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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: May 19, 2026
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15 Leaders 15 Contenders

22,063 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Featured

    What are Featured Providers?

    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

    4.9 89 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

    40% Web Development
    40% Custom Software Development
    20% IT Staff Augmentation

    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 specializing in full-stack and custom website development. Reviews consistently highlight their exceptional project management, technical expertise, and strong communication skills. Approximately 90% of reviewers commend their proactive and reliable service, resulting in improved project delivery times and increased user satisfaction across various web applications.

    See all 89 projects

    Reviews mention Easy to work with

    The feedback regarding the sentiment 'Easy to work with' is overwhelmingly positive. Clients have praised Digis for their responsiveness and professionalism, noting that they are 'very responsive to client needs' and 'easy to work with.' One client highlighted the quick onboarding process facilitated by their account manager, while another appreciated their proactive approach in seeking feedback to enhance collaboration. Overall, the sentiment reflects a strong alignment with client expectations and satisfaction.
    • Software Development for Tech Job Matching Company
      5.0 Mar 31, 2022

      I think they have been an amazing addition to our team. Very hard working and easy to get along with. I think they are super hard working, professional, friendly and delivers on time. We are very happy with Digis.

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    • E-Commerce Dev for Digital Commerce Agency
      5.0 Mar 23, 2022

      Digis was a business-oriented team. It was easy to find a common language. Always ready to help.

      Read Full Review
    • Software Development for Fintech Company
      3.5 Sep 9, 2021

      They were very professional and easy to work with. They ask for feedback often, making strides to incorporate feedback in our day-to-day collaboration.

      Read Full Review
    • Web Dev for Job Advertising Platform
      5.0 Jun 30, 2017

      I like their working style and project management. Do IT has handled this from a business point of view, which meant that I didn’t have to be extremely tech-savvy to work with them.

      Read Full Review
    • Recruitment Process Outsourcing for Wellness & Fitness Co
      5.0 Jan 22, 2026

      They're an excellent partner — easy to work with and very responsive to client needs. We communicate via virtual meetings, emails, and messaging apps.

      Read Full Review
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    3 of 3 reviews are 5 stars
    2 new reviews for Web Development services
    $10,000 – $49,000 avg. project cost

    Reviewed 3 times in the past 6 months

    In the last six months, clients have expressed high satisfaction with Digis, a Fiverr company (NYSE: FVRR), highlighting their impressive responsiveness and quality of development. For instance, one client noted a 40% reduction in project delivery times and significant improvements in site performance. Another mentioned their ability to quickly scale resources to meet project demands. Overall, the sentiment is overwhelmingly positive, with clients appreciating the team's integration and collaborative approach, leaving little room for improvement.
    Read 3 Recent Reviews

    Industry Experience

    Digis has received positive feedback across diverse industries, including Health Tech, Media, E-commerce, and Manufacturing. Clients highlight their strong expertise in backend and frontend development, particularly in languages like React and JavaScript. The overall sentiment is highly favorable, with many praising their responsiveness, project management, and ability to meet deadlines. Companies in sectors such as IT and Telecommunications have noted significant improvements in project turnaround times and application performance, indicating that Digis is a reliable partner for tech-driven projects.

    Read All Reviews

    Select Industry to see insights

    Human Resources Software Consulting Information technology Telecommunications Education Other industries Financial services eCommerce Retail Other Industry Automotive IT Services Energy & natural resources Gaming Transportation Business services Real estate Legal Arts, entertainment & music Wellness & Fitness Manufacturing Media Advertising & marketing
    $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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  • Web Solutions Kenya Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    2 - 9
    Mombasa, Kenya

    Services provided

    30% Web Development
    30% E-Commerce Development
    20% Search Engine Optimization +1
    20% Web Design

    Focus Areas

    30% JavaScript
    40% PHP
    30% SQL

    Web Solutions Kenya is an e-commerce development firm. Their small team is in Mombasa, Kenya. Their team focuses on E-Commerce Development and Web Development.

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  • Digital Geeks Logotype

    Not yet reviewed

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

    Services provided

    50% Web Development
    40% E-Commerce Development
    5% Mobile App Development +1
    5% Search Engine Optimization

    Focus Areas

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

    Web development company Digital Geeks is headquartered in Indore, India and Brooklyn, New York. They provide Web Development and E-Commerce Development and were established in 2018.

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  • Terapods Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    50% Branding
    30% Logo +1
    10% Web Design

    Focus Areas

    50% JavaScript
    50% Java

    Terapods is a branding firm. They offer Branding and Logo and were established in 2018. The firm is located in Kasavanahalli, India.

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  • Great Expectations s.r.o. Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    Praha, Czech Republic

    Services provided

    30% Web Development
    30% Web Design
    20% E-Commerce Development +1
    20% Graphic Design

    Focus Areas

    30% JavaScript
    70% PHP

    Great Expectations s.r.o., a web design company, is based in Praha, Czech Republic. The team provides Web Design and Web Development.

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  • Future Pixel Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    Melbourne, Australia

    Services provided

    30% Web Development
    30% UX/UI Design
    10% Custom Software Development +3
    10% E-Commerce Development
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    30% JavaScript
    15% HTML5
    10% PHP +9
    5% AJAX
    5% ASP.NET
    5% Go
    5% Other programming & scripting languages
    5% Python
    5% Redux
    5% Ruby
    5% SQL
    5% Typescript

    Future Pixel is an user experience company. The Melbourne, Australia-based company was founded in 2012. Their team offers UX/UI Design and Web Development.

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  • Dcoderr Logotype

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    2 - 9
    Brampton, Canada

    Services provided

    10% Web Development
    15% AI Consulting
    15% E-Commerce Development +5
    15% IT Managed Services
    15% IT Strategy Consulting
    10% Custom Software Development
    10% Low/No Code Development
    10% Mobile App Development

    Focus Areas

    65% JavaScript
    35% Typescript

    Established in 2023, Dcoderr is an IT strategy consulting company. The team provides IT strategy consulting and IT managed services.

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  • CODERHINO Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9
    Kielce, Poland

    Services provided

    40% Web Development
    40% E-Commerce Development
    20% Web Design

    Focus Areas

    20% JavaScript
    80% PHP

    CODERHINO is a web development firm based in Kielce, Poland. They specialize in Web Development and E-Commerce Development.

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  • IQL Technologies Logotype

    Not yet reviewed

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

    Services provided

    50% Web Development
    20% Web Design
    10% Low/No Code Development +4
    5% Graphic Design
    5% Mobile App Development
    5% Print Design
    5% Search Engine Optimization

    Focus Areas

    10% JavaScript
    30% PHP
    20% HTML5 +5
    10% AJAX
    10% Python
    10% SQL
    5% Ruby
    5% Rust

    IQL Technologies is a web development company. The firm is located in New Delhi, India. Their services include Web Development and Web Design.

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  • Tryqit Logotype

    Tryqit

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    2 - 9

    Services provided

    50% Web Development
    30% Web Design
    20% Mobile App Development

    Focus Areas

    10% JavaScript
    40% C#
    30% ASP.NET +2
    10% HTML5
    10% SQL

    Tryqit , a web development company, provides Web Development and Web Design. The company is based in Sandton, South Africa.

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  • Flo3 Digital Logotype

    Flo3 Digital

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% AI Development
    15% Cloud Consulting & SI +5
    15% E-Commerce Development
    15% Mobile App Development
    10% Custom Software Development
    10% Low/No Code Development
    10% UX/UI Design

    Focus Areas

    100% JavaScript

    Cloud consulting & SI company Flo3 Digital provides cloud consulting & SI and Mobile App Development. They were launched in 2023.

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  • Out2Sol Global Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Mobile App Development +7
    10% AR/VR Development
    5% AI Agents
    5% AI Development
    5% BI & Big Data Consulting & SI
    5% Cybersecurity
    5% ERP Consulting and SI
    5% IT Strategy Consulting

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP.NET +10
    10% C++
    10% Java
    10% Kotlin
    10% SQL
    5% C#
    5% HTML5
    5% Other programming & scripting languages
    5% PHP
    5% Python
    5% XML

    Launched in 2015, Out2Sol Global is a midsize web development firm based in Jeddah, Saudi Arabia. Their team focuses on Web Development and Mobile App Development.

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  • Creaviso Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    2 - 9
    Warszawa, Poland

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Logo +3
    20% UX/UI Design
    10% Low/No Code Development
    10% Web Design

    Focus Areas

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

    Creaviso is an UX design company. Established in 2017, the firm is in Warszawa, Poland. Their services include UX/UI Design and Logo.

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  • Orcas Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    2 - 9
    Stralsund, Germany

    Services provided

    50% Web Development
    25% UX/UI Design
    25% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% C++ +7
    10% HTML5
    10% Java
    10% PHP
    10% SQL
    10% Typescript
    10% XML
    10% jquery

    Orcas is a web development firm. Established in 2013, the team specializes in Web Development and Web Design. The firm is headquartered in Stralsund, Germany.

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  • Genesyx Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    40% JavaScript
    30% Python
    20% Other programming & scripting languages +1
    10% PHP

    IT strategy consulting company Genesyx is in Wuppertal, Germany. They focus on IT strategy consulting and Custom Software Development and were founded in 2025.

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  • Empire State SEO Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    New York, NY

    Services provided

    10% Web Development
    15% Search Engine Optimization
    10% Branding +7
    10% Graphic Design
    10% Marketing Strategy
    10% Public Relations
    10% Social Media Marketing
    10% Video Marketing
    10% Web Design
    5% Print Design

    Focus Areas

    50% JavaScript
    50% HTML5

    SEO agency Empire State SEO was founded in 2026. Headquartered in New York, New York, the team focuses on Search Engine Optimization and Web Development.

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  • CoReCo Technologies Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    50 - 249
    Pune, India

    Services provided

    10% Web Development
    20% Custom Software Development
    10% AI Development +6
    10% Application Testing
    10% BI & Big Data Consulting & SI
    10% Cloud Consulting & SI
    10% IT Staff Augmentation
    10% IT Strategy Consulting
    10% Mobile App Development

    Focus Areas

    15% JavaScript
    25% Python
    15% HTML5 +3
    15% Java
    15% Other programming & scripting languages
    15% SQL

    CoReCo Technologies is a software development firm. The company is based in Pune, India. Their services include Custom Software Development and IT strategy consulting.

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  • Verticalsols LLC Logotype

    Verticalsols LLC

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% Custom Software Development
    15% AI Development +9
    5% API Development
    5% Content Marketing
    5% Graphic Design
    5% IoT Development
    5% Mobile App Development
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design
    5% Web Design

    Focus Areas

    15% JavaScript
    20% Python
    10% SQL +9
    10% backbone.js
    10% jquery
    5% ASP.NET
    5% C
    5% C#
    5% C++
    5% HTML5
    5% Kotlin
    5% PHP

    Verticalsols LLC provides digital marketing services, SEO, and technical problem-solving solutions. The reviews highlight the company's strengths in effective communication, responsiveness, and delivering services on time. Clients commend Verticalsols LLC for its hard work, responsibility, and knowledgeability, appreciating the value offered for cost-effective pricing.

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  • Domi Websites Logotype

    Domi Websites

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    Freelancer

    Services provided

    35% Web Development
    25% Custom Software Development
    25% Web Design +1
    15% Search Engine Optimization

    Focus Areas

    45% JavaScript
    30% Typescript
    15% SQL +1
    10% HTML5

    Located in St. Louis, Missouri, Domi Websites is a web development firm. They offer Web Development and Web Design.

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    $1,500 Best for local service businesses launching fast. $3,500 Best for growing businesses needing SEO structure $7,500 Best for businesses needing booking systems, integ

    High-Performance Business Website

    Modern, high-performance websites built for small businesses ready to grow. This package focuses on speed, SEO structure, and conversion-driven design to help you generate leads and build a scalable online presence.
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  • JAPCO Logotype

    Not yet reviewed

    $10,000+
    < $25 / hr
    10 - 49
    London, England

    Services provided

    20% Web Development
    30% Custom Software Development
    25% Mobile App Development +2
    15% Web Design
    10% AR/VR Development

    Focus Areas

    16% JavaScript
    11% PHP
    11% Python +9
    11% SQL
    11% Swift
    10% Kotlin
    5% AJAX
    5% ASP.NET
    5% C#
    5% C++
    5% Java
    5% Redux

    JAPCO is a software development company launched in 2021. Their services include Custom Software Development and Mobile App Development.

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  • Digital Otters Logotype

    4.5 2 reviews
    $5,000+
    < $25 / hr
    50 - 249
    Austin, TX

    Services provided

    15% Web Development
    15% Digital Strategy
    15% Low/No Code Development +4
    15% Pay Per Click
    15% Search Engine Optimization
    15% Social Media Marketing
    10% Web Design

    Focus Areas

    20% JavaScript
    20% Java
    15% PHP +3
    15% Perl
    15% Python
    15% jquery

    Digital Otters offers comprehensive digital marketing services, including social media management, website development, SEO, PPC campaigns, and email marketing. Reviewers consistently highlight their data-driven approach, strategic acumen, and effective project management, which have led to significant improvements in brand visibility, engagement, and sales. Clients particularly appreciate their creativity, responsiveness, and ability to deliver measurable results.

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  • Bitforce Solutions Logotype

    Bitforce Solutions

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

    Services provided

    15% Web Development
    25% Mobile App Development
    20% Customer Service Outsourcing +3
    20% UX/UI Design
    10% Graphic Design
    10% Social Media Marketing

    Focus Areas

    30% JavaScript
    25% Java
    15% Typescript +3
    10% Python
    10% Ruby
    10% Swift

    Founded in 2016, with a vision to empower businesses through intelligent digital solutions, BitForce Solutions began its journey with a clear mission — to become a trusted partner in web

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  • INCREMENT TECHNOLOGIES INC. Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49
    Cebu City, Philippines

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Mobile App Development +4
    15% Application Management & Support
    15% Application Testing
    5% Blockchain
    5% IoT Development

    Focus Areas

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

    INCREMENT TECHNOLOGIES INC. Is a website development firm. The agency is headquartered in Cebu City, Philippines. Their team focuses on Web Development and Mobile App Development.

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  • Bootstrap Creative Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    2 - 9
    Clinton Township, MI

    Services provided

    20% Web Development
    20% Web Design
    15% Pay Per Click +4
    15% Search Engine Optimization
    10% CRM Consulting and SI
    10% Email Marketing
    10% Graphic Design

    Focus Areas

    25% JavaScript
    50% Other programming & scripting languages
    25% HTML5

    Bootstrap Creative is a web development firm. The Clinton Township, Michigan-based firm was launched in 2016. Their team specializes in Web Development and Web Design.

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  • Deft Digital Logotype

    Deft Digital

    5.0 2 reviews
    $1,000+
    $50 - $99 / hr
    50 - 249

    Services provided

    10% Web Development
    30% Web Design
    20% E-Commerce Development +3
    20% UX/UI Design
    10% Low/No Code Development
    10% Product Design

    Focus Areas

    25% JavaScript
    35% PHP
    20% Ember.js +1
    20% Java

    Deft Digital specializes in digital marketing, brand presence establishment, and creative design services, including landing page design and social media management. Reviews highlight the company's impressive design capabilities, effective communication, and agile project management. Clients appreciate their distinct use of 3D graphics and their commitment to going above and beyond, resulting in enhanced brand messaging and improved SEO rankings.

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  • C-Metric Solutions Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    15% Mobile App Development +5
    10% AI Development
    10% Cloud Consulting & SI
    10% IoT Development
    10% Web Design
    5% E-Commerce Development

    Focus Areas

    15% JavaScript
    25% Other programming & scripting languages
    15% Java +3
    15% Kotlin
    15% Objective C
    15% Swift

    C-Metric Solutions is a custom software development company in Moorestown, New Jersey and Gandhinagar, India. Their services include Custom Software Development and Web Development.

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  • Alpas Technology Pvt. Ltd. Logotype

    Not yet reviewed

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

    Services provided

    12% Web Development
    12% E-Commerce Development
    12% Mobile App Development +14
    10% Web Design
    8% UX/UI Design
    6% Search Engine Optimization
    5% Digital Strategy
    5% Graphic Design
    5% Social Media Marketing
    4% Content Marketing
    4% Custom Software Development
    4% IT Strategy Consulting
    4% Logo
    3% Product Design
    2% Branding
    2% Market Research
    2% Marketing Strategy

    Focus Areas

    10% JavaScript
    30% PHP
    30% Swift +2
    20% Objective C
    10% Kotlin

    Alpas Technology Pvt. Ltd. Is a web development firm. The Lalitpur, Nepal-based team offers Web Development and Mobile App Development.

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  • Openform Logotype

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

    Services provided

    25% Web Development
    25% Mobile App Development
    25% UX/UI Design +1
    25% Web Design

    Focus Areas

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

    Personal approach, professionalism and enthusiasm for the job is main factor of why our circle of friends is constantly expanding. We're familiar the dominant trends in the industry, but against

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  • Absolute Agency Logotype

    Not yet reviewed

    $10,000+
    Undisclosed
    10 - 49
    Horwich, England

    Services provided

    20% Web Development
    25% Branding
    25% Web Design +2
    20% Video Production
    10% Digital Strategy

    Focus Areas

    25% JavaScript
    30% PHP
    25% Other programming & scripting languages +1
    20% SQL

    Absolute Agency is a branding firm established in 1999. The team specializes in Branding and Web Design and is located in Horwich, England.

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  • Web Design Company in Dubai - Carmatec Global Logotype

    Web Design Company in Dubai - Carmatec Global

    Not yet reviewed

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

    Services provided

    25% Web Development
    20% Web Design
    10% Custom Software Development +5
    10% E-Commerce Development
    10% IoT Development
    10% Low/No Code Development
    10% Mobile App Development
    5% Digital Strategy

    Focus Areas

    20% JavaScript
    20% PHP
    20% Ruby +3
    20% SQL
    10% Kotlin
    10% Swift

    Web Design Company in Dubai - Carmatec Global is a Dubai, United Arab Emirates-based web design agency. They focus on Web Design and Web Development.

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  • Studio Kipo Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49
    Sofia, Bulgaria

    Services provided

    15% Web Development
    20% Search Engine Optimization
    20% UX/UI Design +3
    15% E-Commerce Development
    15% Mobile App Development
    15% Web Design

    Focus Areas

    30% JavaScript
    30% PHP
    20% HTML5 +1
    20% Typescript

    Studio Kipo is a SEO agency. The Sofia, Bulgaria-based agency was established in 2007. Their services include Search Engine Optimization and UX/UI Design.

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  • Bright Labs Logotype

    Not yet reviewed

    $25,000+
    $150 - $199 / hr
    10 - 49
    Melbourne, Australia

    Services provided

    25% Web Development
    20% Search Engine Optimization
    20% UX/UI Design +2
    20% Web Design
    15% Digital Strategy

    Focus Areas

    20% JavaScript
    60% PHP
    20% SQL

    Bright Labs is a Melbourne, Australia-based web development company. They provide Web Development and Search Engine Optimization and were launched in 2004.

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  • ENERGIEDIN Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Casablanca, Morocco

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Pay Per Click +2
    20% Social Media Marketing
    20% Video Production

    Focus Areas

    25% JavaScript
    25% HTML5
    25% Java +1
    25% PHP

    ENERGIEDIN is a social media marketing agency founded in 2012. Their services include Social Media Marketing and Pay Per Click.

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  • ONBAST Logotype

    ONBAST

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Search Engine Optimization
    10% AI Development +7
    10% Custom Software Development
    10% Digital Strategy
    10% Generative AI
    10% Low/No Code Development
    10% Web Design
    5% AI Consulting
    5% Market Research

    Focus Areas

    30% JavaScript
    35% SQL
    20% HTML5 +1
    15% XML

    SEO services firm ONBAST is based in Revilla de Camargo, Spain. They specialize in Search Engine Optimization and Digital Strategy.

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  • coolfm-designs Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    Freelancer
    Akungba, Nigeria

    Services provided

    70% Web Development
    20% Web Design
    10% Graphic Design

    Focus Areas

    15% JavaScript
    30% HTML5
    25% PHP +2
    15% AJAX
    15% SQL

    Coolfm-designs is a web development company. Headquartered in Akungba, Nigeria, their team focuses on Web Development and Web Design.

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  • Galago Logotype

    5.0 2 reviews
    $10,000+
    $150 - $199 / hr
    2 - 9
    Phoenix, AZ

    Services provided

    15% Web Development
    35% Mobile App Development
    15% AI Development +3
    15% Web Design
    10% Custom Software Development
    10% UX/UI Design

    Focus Areas

    20% JavaScript
    20% Python
    15% Other programming & scripting languages +6
    10% HTML5
    10% Ruby
    10% Typescript
    5% Objective C
    5% SQL
    5% Swift

    Galago specializes in Website Development and app development, providing seamless and custom online development solutions. Their clients commend their expeditious and effective delivery, dedication to client goals, and responsive project management. Overall, feedback highlights Galago's strong alignment with client values and excellent service execution.

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  • Bizaffix Logotype

    Bizaffix

    5.0 3 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    15% Web Development
    30% Cloud Consulting & SI
    15% AI Development +3
    15% Mobile App Development
    15% Product Design
    10% Custom Software Development

    Focus Areas

    15% JavaScript
    15% HTML5
    15% Java +5
    15% Other programming & scripting languages
    15% PHP
    15% Typescript
    5% Python
    5% SQL

    Bizaffix specializes in Website Development, Web Design, and other online development services. Reviews highlight their strong project management, timely delivery, and tailored solutions meeting specific client needs. Clients appreciate their expertise, reasonable pricing, and dedication to customer satisfaction, although expanding their team for faster delivery was suggested.

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  • Ottr Technology Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    30% UX/UI Design
    20% Mobile App Development +3
    20% Product Design
    5% Graphic Design
    5% Logo

    Focus Areas

    10% JavaScript
    60% Typescript
    30% SQL

    Ottr Technology is an UX design agency. They were founded in 2021 and provide UX/UI Design and Web Development.

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  • Sette Technology Solutions Logotype

    Sette Technology Solutions

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    2 - 9

    Services provided

    20% Web Development
    35% Custom Software Development
    30% Mobile App Development +2
    10% IoT Development
    5% Enterprise App Modernization

    Focus Areas

    20% JavaScript
    30% ASP.NET
    30% C# +3
    10% Typescript
    5% Other programming & scripting languages
    5% Python

    Custom software development company Sette Technology Solutions was founded in 2023. The small team offers Custom Software Development and Mobile App Development.

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  • Head Quarters Design Logotype

    Head Quarters Design

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    Freelancer

    Services provided

    10% Web Development
    60% Web Design
    10% Print Design +4
    5% Branding
    5% E-Commerce Development
    5% Email Marketing
    5% Search Engine Optimization

    Focus Areas

    100% JavaScript

    Head Quarters Design is a web design agency. The company is located in Bethlehem, South Africa. Their services include Web Design and Print Design.

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  • Extreme Marketing Company Ltd Logotype

    Extreme Marketing Company Ltd

    Not yet reviewed

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

    Services provided

    40% Web Development
    30% Search Engine Optimization
    10% Advertising +2
    10% Graphic Design
    10% Social Media Marketing

    Focus Areas

    10% JavaScript
    20% SQL
    20% Visual Basic +5
    10% C++
    10% HTML5
    10% PHP
    10% Python
    10% XML

    Established in 2017, Extreme Marketing Company Ltd is a web development firm. Their services include Web Development and Search Engine Optimization.

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  • DIGITAL RAI PRIVATE LIMITED Logotype

    5.0 2 reviews
    $1,000+
    < $25 / hr
    2 - 9
    New Delhi, India

    Services provided

    30% Web Development
    25% Pay Per Click
    25% Search Engine Optimization +2
    10% Low/No Code Development
    10% Social Media Marketing

    Focus Areas

    35% JavaScript
    20% C
    20% Java +2
    15% XML
    10% HTML5

    DIGITAL RAI PRIVATE LIMITED offers digital marketing services, with a focus on SEO. Feedback highlights their good value for cost and responsible project management. Clients appreciate the impressive results in SEO services, indicating a reliable and effective approach to digital marketing objectives.

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  • Krinfud Digitals Logotype

    Krinfud Digitals

    5.0 1 review
    $1,000+
    $50 - $99 / hr
    50 - 249

    Services provided

    10% Web Development
    20% Branding
    20% Social Media Marketing +4
    15% Pay Per Click
    15% Search Engine Optimization
    10% AR/VR Development
    10% Business Consulting

    Focus Areas

    11% JavaScript
    17% ASP.NET
    11% C++ +6
    11% Ember.js
    11% Other programming & scripting languages
    11% PHP
    11% Python
    11% Visual Basic
    6% SQL

    Krinfud Digitals specializes in crafting marketing strategies and executing digital campaigns. Reviews highlight their impressive quality of work, punctuality, and effective communication. Clients appreciate their young and approachable team, noting progress in their marketing objectives.

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  • Robust Devs Logotype

    5.0 1 review
    $5,000+
    $25 - $49 / hr
    10 - 49
    Lahore, Pakistan

    Services provided

    25% Web Development
    25% E-Commerce Development
    15% API Development +3
    15% Custom Software Development
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    25% JavaScript
    30% PHP
    15% Python +4
    10% HTML5
    10% Typescript
    5% AJAX
    5% Other programming & scripting languages

    Robust Agency specializes in Website Development and Web Design, offering custom solutions like Shopify store creation with premium themes and features. The reviews highlight their effective communication, quick response times, and professional project management. Clients appreciate their expertise in Online Development and their ability to meet deadlines while delivering high-quality, user-friendly websites.

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  • Coal Agency Logotype

    5.0 2 reviews
    $5,000+
    $50 - $99 / hr
    2 - 9
    Rīga, Latvia

    Services provided

    30% Web Development
    20% UX/UI Design
    15% Branding +3
    15% Product Design
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    25% JavaScript
    45% PHP
    10% AJAX +3
    10% SQL
    5% C++
    5% Java

    At our agency, we help businesses succeed in the digital world by combining cultural understanding, empathy, and thorough research with aesthetically driven design. We work with brands to improve

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  • WinSoft Logotype

    WinSoft

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

    Services provided

    30% Web Development
    25% API Development
    20% Mobile App Development +2
    15% UX/UI Design
    10% Application Management & Support

    Focus Areas

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

    WinSoft specializes in Website Development and Web Design, offering comprehensive services such as UI/UX and API development. The reviews highlight their technical expertise, effective project management, and ability to deliver user-friendly solutions ahead of schedule. Clients appreciate their responsiveness and professional demeanor, recommending them for web app and design needs.

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  • Rising Formula Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Digital Strategy
    20% E-Commerce Development +2
    20% Search Engine Optimization
    20% Social Media Marketing

    Focus Areas

    35% JavaScript
    35% Typescript
    30% Python

    Launched in 2023, Rising Formula is a Digital Strategy company. Their team provides Digital Strategy and Social Media Marketing.

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  • CBBM STUDIO Logotype

    CBBM STUDIO

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

    Services provided

    20% Web Development
    60% UX/UI Design
    20% Mobile App Development

    Focus Areas

    13% JavaScript
    25% Ruby
    23% SQL +3
    13% ASP.NET
    13% C#
    13% Typescript

    CBBM STUDIO specializes in Website Development, Web Design, and Web Programming, providing solutions for both front-end and back-end development, including mobile projects. Reviews highlight their ability to deliver outstanding, user-friendly interfaces and effectively solve UX challenges. Clients commend their project management skills, timely delivery, and alignment with company values.

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  • CodenVibe Logotype

    CodenVibe

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% API Development
    20% Custom Software Development +2
    20% E-Commerce Development
    20% UX/UI Design

    Focus Areas

    15% JavaScript
    55% Python
    20% HTML5 +1
    10% Typescript

    Launched in 2024, CodenVibe is a small user experience design agency. Their services include UX/UI Design and Custom Software Development.

    Read more
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  • Nagorik Technologies Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    50 - 249
    Dhaka, Bangladesh

    Services provided

    10% Web Development
    15% AI Development
    15% Blockchain +5
    15% Custom Software Development
    15% Mobile App Development
    10% AI Agents
    10% Blockchain Marketing
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    15% C++
    15% Java +7
    10% HTML5
    10% PHP
    10% Rust
    10% Swift
    10% UnrealScript
    5% Kotlin
    5% Objective C

    Nagorik Technologies, a custom software development firm, focus on Custom Software Development and Mobile App Development. They were established in 2014.

    Read more
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  • Zyneto Global Technologies Logotype

    Zyneto Global Technologies

    5.0 3 reviews
    $10,000+
    $50 - $99 / hr
    50 - 249

    Services provided

    25% Web Development
    20% Custom Software Development
    15% Mobile App Development +4
    10% API Development
    10% DevOps Managed Services
    10% Generative AI
    10% Other Design

    Focus Areas

    10% JavaScript
    40% Python
    20% AJAX +2
    20% SQL
    10% Typescript

    Zyneto Global Technologies PVT LTD specializes in Website Development, Web Design, and data-related services such as Web Scraping and Data Cleaning. The overall feedback highlights their innovative solutions, commitment to user-friendly experiences, and efficient project management, with consistent, timely deliveries that met the client's goals and expectations.

    See all 3 projects
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At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.

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.

Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.

We evaluate service providers using a structured methodology that combines:

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

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Ability to deliver
Focus
Clutch Leaders Matrix

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

1 ImageX
2 xfive
3 Brainhub
4 The Software House
5 Xmartlabs
6 Airdev
7 WPWeb Infotech
8 Lizard Global
9 PopArt Studio
10 Softonix
11 GeekyAnts
12 INOXOFT
13 Scopic
14 HTMLPanda
15 Vention

List of the Top 15 JavaScript Development Companies

  1. 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
  2. xfive Logotype

    xfive

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

    Ability to deliver

    39.3/40.0
    19.4/20 Reviews
    10/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

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

    Brainhub

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

    Ability to deliver

    39.3/40.0
    19.4/20 Reviews
    10/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

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

    The Software House

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

    Ability to deliver

    39.8/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

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

    Xmartlabs

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

    Ability to deliver

    39.5/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.5/10 Market Presence

    Service focus

    50% Web Development
    35% JavaScript
    50% Other
    View Profile Visit Website
  6. Airdev Logotype

    Airdev

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

    Ability to deliver

    38.5/40.0
    19.2/20 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. WPWeb Infotech Logotype

    WPWeb Infotech

    $25,000+
    < $25 / hr
    250 - 999
    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
  8. 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
  9. 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
  10. Softonix Logotype

    Softonix

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

    Ability to deliver

    36.3/40.0
    17.4/20 Reviews
    10/10 Clients & Experience
    8.9/10 Market Presence

    Service focus

    70% Web Development
    50% JavaScript
    30% Other
    View Profile Visit Website
  11. 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
  12. INOXOFT Logotype

    INOXOFT

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

    Ability to deliver

    39.6/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  13. Scopic Logotype

    Scopic

    $10,000+
    $50 - $99 / hr
    250 - 999
    Marlborough, MA

    Ability to deliver

    39.3/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    25% Web Development
    25% JavaScript
    75% Other
    View Profile Visit Website
  14. 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
  16. SpdLoad Logotype

    SpdLoad

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

    Ability to deliver

    36.4/40.0
    16.6/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

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

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

    36.3/40.0
    16.6/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  18. PowerGate Software Logotype

    PowerGate Software

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

    Ability to deliver

    38.7/40.0
    19.2/20 Reviews
    10/10 Clients & Experience
    9.5/10 Market Presence

    Service focus

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

    Incora

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

    Ability to deliver

    37/40.0
    18/20 Reviews
    10/10 Clients & Experience
    9/10 Market Presence

    Service focus

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

    Toptal

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

    Ability to deliver

    38.3/40.0
    18.4/20 Reviews
    9.9/10 Clients & Experience
    10/10 Market Presence

    Service focus

    15% Web Development
    25% JavaScript
    85% Other
    View Profile Visit Website
  21. Arcanys Logotype

    Arcanys

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

    Ability to deliver

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

    Service focus

    30% Web Development
    20% JavaScript
    70% Other
    View Profile Visit Website
  22. 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

    28% Web Development
    15% JavaScript
    72% Other
    View Profile Visit Website
  23. Blazity Logotype

    Blazity

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

    Ability to deliver

    37.5/40.0
    18.2/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

    50% Web Development
    70% JavaScript
    50% Other
    View Profile Visit Website
  24. Experion Technologies Logotype

    Experion Technologies

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

    Ability to deliver

    36.5/40.0
    16.8/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

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

    Human Made

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

    Ability to deliver

    37.8/40.0
    18/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    100% Web Development
    30% JavaScript
    View Profile Visit Website
  26. Vincit Logotype

    Vincit

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

    Ability to deliver

    36.2/40.0
    16.2/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    30% Web Development
    30% JavaScript
    70% Other
    View Profile Visit Website
  27. XWP Logotype

    XWP

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

    Ability to deliver

    35.5/40.0
    15.8/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

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

    Flowout

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

    Ability to deliver

    36.1/40.0
    20/20 Reviews
    10/10 Clients & Experience
    6.1/10 Market Presence

    Service focus

    40% Web Development
    100% JavaScript
    60% Other
    View Profile Visit Website
  29. Sigma Software Group Logotype

    Sigma Software Group

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

    Ability to deliver

    37.6/40.0
    17.8/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

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

    Merixstudio

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

    Ability to deliver

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

    Service focus

    50% Web Development
    10% JavaScript
    50% 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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