaliper is a small Ahmedabad, India-based Content Marketing company. The team provides Content Marketing and Mobile App Development.

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  • Cybermax Solutions Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% AI Development
    20% AI Consulting +3
    20% Custom Software Development
    10% Cloud Consulting & SI
    10% IT Staff Augmentation

    Focus Areas

    10% JavaScript
    30% PHP
    25% ASP.NET +3
    20% C#
    10% SQL
    5% ASP

    Established in 2006, Cybermax Solutions is an artificial intelligence company. The firm offers Artificial Intelligence and Custom Software Development, and is small.

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  • Simple Simple Advertising Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    10 - 49
    Calgary, Canada

    Services provided

    15% Web Development
    15% Advertising
    15% Branding +5
    15% Search Engine Optimization
    10% Market Research
    10% Media Planning & Buying
    10% Pay Per Click
    10% Social Media Marketing

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP.NET +7
    10% C++
    10% Java
    10% PHP
    10% Python
    10% SQL
    10% Visual Basic
    10% XML

    Simple Simple Advertising is an Advertising company established in 2006. The company specializes in Advertising and Branding, and is small.

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  • Asmobisoft Logotype

    Asmobisoft

    Not yet reviewed

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

    Services provided

    15% Web Development
    20% Mobile App Development
    5% Application Management & Support +12
    5% Application Testing
    5% Branding
    5% Custom Software Development
    5% E-Commerce Development
    5% Graphic Design
    5% Logo
    5% Mobile & App Marketing
    5% Pay Per Click
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design
    5% Web Design

    Focus Areas

    10% JavaScript
    20% Java
    20% PHP +4
    20% Swift
    10% Kotlin
    10% Objective C
    10% SQL

    Asmobisoft is a small application development firm in India. The team focuses on Mobile App Development and Web Development.

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  • VeroZone Solutions SRL Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Chișinău, Moldova

    Services provided

    15% Web Development
    15% Custom Software Development
    10% IT Strategy Consulting +10
    10% Other Application Development
    10% Web Design
    5% Application Management & Support
    5% CRM Consulting and SI
    5% E-Commerce Development
    5% ERP Consulting and SI
    5% IT Managed Services
    5% Mobile App Development
    5% Other IT Consulting and SI
    5% UX/UI Design

    Focus Areas

    10% JavaScript
    70% PHP
    10% AJAX +1
    10% Other programming & scripting languages

    Headquartered in Chișinău, Moldova, VeroZone Solutions SRL is a software development company. The team focuses on Custom Software Development and Web Development.

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  • AHT Cloud Logotype

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    10 - 49
    Calgary, Canada

    Services provided

    15% Web Development
    15% Custom Software Development
    15% IT Managed Services +5
    15% Web Design
    10% Advertising
    10% E-Commerce Development
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

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

    Located in Calgary, Canada, AHT Cloud is a web design company. They offer Web Design and IT managed services and were founded in 2020.

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  • Converzent Technologies Logotype

    Converzent Technologies

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% Back Office Outsourcing
    15% Call Center Services +4
    15% E-Commerce Development
    15% Search Engine Optimization
    15% Web Design
    10% Corporate Training & Coaching

    Focus Areas

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

    Established in 2012, Converzent Technologies is a SEO services firm. Their team focuses on Search Engine Optimization and Web Design.

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  • Applicate IT Logotype

    Not yet reviewed

    Undisclosed
    $50 - $99 / hr
    10 - 49
    Silkeborg, Denmark

    Services provided

    10% Web Development
    80% Custom Software Development
    10% Mobile App Development

    Focus Areas

    15% JavaScript
    32% C#
    21% SQL +8
    7% PHP
    7% Python
    5% Objective C
    5% Swift
    3% Java
    2% Kotlin
    2% XML
    1% Go

    Applicate IT is a custom software development firm. They offer Custom Software Development and Web Development and were founded in 2010.

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  • Global Height Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Delhi, India

    Services provided

    10% Web Development
    15% Search Engine Optimization
    15% Social Media Marketing +9
    10% Content Marketing
    10% Digital Strategy
    10% Mobile App Development
    5% Branding
    5% Business Consulting
    5% E-Commerce Development
    5% Email Marketing
    5% Market Research
    5% Marketing Strategy

    Focus Areas

    15% JavaScript
    20% C++
    15% Java +5
    15% PHP
    15% Python
    10% C#
    5% ASP.NET
    5% C

    Small social media marketing agency Global Height, is located in Delhi, India. Their services include Social Media Marketing and Search Engine Optimization.

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  • Broadteam Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    25% IT Managed Services
    15% Custom Software Development +7
    15% Other IT Consulting and SI
    10% Enterprise App Modernization
    5% Application Testing
    5% Broadcast Video
    5% Other Application Development
    5% UX/UI Design
    5% Video Production

    Focus Areas

    15% JavaScript
    35% SQL
    20% Python +4
    10% C#
    10% Visual Basic
    5% Ember.js
    5% PHP

    Broadteam is an IT managed services company. Launched in 2015, the team offers IT managed services and other IT consulting and SI.

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  • Bitnet Infotech Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    25% Mobile App Development
    15% Low/No Code Development +8
    10% E-Commerce Development
    10% Web Design
    5% Application Management & Support
    5% Graphic Design
    5% IoT Development
    5% Logo
    5% Other Application Development
    5% UX/UI Design

    Focus Areas

    15% JavaScript
    20% Typescript
    10% Kotlin +7
    10% Other programming & scripting languages
    10% PHP
    10% Redux
    10% SQL
    5% AJAX
    5% Objective C
    5% Swift

    Bitnet Infotech is a Rajkot, India-based application development firm. They specialize in Mobile App Development and Web Development and were founded in 2016.

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  • INDI Technology Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49
    East Jakarta, Indonesia

    Services provided

    10% Web Development
    10% Custom Software Development
    10% Digital Strategy +10
    10% IT Strategy Consulting
    10% Low/No Code Development
    10% Mobile App Development
    10% Social Media Marketing
    5% Application Management & Support
    5% Cloud Consulting & SI
    5% Content Marketing
    5% E-Commerce Development
    5% Mobile & App Marketing
    5% Search Engine Optimization

    Focus Areas

    15% JavaScript
    25% PHP
    20% HTML5 +4
    15% Kotlin
    10% Typescript
    10% XML
    5% SQL

    INDI Technology is a software development company. Based in East Jakarta, Indonesia, the team provides Custom Software Development and Web Development.

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  • Elite Seo Web Logotype

    Elite Seo Web

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49

    Services provided

    10% Web Development
    35% Search Engine Optimization
    20% Social Media Marketing +5
    10% Pay Per Click
    10% Web Design
    5% Logo
    5% Mobile App Development
    5% UX/UI Design

    Focus Areas

    15% JavaScript
    55% PHP
    15% Python +2
    10% XML
    5% HTML5

    Elite Seo Web, a SEO company, was launched in 2012. Located in Bhubaneswar, India, the team provides Search Engine Optimization and Social Media Marketing.

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  • Zedkira Ltd Logotype

    Zedkira Ltd

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% E-Commerce Development
    13% Low/No Code Development +9
    10% AI Development
    10% Application Testing
    10% Mobile App Development
    10% Robotics Process Automation
    5% Application Management & Support
    5% Blockchain
    5% Cybersecurity
    1% Custom Software Development
    1% Other Application Development

    Focus Areas

    15% JavaScript
    20% Python
    10% Kotlin +9
    10% Objective C
    10% Swift
    5% AJAX
    5% C++
    5% Java
    5% Other programming & scripting languages
    5% PHP
    5% Ruby
    5% SQL

    Zedkira Ltd is an e-commerce development company. The firm is located in London, England. Their team focuses on E-Commerce Development and Low/No Code Development.

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  • Greenti Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    Breña, Peru

    Services provided

    10% Web Development
    70% Mobile App Development
    15% Custom Software Development +1
    5% UX/UI Design

    Focus Areas

    10% JavaScript
    20% Kotlin
    20% Redux +6
    15% SQL
    10% HTML5
    10% Java
    5% Objective C
    5% Visual Basic
    5% jquery

    Founded in 2022, Greenti is a mobile application development company. The team offers Mobile App Development and Custom Software Development.

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  • Neuserv Logotype

    Neuserv

    Not yet reviewed

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

    Services provided

    20% Web Development
    40% Custom Software Development
    20% Application Management & Support +1
    20% Enterprise App Modernization

    Focus Areas

    10% JavaScript
    50% Java
    20% SQL +2
    10% Other programming & scripting languages
    10% XML

    Launched in 2008, Neuserv is a software development firm. The team offers Custom Software Development and Enterprise App Modernization.

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  • iDMK sp. z o.o. Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    2 - 9
    Wolsztyn, Poland

    Services provided

    20% Web Development
    50% Custom Software Development
    10% Accounting +2
    10% Application Testing
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    40% C#
    20% SQL +3
    10% C++
    10% PHP
    10% XML

    IDMK sp. Z o.o. Is a software development firm. They are in Wolsztyn, Poland. Their team focuses on Custom Software Development and Web Development.

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  • Softinator TechLabs Private Limited Logotype

    5.0 7 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249
    Indore, India

    Services provided

    10% Web Development
    30% AI Development
    15% Low/No Code Development +4
    15% Mobile App Development
    10% AR/VR Development
    10% DevOps Managed Services
    10% E-Commerce Development

    Focus Areas

    15% JavaScript
    30% Swift
    20% PHP +3
    15% HTML5
    10% Delphi
    10% Java

    Softinator TechLabs Private Limited is a web development company specializing in custom WordPress plugin development and full-stack web development. They received 100% positive feedback, with clients praising their ability to deliver complex, high-performing solutions within budget and timelines. Their work significantly enhances operational efficiency and customer experience.

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  • BLENDER Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49
    Dnipro, Ukraine

    Services provided

    20% Web Development
    30% Pay Per Click
    20% Search Engine Optimization +2
    20% Social Media Marketing
    10% Video Production

    Focus Areas

    15% JavaScript
    20% Other programming & scripting languages
    15% HTML5 +5
    10% AJAX
    10% PHP
    10% Ruby
    10% SQL
    10% jquery

    BLENDER is a pay per click company. They provide Pay Per Click and Social Media Marketing and are based in Dnipro, Ukraine.

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  • Atom Digital Services Logotype

    Atom Digital Services

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

    Services provided

    10% Web Development
    30% Search Engine Optimization
    30% Web Design +2
    20% Branding
    10% AR/VR Development

    Focus Areas

    11% JavaScript
    12% Kotlin
    11% Ember.js +6
    11% Objective C
    11% Other programming & scripting languages
    11% PHP
    11% Python
    11% Redux
    11% Visual Basic

    Atom Digital Services offers website design with additional benefits like free hosting and domain services. Client reviews highlight their professionalism, creativity, and effective communication. Positive feedback includes timely project completion and value-added services, enhancing the client's professional image without any noted areas for improvement.

    See all 1 projects
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  • Arilan Media Logotype

    4.5 1 review
    $1,000+
    < $25 / hr
    2 - 9
    Nairobi, Kenya

    Services provided

    10% Web Development
    20% Search Engine Optimization
    20% Social Media Marketing +3
    20% Web Design
    15% Pay Per Click
    15% Video Marketing

    Focus Areas

    11% JavaScript
    12% PHP
    11% Ember.js +6
    11% Other programming & scripting languages
    11% Python
    11% Redux
    11% Ruby
    11% Swift
    11% Visual Basic

    Arilan Media specializes in Website Development and Web Design, providing online development solutions tailored to clients' needs. Feedback highlights their effective project management, excellent customer service, and the positive impact of their lead generation campaigns. Clients found Arilan Media to deliver valuable and responsive web solutions that significantly enhanced business performance.

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  • Mindcorn Technology Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +9
    10% Graphic Design
    10% Mobile App Development
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design
    5% Affiliate Marketing
    5% IoT Development
    5% Pay Per Click
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    15% Other programming & scripting languages
    10% AJAX +8
    10% Kotlin
    10% PHP
    10% Swift
    10% Typescript
    10% jquery
    5% ASP.NET
    5% HTML5
    5% Java

    In Greater Noida, India, Mindcorn Technology Pvt Ltd is a SEO company. The team provides Search Engine Optimization and Web Design.

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Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. Our team of specialists confirms the identity of each reviewer, ensures the project is legitimate, and only publishes reviews that meet our strict criteria.

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We evaluate service providers using a structured methodology that combines:

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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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