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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: December 24, 2025
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15 Leaders 15 Contenders

21,454 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

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    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

    4.9 87 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

    50% Web Development
    50% Custom Software Development

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% C# +7
    10% Java
    10% PHP
    10% Python
    10% Rust
    10% SQL
    10% Scala
    10% Swift

    Digis, a Fiverr company (NYSE: FVRR), is a web development firm offering comprehensive solutions in custom website development, full-stack web development, and web application development. With 100% positive feedback, clients commend their seamless integration into teams, high-quality deliverables, and responsiveness. Approximately 80% of reviews highlight their effective project management and communication, emphasizing their reliability and expertise in meeting project milestones.

    See all 87 projects
    6 of 6 reviews are 5 stars
    1 new review for Web Development services
    $10,000 – $49,000 avg. project cost

    Reviewed 6 times in the past 6 months

    Recent reviews for Digis highlight a strong overall sentiment, emphasizing excellent communication, timely delivery, and effective project management. Clients praised their quality of work, with one noting a 25% reduction in bug backlog and another highlighting increased conversions and improved user satisfaction. Specific feedback included the ability to adapt quickly to project needs and a solid understanding of Agile methodologies. No significant areas for improvement were identified, indicating high client satisfaction.
    Read 6 Recent Reviews
    5 of 5 JavaScript reviews are 5 stars
    2 new reviews for JavaScript in past 6 months
    $10,000 – $49,000 avg. project cost

    JavaScript Experience

    Digis has received overwhelmingly positive feedback from clients regarding their JavaScript services, with 92% of reviews highlighting strong project management and timely delivery. Clients frequently commend their top-tier developers and effective communication, resulting in faster feature delivery and enhanced productivity. Notably, 100% of reviewers did not identify any areas for improvement. The consistent ability to meet deadlines and provide quality solutions has made Digis a preferred partner for various projects, demonstrating their expertise in JavaScript-based applications.

    Read Most Recent Review

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    $50,000 Best for Small Companies $75,000 Best for Medium Companies $100,000 Best for Enterprises

    Custom Product Development

    Our specialists around the globe provide the expertise and development resources to scale your IT products and achieve success.
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  • CGR Creative Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Search Engine Optimization
    20% Web Design +6
    10% Advertising
    10% Graphic Design
    10% Media Planning & Buying
    10% Pay Per Click
    5% Digital Strategy
    5% Social Media Marketing

    Focus Areas

    20% JavaScript
    20% PHP
    20% SQL +4
    10% AJAX
    10% ASP
    10% Other programming & scripting languages
    10% XML

    CGR Creative is a SEO services firm. Launched in 2002, their team provides Search Engine Optimization and Web Design.

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  • Norjimm Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Mobile App Development +4
    15% BI & Big Data Consulting & SI
    10% Custom Software Development
    10% Search Engine Optimization
    5% AI Development

    Focus Areas

    10% JavaScript
    30% PHP
    20% SQL +4
    10% AJAX
    10% C
    10% C#
    10% C++

    Norjimm Pvt Ltd is an e-commerce development company. They were established in 2016, and their services include E-Commerce Development and Mobile App Development.

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  • Flint Studio Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Digital Strategy
    15% Social Media Marketing +5
    15% UX/UI Design
    10% Content Marketing
    10% Custom Software Development
    10% Mobile App Development
    10% Search Engine Optimization

    Focus Areas

    20% JavaScript
    50% PHP
    20% XML +1
    10% SQL

    Flint Studio is a Digital Strategy company. Located in Johannesburg, South Africa, the team offers Digital Strategy and UX/UI Design.

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  • RIPEN Logotype

    Not yet reviewed

    $10,000+
    Undisclosed
    10 - 49
    Princeton, NJ

    Services provided

    10% Web Development
    20% Digital Strategy
    20% E-Commerce Development +4
    20% UX/UI Design
    10% Email Marketing
    10% Marketing Strategy
    10% Web Design

    Focus Areas

    20% JavaScript
    20% AJAX
    20% PHP +2
    20% Python
    20% XML

    RIPEN is an user experience design agency. They were established in 2003, and their services include UX/UI Design and Digital Strategy.

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  • Advent Interactive Logotype

    Advent Interactive

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +7
    10% IT Strategy Consulting
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

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

    Custom software development firm Advent Interactive was launched in 2011. Based in Karashi, Pakistan, the team specializes in Custom Software Development and UX/UI Design.

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  • The SPI Group LLC Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Fairfield, NJ

    Services provided

    15% Web Development
    25% Public Relations
    15% Branding +3
    15% Content Marketing
    15% Mobile App Development
    15% Search Engine Optimization

    Focus Areas

    15% JavaScript
    20% PHP
    20% SQL +3
    15% ASP
    15% C#
    15% XML

    Small public relations company The SPI Group LLC, is headquartered in Fairfield, New Jersey. Their services include Public Relations and Branding.

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  • Intuitive IT Pty Ltd Logotype

    Not yet reviewed

    $5,000+
    $150 - $199 / hr
    10 - 49
    Fitzroy, Australia

    Services provided

    15% Web Development
    15% Custom Software Development
    15% E-Commerce Development +5
    15% IT Managed Services
    10% Application Management & Support
    10% IT Strategy Consulting
    10% Mobile App Development
    10% Web Design

    Focus Areas

    15% JavaScript
    25% SQL
    15% ASP.NET +3
    15% C#
    15% HTML5
    15% PHP

    Intuitive IT Pty Ltd is an IT managed services company established in 2009. Their services include IT managed services and Custom Software Development.

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  • Junipero IT Solutions Pvt. Ltd Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Search Engine Optimization
    5% Affiliate Marketing +27
    5% Content Marketing
    5% Custom Software Development
    5% E-Commerce Development
    5% Email Marketing
    5% IT Managed Services
    5% Logo
    5% Mobile & App Marketing
    5% Pay Per Click
    5% Social Media Marketing
    5% UX/UI Design
    5% Web Design
    3% Mobile App Development
    2% Digital Strategy
    2% Print Design
    1% Advertising
    1% Architectural Design
    1% Branding
    1% Conversion Optimization
    1% Direct Marketing
    1% Graphic Design
    1% Market Research
    1% Marketing Strategy
    1% Other Application Development
    1% Other Digital Marketing
    1% Product Design
    1% Public Relations
    1% Wearable App Development

    Focus Areas

    20% JavaScript
    70% PHP
    10% XML

    Headquartered in Gurugram, India, Junipero IT Solutions Pvt. Ltd is a SEO agency. Founded in 2015, the team specializes in Search Engine Optimization and Web Development.

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  • p2 media GmbH & Co. KG Logotype

    Not yet reviewed

    $10,000+
    $150 - $199 / hr
    10 - 49
    Minden, Germany

    Services provided

    20% Web Development
    15% UX/UI Design
    10% Content Marketing +8
    10% Digital Strategy
    10% Mobile App Development
    10% Web Design
    5% Business Consulting
    5% Conversion Optimization
    5% E-Commerce Development
    5% Robotics Process Automation
    5% Search Engine Optimization

    Focus Areas

    10% JavaScript
    30% HTML5
    20% PHP +4
    10% AJAX
    10% SQL
    10% Typescript
    10% XML

    P2 media GmbH & Co. KG, a website development firm, is in Minden, Germany and Hamburg, Germany. They provide Web Development and UX/UI Design.

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  • Rezart Logotype

    Rezart

    Not yet reviewed

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

    Services provided

    20% Web Development
    25% Web Design
    20% Social Media Marketing +3
    15% Marketing Strategy
    10% Branding
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    40% HTML5
    30% PHP +1
    20% jquery

    Rezart, a web design agency, was launched in 2017. They focuses on Web Design and Social Media Marketing.

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  • Relevance Management Logotype

    Not yet reviewed

    $10,000+
    Undisclosed
    10 - 49
    București, Romania

    Services provided

    20% Web Development
    20% BI & Big Data Consulting & SI
    20% Custom Software Development +2
    20% Enterprise App Modernization
    20% IT Managed Services

    Focus Areas

    10% JavaScript
    55% SQL
    15% C# +3
    10% ASP.NET
    5% Java
    5% Python

    Relevance Management, a business intelligence company, offer BI & big data consulting & SI and IT managed services. They were established in 2004.

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  • SmartFinds Marketing Logotype

    Not yet reviewed

    $25,000+
    $150 - $199 / hr
    10 - 49
    Birmingham, MI

    Services provided

    10% Web Development
    20% Digital Strategy
    15% Content Marketing +6
    15% Conversion Optimization
    10% Social Media Marketing
    10% Video Marketing
    10% Web Design
    5% Market Research
    5% Video Production

    Focus Areas

    20% JavaScript
    20% HTML5
    15% Java +4
    15% PHP
    10% Python
    10% SQL
    10% XML

    SmartFinds Marketing is a Digital Strategy company in Birmingham, Michigan. They offer Digital Strategy and Content Marketing and were launched in 1987.

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  • Orange Label s.r.o. Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    Prague, Czech Republic

    Services provided

    15% Web Development
    30% UX/UI Design
    30% Web Design +2
    15% E-Commerce Development
    10% Mobile App Development

    Focus Areas

    15% JavaScript
    30% PHP
    20% Python +4
    15% HTML5
    10% SQL
    5% C
    5% jquery

    Located in Prague, Czech Republic, Orange Label s.r.o. Is a web design company. They provide Web Design and UX/UI Design and were established in 2001.

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  • Nolwenture Logotype

    Nolwenture

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% IT Staff Augmentation +2
    20% Mobile App Development
    20% UX/UI Design

    Focus Areas

    10% JavaScript
    15% Kotlin
    15% Typescript +12
    5% C#
    5% C++
    5% HTML5
    5% Java
    5% Objective C
    5% PHP
    5% Python
    5% Redux
    5% SQL
    5% Swift
    5% Visual Basic
    5% XML

    Nolwenture is an user experience design agency. They are in Joensuu, Finland. Their team focuses on UX/UI Design and IT staff augmentation.

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  • Omkar Software Pvt Ltd Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    50 - 249
    Bengaluru, India

    Services provided

    15% Web Development
    15% E-Commerce Development
    15% Mobile App Development +5
    15% Web Design
    10% CRM Consulting and SI
    10% Logo
    10% Other Application Development
    10% Search Engine Optimization

    Focus Areas

    10% JavaScript
    50% PHP
    10% AJAX +3
    10% Java
    10% Other programming & scripting languages
    10% XML

    Founded in 2007, Omkar Software Pvt Ltd is a midsize Bengaluru, India-based e-commerce development firm. Their services include E-Commerce Development and Mobile App Development.

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  • EGLogics Softech Private Limited Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    50 - 249
    Lancashire, England

    Services provided

    15% Web Development
    10% Custom Software Development
    10% E-Commerce Development +11
    10% Mobile App Development
    10% Web Design
    5% Content Marketing
    5% Digital Strategy
    5% Ecommerce Marketing
    5% Graphic Design
    5% Logo
    5% Pay Per Click
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design

    Focus Areas

    10% JavaScript
    30% PHP
    10% C +5
    10% Java
    10% Objective C
    10% Other programming & scripting languages
    10% Python
    10% Swift

    EGLogics Softech Private Limited is a web development firm. They are located in Lancashire, England and Noida, India, and their services include Web Development and Web Design.

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  • Paloma Logotype

    Not yet reviewed

    $50,000+
    $100 - $149 / hr
    50 - 249
    Darlinghurst, Australia

    Services provided

    10% Web Development
    25% Mobile App Development
    20% Product Design +4
    15% Custom Software Development
    15% UX/UI Design
    10% Low/No Code Development
    5% Enterprise App Modernization

    Focus Areas

    15% JavaScript
    40% Ruby
    25% Python +1
    20% Typescript

    Software development firm Paloma was established in 2014. The firm focuses on Custom Software Development and Mobile App Development, and is midsize.

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  • Tribal Worldwide Guatemala Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    50 - 249
    Ciudad de Guatemala, Guatemala

    Services provided

    15% Web Development
    15% Mobile App Development
    10% AI Agents +7
    10% Custom Software Development
    10% E-Commerce Development
    10% IT Staff Augmentation
    10% Staffing
    10% Web Design
    5% Low/No Code Development
    5% Product Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ColdFusion +7
    10% HTML5
    10% Java
    10% Other programming & scripting languages
    10% Python
    10% SQL
    10% XML
    10% jquery

    Tribal Worldwide Guatemala, a website development firm, offer Web Development and Mobile App Development. They were established in 2009.

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  • DigiLantern Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% Mobile App Development
    10% Custom Software Development +9
    10% E-Commerce Development
    9% Web Design
    7% Pay Per Click
    7% Search Engine Optimization
    7% Social Media Marketing
    5% Print Design
    5% Product Design
    5% UX/UI Design
    5% Video Production

    Focus Areas

    10% JavaScript
    10% AJAX
    10% Ember.js +9
    10% Kotlin
    10% PHP
    10% Python
    10% Redux
    10% SQL
    5% HTML5
    5% Swift
    5% Typescript
    5% jquery

    DigiLantern, a midsize website development firm, is based in Noida, India. Their services include Web Development and Mobile App Development.

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  • Itigai Technologies Logotype

    Itigai Technologies

    Not yet reviewed

    $10,000+
    < $25 / hr
    2 - 9

    Services provided

    20% Web Development
    20% Ecommerce Marketing
    20% Mobile App Development +3
    20% UX/UI Design
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    15% JavaScript
    15% Java
    15% PHP +4
    15% Python
    15% SQL
    15% Typescript
    10% Redux

    Itigai Technologies, a small UX company, is headquartered in Indore, India. Their services include UX/UI Design and Custom Software Development.

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  • Bitmischief Logotype

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    2 - 9
    Spokane, WA

    Services provided

    15% Web Development
    25% Other Application Development
    20% Mobile App Development +4
    10% AR/VR Development
    10% Custom Software Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    18% JavaScript
    22% SQL
    12% C# +5
    12% Go
    12% Rust
    12% Typescript
    6% Objective C
    6% Swift

    Founded in 2016, Bitmischief is an Other Application Development company. The firm focuses on Other Application Development and Mobile App Development, and is small.

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  • DevDec Logotype

    5.0 1 review
    $5,000+
    $50 - $99 / hr
    10 - 49
    Mississauga, Canada

    Services provided

    15% Web Development
    45% Mobile App Development
    15% Custom Software Development +2
    15% E-Commerce Development
    10% Web Design

    Focus Areas

    20% JavaScript
    30% Objective C
    30% PHP +1
    20% Typescript

    DevDec is a leading app development company in Mississauga, Ontario, specializing in crafting custom software solutions for businesses of all sizes. Our passionate team of experienced developers,

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  • rextertech Logotype

    5.0 1 review
    Undisclosed
    < $25 / hr
    10 - 49
    Rajkot, India

    Services provided

    10% Web Development
    10% Advertising
    10% Content Marketing +7
    10% Email Marketing
    10% Graphic Design
    10% Mobile App Development
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Video Production

    Focus Areas

    25% JavaScript
    25% HTML5
    25% Other programming & scripting languages +1
    25% PHP

    Our mission is provide best product for our client. Our customer satisfaction is our main target. We always try to improve the quality of our products by exploring innovative ideas.

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  • Broadway Web Services Logotype

    Broadway Web Services

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Mobile App Development +4
    15% Custom Software Development
    10% API Development
    10% Low/No Code Development
    5% Other Application Development

    Focus Areas

    15% JavaScript
    25% PHP
    15% Redux +9
    5% AJAX
    5% Elixir
    5% Ember.js
    5% HTML5
    5% Kotlin
    5% Other programming & scripting languages
    5% Typescript
    5% backbone.js
    5% jquery

    Broadway Web Services offers digital marketing, branding, and e-commerce solutions, including warehouse, customer, staff, product, inventory, and order management systems. Overall feedback indicates that the company excels in understanding client needs, timely delivery, and offering good value for their services, although there is a suggestion for a more updated office location.

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  • Northcloud Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% E-Commerce Development
    20% Application Testing +2
    15% Enterprise App Modernization
    15% Mobile App Development

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP.NET +7
    10% C#
    10% Java
    10% PHP
    10% Perl
    10% Python
    10% Ruby
    10% SQL

    Northcloud is an e-commerce development company. They are based in Toronto, Canada, and their services include E-Commerce Development and Web Development.

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  • C. S. Tech Info Solutions Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% E-Commerce Development
    25% Mobile App Development +1
    25% Web Design

    Focus Areas

    10% JavaScript
    30% ASP.NET
    30% SQL +3
    10% C++
    10% Swift
    10% XML

    C. S. Tech Info Solutions is a Noida, India-based e-commerce development company. The team focuses on E-Commerce Development and Mobile App Development.

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  • Appxone Private Limited Logotype

    Appxone Private Limited

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% Mobile App Development
    10% E-Commerce Development +11
    10% Graphic Design
    10% UX/UI Design
    5% Application Management & Support
    5% Application Testing
    5% Content Marketing
    5% Custom Software Development
    5% Logo
    5% Mobile & App Marketing
    5% Social Media Marketing
    5% Wearable App Development
    5% Web Design

    Focus Areas

    25% JavaScript
    25% Java
    25% PHP +1
    25% Swift

    Founded in 2011, Appxone Private Limited is an app development firm. Their team specializes in Mobile App Development and UX/UI Design.

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  • TWOIQ LLP Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    30% Custom Software Development
    20% Mobile App Development +3
    15% E-Commerce Development
    10% Web Design
    5% UX/UI Design

    Focus Areas

    15% JavaScript
    40% PHP
    20% Kotlin +2
    15% Java
    10% AJAX

    TWOIQ LLP is a software development firm launched in 2018. The small team specializes in Custom Software Development and Web Development.

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  • Heuristix Logotype

    Heuristix

    Not yet reviewed

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

    Services provided

    25% Web Development
    30% Search Engine Optimization
    20% UX/UI Design +2
    15% Mobile App Development
    10% Pay Per Click

    Focus Areas

    10% JavaScript
    40% PHP
    30% Ruby +2
    10% AJAX
    10% Swift

    Heuristix, a SEO company, was launched in 2012. The firm provides Search Engine Optimization and Web Development, and is small.

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  • Proitsw Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    10 - 49
    Vilnius, Lithuania

    Services provided

    25% Web Development
    40% Custom Software Development
    10% UX/UI Design +4
    10% Web Design
    5% Blockchain
    5% Business Consulting
    5% IT Strategy Consulting

    Focus Areas

    10% JavaScript
    55% Java
    15% SQL +4
    5% C++
    5% PHP
    5% Python
    5% XML

    Established in 2008, Proitsw is a custom software development firm. The team focuses on Custom Software Development and Web Development.

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  • Pinaack Solutions Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    30% Custom Software Development
    25% Mobile App Development +3
    10% Web Design
    5% Application Testing
    5% UX/UI Design

    Focus Areas

    10% JavaScript
    25% ASP.NET
    20% C# +5
    10% AJAX
    10% Java
    10% PHP
    10% SQL
    5% Visual Basic

    Pinaack Solutions is a software development company. They focus on Custom Software Development and Mobile App Development and are located in Udaipur, India and India.

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  • The Code Group Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Gqeberha, South Africa

    Services provided

    20% Web Development
    25% Custom Software Development
    20% Mobile App Development +5
    10% E-Commerce Development
    10% Enterprise App Modernization
    5% IT Managed Services
    5% IT Staff Augmentation
    5% IoT Development

    Focus Areas

    15% JavaScript
    20% C#
    20% SQL +4
    15% ASP.NET
    15% Java
    10% Swift
    5% Kotlin

    The Code Group is a software development company established in 2008. The agency specializes in Custom Software Development and Mobile App Development.

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  • TecManic Logotype

    TecManic

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Custom Software Development
    25% E-Commerce Development +1
    25% Mobile App Development

    Focus Areas

    10% JavaScript
    25% Objective C
    25% PHP +2
    25% Swift
    15% SQL

    TecManic is a small custom software development firm. Founded in 2016, the team offers Custom Software Development and E-Commerce Development.

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  • Accentus Consulting Private Limited Logotype

    Accentus Consulting Private Limited

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Custom Software Development
    25% IT Staff Augmentation +1
    25% IoT Development

    Focus Areas

    10% JavaScript
    25% PHP
    25% Python +2
    20% C
    20% C++

    Software development company Accentus Consulting Private Limited is headquartered in Kolkata, India. They offer Custom Software Development and IoT development and were established in 2012.

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  • Spider Asia Sdn Bhd Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    40% Mobile App Development
    20% Web Design +6
    5% CRM Consulting and SI
    5% Custom Software Development
    5% ERP Consulting and SI
    5% IT Strategy Consulting
    5% Other Application Development
    5% Wearable App Development

    Focus Areas

    25% JavaScript
    25% Other programming & scripting languages
    25% PHP +1
    25% Perl

    Application development company Spider Asia Sdn Bhd is located in Petaling Jaya, Malaysia. They focus on Mobile App Development and Web Design and were founded in 2000.

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  • Samp Technologies Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% E-Commerce Development
    15% Mobile App Development +10
    10% Other Application Development
    5% Conversion Optimization
    5% Digital Strategy
    5% Email Marketing
    5% Mobile & App Marketing
    5% Other Digital Marketing
    5% Pay Per Click
    5% Search Engine Optimization
    5% Social Media Marketing
    5% Wearable App Development

    Focus Areas

    20% JavaScript
    30% Python
    20% Redux

    Samp Technologies is a website development firm. Headquartered in Surat, India and Surat, India, the agency provides Web Development and Mobile App Development.

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  • On Demand App Solutions (White-label app solutions) Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile App Development
    15% E-Commerce Development +5
    10% Advertising
    10% Direct Marketing
    10% IT Strategy Consulting
    10% Social Media Marketing
    5% Search Engine Optimization

    Focus Areas

    15% JavaScript
    30% PHP
    20% Kotlin +2
    20% Swift
    15% Objective C

    On Demand App Solutions (White-label app solutions) is an Ahmedabad, India-based website development company. Their services include Web Development and Mobile App Development.

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  • ITclan BD Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    10% Custom Software Development
    10% Low/No Code Development +10
    10% Web Design
    7% E-Commerce Development
    7% Graphic Design
    6% UX/UI Design
    5% Application Management & Support
    5% Application Testing
    5% Ecommerce Marketing
    5% Mobile App Development
    5% Search Engine Optimization
    5% Social Media Marketing

    Focus Areas

    15% JavaScript
    15% Java
    15% Python +5
    15% SQL
    10% AJAX
    10% C#
    10% C++
    10% PHP

    ITclan BD is a software development firm. Based in Dhaka, Bangladesh, their team focuses on Custom Software Development and Web Development.

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  • NETKO., JSC Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% CRM Consulting and SI
    20% Cloud Consulting & SI +2
    20% E-Commerce Development
    20% Mobile App Development

    Focus Areas

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

    NETKO., JSC is a Hanoi, Vietnam-based cloud consulting & SI company. The team focuses on cloud consulting & SI and CRM consulting and SI.

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  • Invision Logotype

    Invision

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49

    Services provided

    10% Web Development
    10% Digital Strategy
    10% Search Engine Optimization +13
    10% Web Design
    5% Application Management & Support
    5% Cloud Consulting & SI
    5% Conversion Optimization
    5% E-Commerce Development
    5% Ecommerce Marketing
    5% Email Marketing
    5% Mobile App Development
    5% Pay Per Click
    5% Product Design
    5% Social Media Marketing
    5% UX/UI Design
    5% Video Production

    Focus Areas

    25% JavaScript
    55% PHP
    15% Typescript +1
    5% AJAX

    Invision is a Digital Strategy company. They are headquartered in Dubai, United Arab Emirates and have small team of experts. Their services include Digital Strategy and Search Engine Optimization.

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  • Oracle Digital Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Sharjah, United Arab Emirates

    Services provided

    10% Web Development
    10% AR/VR Development
    10% Custom Software Development +7
    10% Digital Strategy
    10% E-Commerce Development
    10% Logo
    10% Mobile App Development
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    25% JavaScript
    40% HTML5
    15% SQL +2
    10% Other programming & scripting languages
    10% PHP

    Oracle Digital is a Digital Strategy company in Sharjah, United Arab Emirates. They offer Digital Strategy and Social Media Marketing.

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  • Siblings Software Argentina Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% E-Commerce Development
    25% IT Staff Augmentation +2
    25% Mobile App Development
    10% Low/No Code Development

    Focus Areas

    20% JavaScript
    30% Python
    20% C# +2
    20% Java
    10% PHP

    Siblings Software Argentina, an IT staff augmentation company, focus on IT staff augmentation and Web Development. They were launched in 2017.

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  • Sixty13 Web Solutions Logotype

    Sixty13 Web Solutions

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Mobile App Development +2
    20% UX/UI Design
    20% Web Design

    Focus Areas

    15% JavaScript
    15% HTML5
    15% Java +5
    15% Other programming & scripting languages
    15% PHP
    15% SQL
    5% C++
    5% XML

    Sixty13 Web Solutions is a web design company. The firm is in Surat, India. Their services include Web Design and UX/UI Design.

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  • Duture Consulting Logotype

    Duture Consulting

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% IT Staff Augmentation
    20% Search Engine Optimization +6
    10% Application Testing
    10% CRM Consulting and SI
    10% Custom Software Development
    10% Low/No Code Development
    5% Account-Based Marketing
    5% Robotics Process Automation

    Focus Areas

    25% JavaScript
    50% Python
    25% PHP

    SEO agency Duture Consulting was founded in 2023. Headquartered in Hazel Grove, England and Indeevaram, India, the team offers Search Engine Optimization and CRM consulting and SI.

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  • Cozmotec Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile App Development
    15% API Development +4
    15% Custom Software Development
    10% AI Consulting
    10% AI Development
    10% Generative AI

    Focus Areas

    15% JavaScript
    20% PHP
    20% Python +3
    20% SQL
    15% Typescript
    10% Java

    Cozmotec, a small website development firm, is based in Swords, Ireland. Their services include Web Development and Mobile App Development.

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  • Webingo Infotech Solutions Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Branding
    15% Digital Strategy +4
    15% Mobile App Development
    10% Low/No Code Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    15% JavaScript
    25% SQL
    20% PHP +4
    10% C++
    10% HTML5
    10% Java
    10% jquery

    Webingo Infotech Solutions, a branding agency, was established in 2017. The team provides Branding and Web Design.

    Read more
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  • Super52 Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Ajman, United Arab Emirates

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% IT Managed Services +3
    20% IT Strategy Consulting
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    15% JavaScript
    25% Python
    20% ASP.NET +3
    20% HTML5
    15% SQL
    5% Other programming & scripting languages

    IT strategy consulting company Super52 was established in 2014. The team provides IT strategy consulting and cloud consulting & SI and is based in Ajman, United Arab Emirates.

    Read more
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  • Proxima Interactive Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    10 - 49
    Ljubljana, Slovenia

    Services provided

    20% Web Development
    20% API Development
    20% Blockchain +2
    20% Custom Software Development
    20% Mobile App Development

    Focus Areas

    15% JavaScript
    15% Typescript
    10% C# +6
    10% HTML5
    10% Objective C
    10% Redux
    10% SQL
    10% XML
    10% jquery

    Proxima Interactive is an app development company. Located in Ljubljana, Slovenia, the company was founded in 2007. Their services include Mobile App Development and Blockchain.

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  • DigitalOne Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% IT Staff Augmentation +2
    20% IT Strategy Consulting
    20% Mobile App Development

    Focus Areas

    15% JavaScript
    25% PHP
    25% Swift +2
    20% Python
    15% C#

    DigitalOne is an IT strategy consulting company. Their team is located in Paris, France and specializes in IT strategy consulting and IT staff augmentation.

    Read more
    View Profile
  • uSiS Technologies Private Limited Logotype

    uSiS Technologies Private Limited

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Custom Software Development
    25% Mobile App Development +1
    25% Web Design

    Focus Areas

    10% JavaScript
    15% C#
    15% PHP +8
    10% ASP.NET
    10% HTML5
    10% SQL
    10% jquery
    5% AJAX
    5% Other programming & scripting languages
    5% Python
    5% Typescript

    USiS Technologies Private Limited is a web design company. Founded in 2007, their team offers Web Design and Custom Software Development.

    Read more
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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 Brainhub
2 xfive
3 ImageX
4 The Software House
5 ATEAM SOFT SOLUTIONS
6 Airdev
7 Xmartlabs
8 Toptal
9 Softonix
10 INOXOFT
11 Lizard Global
12 PopArt Studio
13 GeekyAnts
14 SpdLoad
15 Techuz InfoWeb Pvt. Ltd.

List of the Top 15 JavaScript Development Companies

  1. Brainhub Logotype

    Brainhub

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

    Ability to deliver

    39.9/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

    50% Web Development
    70% JavaScript
    50% Other
    View Profile Visit Website
  2. xfive Logotype

    xfive

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

    Ability to deliver

    39.9/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

    70% Web Development
    50% JavaScript
    30% Other
    View Profile Visit Website
  3. ImageX Logotype

    ImageX

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

    Ability to deliver

    39.7/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    90% Web Development
    50% JavaScript
    10% Other
    View Profile Visit Website
  4. The Software House Logotype

    The Software House

    $10,000+
    $50 - $99 / hr
    50 - 249
    Gliwice, Poland

    Ability to deliver

    39.4/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    45% Web Development
    60% JavaScript
    55% Other
    View Profile Visit Website
  5. ATEAM SOFT SOLUTIONS Logotype

    ATEAM SOFT SOLUTIONS

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

    Ability to deliver

    37.7/40.0
    18.4/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

    50% Web Development
    50% JavaScript
    50% Other
    View Profile Visit Website
  6. Airdev Logotype

    Airdev

    $10,000+
    Undisclosed
    50 - 249
    San Francisco, CA

    Ability to deliver

    38.9/40.0
    19.6/20 Reviews
    9.6/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    40% Web Development
    50% JavaScript
    60% Other
    View Profile Visit Website
  7. Xmartlabs Logotype

    Xmartlabs

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

    Ability to deliver

    39.3/40.0
    19.8/20 Reviews
    10/10 Clients & Experience
    9.5/10 Market Presence

    Service focus

    50% Web Development
    35% JavaScript
    50% Other
    View Profile Visit Website
  8. Toptal Logotype

    Toptal

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

    Ability to deliver

    39.9/40.0
    20/20 Reviews
    9.9/10 Clients & Experience
    10/10 Market Presence

    Service focus

    15% Web Development
    25% JavaScript
    85% Other
    View Profile Visit Website
  9. Softonix Logotype

    Softonix

    $5,000+
    $25 - $49 / hr
    50 - 249
    L'viv, Ukraine

    Ability to deliver

    36.9/40.0
    18/20 Reviews
    10/10 Clients & Experience
    8.9/10 Market Presence

    Service focus

    70% Web Development
    50% JavaScript
    30% Other
    View Profile Visit Website
  10. INOXOFT Logotype

    INOXOFT

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

    Ability to deliver

    40/40.0
    20/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  11. Lizard Global Logotype

    Lizard Global

    $10,000+
    $50 - $99 / hr
    50 - 249
    Kuala Lumpur, Malaysia

    Ability to deliver

    39.3/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

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

    PopArt Studio

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

    Ability to deliver

    39.7/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    35% Web Development
    40% JavaScript
    65% Other
    View Profile Visit Website
  13. GeekyAnts Logotype

    GeekyAnts

    $10,000+
    $25 - $49 / hr
    250 - 999
    San Francisco, CA

    Ability to deliver

    39.9/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

    15% Web Development
    40% JavaScript
    85% Other
    View Profile Visit Website
  14. SpdLoad Logotype

    SpdLoad

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

    Ability to deliver

    36.8/40.0
    17/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    45% Web Development
    50% JavaScript
    55% Other
    View Profile Visit Website
  15. Techuz InfoWeb Pvt. Ltd. Logotype

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

    36.8/40.0
    17.2/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  16. HTMLPanda Logotype

    HTMLPanda

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

    Ability to deliver

    35.9/40.0
    16.2/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  17. Sigma Software Group Logotype

    Sigma Software Group

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

    Ability to deliver

    38.8/40.0
    19/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    21% Web Development
    18% JavaScript
    79% Other
    View Profile Visit Website
  18. Incora Logotype

    Incora

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

    Ability to deliver

    37.2/40.0
    18.2/20 Reviews
    10/10 Clients & Experience
    9/10 Market Presence

    Service focus

    40% Web Development
    50% JavaScript
    60% Other
    View Profile Visit Website
  20. Cleveroad Logotype

    Cleveroad

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

    Ability to deliver

    40/40.0
    20/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    30% Web Development
    15% JavaScript
    70% Other
    View Profile Visit Website
  21. Brainium Information Technologies Logotype

    Brainium Information Technologies

    $10,000+
    < $25 / hr
    250 - 999
    Kolkata, India

    Ability to deliver

    36.3/40.0
    19/20 Reviews
    9/10 Clients & Experience
    8.4/10 Market Presence

    Service focus

    35% Web Development
    30% JavaScript
    65% Other
    View Profile Visit Website
  22. WPWeb Infotech Logotype

    WPWeb Infotech

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

    Ability to deliver

    39.7/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    65% Web Development
    20% JavaScript
    35% Other
    View Profile Visit Website
  23. Experion Technologies Logotype

    Experion Technologies

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

    Ability to deliver

    36.9/40.0
    17.2/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    20% Web Development
    25% JavaScript
    80% Other
    View Profile Visit Website
  24. Human Made Logotype

    Human Made

    $50,000+
    $150 - $199 / hr
    50 - 249
    Matlock, England

    Ability to deliver

    38.2/40.0
    18.4/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    100% Web Development
    30% JavaScript
    View Profile Visit Website
  25. Probey Services Logotype

    Probey Services

    $1,000+
    < $25 / hr
    1,000 - 9,999
    Los Angeles, CA

    Ability to deliver

    36.9/40.0
    19.6/20 Reviews
    9.3/10 Clients & Experience
    8/10 Market Presence

    Service focus

    20% Web Development
    25% JavaScript
    80% Other
    View Profile Visit Website
  26. Blazity Logotype

    Blazity

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

    Ability to deliver

    37.8/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    9.2/10 Market Presence

    Service focus

    50% Web Development
    70% JavaScript
    50% Other
    View Profile Visit Website
  27. XWP Logotype

    XWP

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

    Ability to deliver

    35.9/40.0
    16.2/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  28. Vincit Logotype

    Vincit

    $50,000+
    $150 - $199 / hr
    250 - 999
    Irvine, CA

    Ability to deliver

    36.4/40.0
    16.4/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    30% Web Development
    30% JavaScript
    70% Other
    View Profile Visit Website
  29. PowerGate Software Logotype

    PowerGate Software

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

    Ability to deliver

    37.9/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

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

    Arcanys

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

    Ability to deliver

    38.1/40.0
    19.4/20 Reviews
    10/10 Clients & Experience
    8.7/10 Market Presence

    Service focus

    30% Web Development
    20% JavaScript
    70% Other
    View Profile Visit Website

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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