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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 20, 2026
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15 Leaders 15 Contenders

22,068 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 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.

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  • Lektik Logotype

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

    Services provided

    20% Web Development
    20% BI & Big Data Consulting & SI
    20% Blockchain +3
    20% Mobile App Development
    10% AI Consulting
    10% AI Development

    Focus Areas

    10% JavaScript
    20% Python
    20% SQL +5
    15% HTML5
    15% Typescript
    10% Java
    5% Go
    5% Ruby

    Lektik is a development firm specializing in custom test script writing and other related services. The reviews reflect a high satisfaction rate of 100%, with clients praising their timely delivery and collaborative approach. Furthermore, their cultural alignment and value proposition are consistently highlighted as key strengths.

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  • Zetico Logotype

    5.0 4 reviews
    $5,000+
    $50 - $99 / hr
    2 - 9
    Tallinn, Estonia

    Services provided

    20% Web Development
    30% Cloud Consulting & SI
    30% Custom Software Development +1
    20% Mobile App Development

    Focus Areas

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

    Zetico is a web development company known for its expertise in building and enhancing platforms with custom features. They receive overwhelmingly positive feedback, with 100% of reviewers praising their skill set and timely delivery. Clients particularly value their effective communication and ability to meet budget constraints.

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  • Fast Forward Logotype

    4.8 5 reviews
    $5,000+
    $150 - $199 / hr
    10 - 49
    Salem, MA

    Services provided

    20% Web Development
    20% AI Development
    20% AR/VR Development +2
    20% Mobile App Development
    20% UX/UI Design

    Focus Areas

    17% JavaScript
    17% ASP.NET
    17% C# +5
    15% PHP
    11% HTML5
    11% SQL
    6% Objective C
    6% Swift

    Fast Forward is a web development company specializing in custom website development and web application development. The reviews highlight the company's expertise in Drupal migration and technical strategy consultation, with notable improvements in user engagement metrics and successful project outcomes for 100% of their clients. Clients commend their excellent project management, communication, and collaboration skills.

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  • ThermoDynamo Logotype

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

    Services provided

    25% Web Development
    25% Web Design
    20% IT Managed Services +2
    20% Search Engine Optimization
    10% E-Commerce Development

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% C +7
    10% C#
    10% Java
    10% Other programming & scripting languages
    10% PHP
    10% Perl
    10% SQL
    10% Swift

    ThermoDynamo is a web development company that specializes in website updates and custom website development. Their services are highly recommended, with reviewers highlighting their personal and professional approach. 100% of the reviews mention effective communication and project success, demonstrating their commitment to client satisfaction.

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  • Forebear Productions Logotype

    Forebear Productions

    5.0 5 reviews
    $1,000+
    < $25 / hr
    10 - 49

    Services provided

    20% Web Development
    20% Mobile App Development
    10% Custom Software Development +5
    10% E-Commerce Development
    10% Graphic Design
    10% Logo
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    30% PHP
    20% AJAX +3
    10% Objective C
    10% SQL
    10% XML

    Forebear Productions is a web development company specializing in web design, backend development, and full-stack web development. Reviews highlight their effective project management, quick response times, and ability to deliver quality results, with 100% of reviewers noting their professionalism and responsiveness. Clients report significant improvements in conversion rates and efficiency due to their services.

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  • Thor Solutions Logotype

    Thor Solutions

    5.0 2 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    15% Web Development
    15% Mobile App Development
    15% UX/UI Design +7
    10% Custom Software Development
    10% E-Commerce Development
    10% Low/No Code Development
    10% Web Design
    5% API Development
    5% IT Managed Services
    5% Search Engine Optimization

    Focus Areas

    25% JavaScript
    25% Redux
    20% PHP +4
    15% HTML5
    5% AJAX
    5% SQL
    5% jquery

    Thor Solutions is a digital solutions company specializing in server management, website design, and digital strategy. Reviews highlight their prompt responsiveness, expertise, and effective problem-solving capabilities, with 100% positive feedback. Clients appreciate their proactive communication and the reliable security and organization they bring to projects.

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  • SWAAM Tech Logotype

    4.8 3 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Lahore, Pakistan

    Services provided

    25% Web Development
    25% Mobile App Development
    20% Application Testing +2
    20% E-Commerce Development
    10% IT Staff Augmentation

    Focus Areas

    20% JavaScript
    40% PHP
    25% Swift +1
    15% SQL

    SWAAM Tech is a web development company specializing in custom website development and web programming. They consistently receive positive feedback, with 100% of reviewers praising their professionalism, communication, and timely project delivery. Clients commend their ability to understand business needs and align with company values, making them a valued partner in website development projects.

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  • Metryus Logotype

    4.9 5 reviews
    $10,000+
    $50 - $99 / hr
    10 - 49
    Kyiv, Ukraine

    Services provided

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

    Focus Areas

    25% JavaScript
    20% Kotlin
    15% Java +6
    10% Redux
    10% SQL
    5% Objective C
    5% PHP
    5% Swift
    5% XML

    Metryus is a software development company specializing in UX/UI design and mobile app development, particularly for the banking and FinTech sectors. Reviews indicate a 100% positive feedback rate, highlighting their expertise, flexibility, and proactive communication. Clients commend Metryus for delivering on time and providing professional project management, with 80% of usability decisions praised as correct by users.

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  • Scriptive Logotype

    Scriptive

    5.0 2 reviews
    $5,000+
    $50 - $99 / hr
    10 - 49

    Services provided

    25% Web Development
    30% E-Commerce Development
    15% IT Strategy Consulting +3
    10% Custom Software Development
    10% IT Staff Augmentation
    10% Low/No Code Development

    Focus Areas

    30% JavaScript
    50% Typescript
    10% HTML5 +2
    5% Go
    5% Ruby

    Scriptive is a web development company specializing in Website Development, Custom Website Development, and Full-Stack Web Development. With a 100% positive feedback rate, clients consistently praise their exceptional project management and responsive service. Notable themes include their technical proficiency and commitment to client success, although one client noted a desire for enhanced aesthetic design expertise.

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  • APLICATIV Logotype

    4.7 3 reviews
    $25,000+
    $25 - $49 / hr
    10 - 49
    Kraków, Poland

    Services provided

    40% Web Development
    40% Custom Software Development
    10% IoT Development +1
    10% Mobile App Development

    Focus Areas

    30% JavaScript
    30% PHP
    10% AJAX +4
    10% Python
    10% SQL
    5% Go
    5% Typescript

    APLICATIV is a technology solutions company specializing in automation systems and custom software development. They have received overwhelmingly positive feedback, with 100% of reviewers praising their expertise and the smooth execution of projects. Clients commend their excellent communication and timely delivery, though one suggestion was made for developing an assistant office to manage paperwork.

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  • Infinity Tech Solutions Logotype

    4.9 4 reviews
    $1,000+
    < $25 / hr
    2 - 9
    Deralakatte, India

    Services provided

    15% Web Development
    15% Custom Software Development
    10% Branding +6
    10% Graphic Design
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design

    Focus Areas

    20% JavaScript
    50% PHP
    20% ASP.NET +1
    10% Python

    Infinity Tech Solutions is a full-stack web development company specializing in custom website development and web design. Their reviews highlight a 100% positive feedback rate, with clients praising their efficient, timely service and excellent communication. Notably, 100% of reviewers emphasize the team's industry knowledge and ability to deliver impactful solutions that enhance customer engagement and sales.

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  • Black Dot Technologies LLC Logotype

    5.0 5 reviews
    $10,000+
    $25 - $49 / hr
    10 - 49
    Minneapolis, MN

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Mobile App Development +4
    10% Application Management & Support
    10% Custom Software Development
    10% IT Strategy Consulting
    10% Low/No Code Development

    Focus Areas

    20% JavaScript
    60% PHP
    20% ColdFusion

    Black Dot Technologies LLC is a web development company specializing in custom website development and UX/UI design. With a strong emphasis on collaboration, they successfully translated a client's artistic vision into a professional website, receiving 100% positive feedback for their professionalism, project management, and customer service. They are praised for their ability to incorporate client ideas and deliver user-friendly, effective web solutions.

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  • Panic Bear Consulting Logotype

    5.0 1 review
    $10,000+
    $50 - $99 / hr
    10 - 49
    Ho Chi Minh City, Vietnam

    Services provided

    20% Web Development
    40% UX/UI Design
    20% E-Commerce Development +2
    10% Logo
    10% Mobile App Development

    Focus Areas

    30% JavaScript
    40% PHP
    10% AJAX +2
    10% Redux
    10% SQL

    Panic Bear Consulting is a consulting firm specializing in website development and UI/UX consulting, targeting international markets. Reviews highlight their professionalism and creativity, with 100% positive feedback on project delivery and a 50% increase in website traffic. Clients appreciate their timely delivery and supportive consulting approach, although some suggest the need for more detailed briefings.

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  • Vaihe Media Logotype

    5.0 1 review
    $1,000+
    $50 - $99 / hr
    Freelancer
    Ylöjärvi, Finland

    Services provided

    80% Web Development
    20% E-Commerce Development

    Focus Areas

    50% JavaScript
    50% HTML5

    Vaihe Media is a web development company specializing in custom website development and technical support. Their services are highly regarded, with 100% positive feedback from reviewers, highlighting their excellent project management, timely delivery, and effective communication. Clients particularly value their ability to deliver customizable solutions and maintain smooth interactions.

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  • INPREZA Logotype

    5.0 36 reviews
    $10,000+
    $50 - $99 / hr
    10 - 49
    Vancouver, Canada

    Services provided

    55% Web Development
    30% CRM Consulting and SI
    10% Web Design +1
    5% UX/UI Design

    Focus Areas

    25% JavaScript
    30% Typescript
    15% PHP +3
    15% Python
    10% SQL
    5% jquery

    INPREZA ® LLC is a web development company praised for delivering high-quality websites with efficient project management and excellent customer service. Clients consistently highlight their fast communication and understanding of business needs, with 100% of reviewers expressing satisfaction and no areas for improvement. Most mention their expertise in web development, design, and promotion, enhancing clients' online presence and attracting new customers.

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  • Mutations Limited Logotype

    5.0 9 reviews
    $10,000+
    $150 - $199 / hr
    10 - 49
    Reno, NV

    Services provided

    25% Web Development
    50% Custom Software Development
    15% UX/UI Design +1
    10% Mobile App Development

    Focus Areas

    40% JavaScript
    40% Ruby
    10% Python +1
    10% SQL

    Mutations Limited is a web development company specializing in custom website development, full-stack web development, and web application development. Reviews indicate that 100% of clients appreciate their expertise in web programming and project management, highlighting their attentiveness and ability to integrate seamlessly as an extension of their clients' teams. Clients particularly commend their technical proficiency and problem-solving capabilities.

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  • GetCode Logotype

    5.0 5 reviews
    $10,000+
    $25 - $49 / hr
    10 - 49
    Kyiv, Ukraine

    Services provided

    90% Web Development
    10% Custom Software Development

    Focus Areas

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

    GetCode is a web development company specializing in back-end development and architecture, with particular expertise in Laravel and database design. Across their reviews, 100% of clients commend their outstanding code quality, responsiveness, and excellent project management. Clients frequently highlight their forward-thinking approach and seamless collaboration, making them a preferred partner for complex web development projects.

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  • Arcadia Tech Logotype

    5.0 2 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Surfside, FL

    Services provided

    15% Web Development
    15% Microservices Architecture Services
    15% Mobile App Development +8
    10% API Development
    10% Custom Software Development
    10% Low/No Code Development
    5% AI Consulting
    5% AI Development
    5% Application Testing
    5% Data Annotation Services
    5% Digital Engineering

    Focus Areas

    20% JavaScript
    20% Typescript
    10% C# +4
    10% Kotlin
    5% Python
    5% Redux
    5% Swift

    Arcadia Tech is a web and backend development company specializing in full-stack web development, web application development, and custom website development. The overall feedback is highly positive, with 100% of reviewers praising their commitment, timely deliveries, and innovative solutions. Clients particularly value their alignment with company values and effective project management.

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  • Webixion Technologies LLC Logotype

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

    Services provided

    50% Web Development
    20% E-Commerce Development
    20% Mobile App Development +1
    10% Custom Software Development

    Focus Areas

    20% JavaScript
    50% PHP
    20% AJAX +2
    5% Objective C
    5% Swift

    Webixion Technologies LLC is a web development company specializing in web application development and custom website development. Reviewers consistently praise their attentive listening skills and exemplary responsiveness, with 100% of feedback highlighting their ability to meet client needs effectively and promptly. Clients recommend their services for delivering high-quality solutions at reasonable rates.

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  • codecreed Logotype

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

    Services provided

    35% Web Development
    30% Custom Software Development
    20% Mobile App Development +1
    15% AI Development

    Focus Areas

    15% JavaScript
    25% Java
    20% Python +3
    20% Typescript
    10% Kotlin
    10% SQL

    codecreed is a mobile application development company known for their technical expertise and effective communication. Reviewers appreciate their problem-solving abilities and timely delivery, with 100% of feedback highlighting satisfaction. However, some suggest the inclusion of a dedicated customer liaison to enhance client-developer interactions. Overall, codecreed is highly recommended for future projects.

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  • Webmaster Services Hawaii Logotype

    4.8 3 reviews
    $1,000+
    $50 - $99 / hr
    2 - 9
    Honolulu, HI

    Services provided

    20% Web Development
    25% Search Engine Optimization
    20% Web Design +3
    15% Pay Per Click
    10% Content Marketing
    10% E-Commerce Development

    Focus Areas

    25% JavaScript
    35% PHP
    15% HTML5 +2
    15% SQL
    10% jquery

    Webmaster Services Hawaii is a web development company recognized for their expertise in Website Development and SEO. The reviews indicate a 100% positive feedback rate, highlighting their professionalism, punctuality, and alignment with client goals. Clients commend their ability to modernize and personalize websites, resulting in increased visibility and lead generation. Approximately 50% of reviewers specifically note their adeptness in transforming outdated sites with custom development solutions.

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  • The Yellow People Logotype

    The Yellow People

    4.3 2 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    20% Web Development
    40% E-Commerce Development
    30% UX/UI Design +1
    10% Low/No Code Development

    Focus Areas

    20% JavaScript
    10% AJAX
    10% HTML5 +6
    10% Other programming & scripting languages
    10% PHP
    10% Redux
    10% SQL
    10% Typescript
    10% jquery

    The Yellow People is a web development company specializing in Website Development and Web Design. They received entirely positive feedback, with 100% of reviewers noting their proactive partnership, dedication, and strong client relations. Many reviewers appreciated their thorough processes and expertise in creating engaging, user-friendly websites that enhance web presence and drive increased traffic.

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  • Cat Media Logotype

    Cat Media

    5.0 2 reviews
    $1,000+
    $150 - $199 / hr
    2 - 9

    Services provided

    10% Web Development
    60% CRM Consulting and SI
    10% Content Marketing +2
    10% E-Commerce Development
    10% Marketing Strategy

    Focus Areas

    20% JavaScript
    20% Other programming & scripting languages
    20% PHP +2
    20% Visual Basic
    20% XML

    Cat Media is a versatile media company specializing in video content creation and content strategy development, particularly for NGOs and non-profits. The company has been praised for its professionalism, efficiency, and human-centered approach, with 100% positive feedback from clients. Notably, 50% of reviewers highlighted their remarkable adaptability and ability to exceed expectations, contributing significantly to project success and client satisfaction.

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  • NetworkAlgo Business Solutions Logotype

    5.0 2 reviews
    $5,000+
    < $25 / hr
    2 - 9
    Nagpur, India

    Services provided

    40% Web Development
    40% Mobile App Development
    20% Custom Software Development

    Focus Areas

    40% JavaScript
    60% PHP

    NetworkAlgo Business Solutions is a development company specializing in custom software solutions, including mobile apps and tracking systems. The company has received overwhelmingly positive feedback, with 100% of reviewers praising their excellent communication and attention to detail. Clients commend Ajay and his team for their responsiveness and ability to understand and anticipate project needs effectively.

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  • Human Friend Digital Logotype

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

    Services provided

    15% Web Development
    30% Search Engine Optimization
    20% Conversion Optimization +2
    20% Digital Strategy
    15% Web Design

    Focus Areas

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

    Human Friend Digital is a web development company that excels in Website Development, offering comprehensive services including Website Redesign, SEO Optimization, and Lead Generation. Positive feedback is prevalent, with clients highlighting their effective solutions and increased web traffic; 100% of the reviewers noted timely deliverables and impressive problem-solving capabilities.

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  • Kynet Web Solutions Pvt Ltd Logotype

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

    Services provided

    30% Web Development
    25% E-Commerce Development
    25% UX/UI Design +1
    20% Web Design

    Focus Areas

    20% JavaScript
    20% PHP
    15% AJAX +6
    15% SQL
    10% jquery
    5% HTML5
    5% Other programming & scripting languages
    5% Python
    5% Typescript

    Kynet Web Solutions Pvt Ltd is a web development company specializing in responsive WordPress website design and development. Their reviews highlight a consistent record of success, with strong client satisfaction noted through effective project management and clear communication, as 100% of reviewers praised their clarity, efficiency, and reliability. They effectively balance design and functionality to meet client needs.

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  • Digitaleap Logotype

    5.0 3 reviews
    $5,000+
    $25 - $49 / hr
    2 - 9
    Karachi, Pakistan

    Services provided

    20% Web Development
    20% IT Staff Augmentation
    20% Mobile App Development +4
    10% API Development
    10% Custom Software Development
    10% DevOps Managed Services
    10% Low/No Code Development

    Focus Areas

    40% JavaScript
    30% Typescript
    15% HTML5 +2
    10% Redux
    5% AJAX

    Digitaleap is a web development company specializing in custom website development and web application development. With 100% of reviewers expressing satisfaction, clients highlight their integrity, dedication, and ability to exceed expectations. They are praised for their comprehensive project management, problem-solving skills, and commitment to aligning with client visions.

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  • Big Digitals | Mobile & Web Development Logotype

    Big Digitals | Mobile & Web Development

    5.0 2 reviews
    $10,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    15% Web Development
    45% Mobile App Development
    10% Application Testing +3
    10% E-Commerce Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    15% JavaScript
    25% PHP
    20% Java +3
    20% Swift
    10% Kotlin
    10% Objective C

    Big Digitals | Mobile & Web Development is a development company specializing in creating mobile applications and websites with a strong focus on user experience. Their team is praised for effective communication and client orientation, with 100% of reviewers expressing satisfaction and commendation for their responsive project management and deep understanding of client needs.

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  • Techxide Logotype

    Techxide

    2.8 2 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    10% Web Development
    20% Digital Strategy
    20% Web Design +5
    10% Advertising
    10% Branding
    10% Content Marketing
    10% Logo
    10% Video Production

    Focus Areas

    20% JavaScript
    30% ASP.NET
    30% PHP +1
    20% SQL

    Techxide is a professional design company specializing in logo creation. Based on client feedback, 100% of the reviews highlight their high-quality work and fast, professional service. Reviewers consistently praise their creativity and efficiency, with no areas identified for improvement.

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  • Webconne8 Logotype

    Webconne8

    5.0 2 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    35% Web Development
    30% Mobile App Development
    20% Search Engine Optimization +1
    15% Pay Per Click

    Focus Areas

    10% JavaScript
    40% PHP
    30% ASP.NET +2
    10% SQL
    10% Swift

    Webconne8 is a proficient web development company with expertise in custom website development and web application development. Garnering 100% positive feedback, reviewers consistently highlight their speed, professionalism, and integrity. Clients appreciate their ability to deliver projects on time while maintaining quality, as evidenced by their impressive execution of dynamic website functionalities and ongoing maintenance services.

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  • Rubigo Logotype

    5.0 3 reviews
    $1,000+
    $25 - $49 / hr
    2 - 9
    Cape Town, South Africa

    Services provided

    40% Web Development
    20% Custom Software Development
    14% Low/No Code Development +5
    10% DevOps Managed Services
    5% API Development
    5% E-Commerce Development
    5% UX/UI Design
    1% Web Design

    Focus Areas

    15% JavaScript
    65% PHP
    10% jquery +2
    5% Java
    5% Python

    Rubigo is a web development company specializing in custom website development and online platform integration. Reviews highlight a 100% positive feedback rate, with clients praising their project management, responsiveness, and deep product knowledge, all contributing to increased sales and operational efficiency. Their competitive pricing and alignment with client values are also frequently noted.

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  • Awake agency Logotype

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

    Services provided

    25% Web Development
    20% UX/UI Design
    15% Graphic Design +4
    15% Web Design
    10% Logo
    10% Low/No Code Development
    5% Other Design

    Focus Areas

    50% JavaScript
    50% HTML5

    Awake agency is a comprehensive web development company specializing in Webflow, branding, and graphic design. The feedback indicates a 100% satisfaction rate, highlighting their timely delivery, effective communication, and expertise in creating cohesive and visually appealing online presences, as evidenced by improved website traffic and search engine rankings for clients.

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  • Primathon Technology Ventures Pvt Ltd Logotype

    Primathon Technology Ventures Pvt Ltd

    4.5 1 review
    $25,000+
    $25 - $49 / hr
    50 - 249

    Services provided

    10% Web Development
    10% AI Consulting
    10% AI Development +7
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% Generative AI
    10% IT Staff Augmentation
    10% Mobile App Development
    10% Product Design
    10% UX/UI Design

    Focus Areas

    15% JavaScript
    20% Python
    20% SQL +4
    15% Java
    10% Ember.js
    10% HTML5
    10% Kotlin

    Primathon Technology Ventures Pvt Ltd is a technology solutions company specializing in backend development and digital product engineering for diverse clients, including startups and Fortune 500 companies. Their reviews are overwhelmingly positive, with 100% of clients highlighting their effective problem-solving skills and seamless project management, ultimately ensuring error-free product launches.

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  • Bridgeway Digital Logotype

    Bridgeway Digital

    5.0 3 reviews
    Undisclosed
    $25 - $49 / hr
    50 - 249

    Services provided

    10% Web Development
    30% Video Production
    10% E-Commerce Development +5
    10% Graphic Design
    10% Mobile App Development
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    30% PHP
    25% Java +1
    25% SQL

    Bridgeway Digital is a versatile digital solutions provider specializing in animated graphics, e-commerce website development, and explainer videos. The company is lauded for its responsive communication and high-quality deliverables, with over 90% of reviewers highlighting their impressive project management and cost-effectiveness. Areas for improvement include expanding expertise in specific technical aspects, such as Google Shopping feeds.

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  • Abstract Softweb Logotype

    5.0 1 review
    $1,000+
    < $25 / hr
    50 - 249
    Jaipur, India

    Services provided

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

    Focus Areas

    10% JavaScript
    10% AJAX
    10% C# +7
    10% Java
    10% Objective C
    10% PHP
    10% Python
    10% Ruby
    10% SQL
    10% Swift

    Abstract Softweb is a web development company specializing in custom website development and web application development. Their services include website design, logo creation, and innovative solutions like online payment and testing features. The client reported a 100% satisfaction rate, noting effective project management and impressive delivery, such as meeting deadlines and achieving all project objectives.

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  • Passio Logotype

    5.0 3 reviews
    $5,000+
    $50 - $99 / hr
    2 - 9
    Edinburgh, Scotland

    Services provided

    25% Web Development
    25% Mobile App Development
    20% UX/UI Design +2
    20% Web Design
    10% Product Design

    Focus Areas

    40% JavaScript
    20% PHP
    10% Java +3
    10% Python
    10% SQL
    10% Swift

    Passio is a digital development company specializing in creating accessible web applications and tools. The reviews highlight their outstanding project management, dedication to accessibility, and collaborative approach, with 100% of feedback being positive. Clients commend their professionalism, attention to detail, and ability to work seamlessly with diverse stakeholders, making them an exceptional partner in delivering complex, inclusive technological solutions.

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  • kytwo Logotype

    kytwo

    5.0 2 reviews
    $1,000+
    $50 - $99 / hr
    10 - 49

    Services provided

    40% Web Development
    35% E-Commerce Development
    15% Web Design +2
    5% Logo
    5% UX/UI Design

    Focus Areas

    30% JavaScript
    20% PHP
    20% SQL +2
    20% Typescript
    10% HTML5

    Kytwo is a web development company specializing in Custom Website Development and Web Design. They consistently receive positive feedback, with 100% of reviewers highlighting their effective communication and problem-solving skills, as well as timely project delivery. Clients report significant improvements, such as a 37% reduction in bounce rates and doubled bookings post-website refresh.

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  • Bizcope Logotype

    5.0 15 reviews
    Undisclosed
    Undisclosed
    50 - 249
    ঢাকা, Bangladesh

    Services provided

    10% Web Development
    60% Search Engine Optimization
    15% Social Media Marketing +1
    15% Web Design

    Focus Areas

    10% JavaScript
    20% Other programming & scripting languages
    10% Ember.js +6
    10% Java
    10% Objective C
    10% PHP
    10% Python
    10% Ruby
    10% Visual Basic

    Bizcope is a Web Design and Development company with a strong emphasis on reliability and customer satisfaction. The majority of their reviews highlight their impressive project management, punctuality, and responsiveness, with 100% of reviewers expressing satisfaction and no areas for improvement noted. Clients consistently praise Bizcope for exceeding expectations, with 83% showcasing successful measurable outcomes such as improved Google rankings and website performance.

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  • Clear Function Logotype

    5.0 8 reviews
    $25,000+
    $150 - $199 / hr
    10 - 49
    Germantown, TN

    Services provided

    15% Web Development
    30% Custom Software Development
    20% Generative AI +4
    10% API Development
    10% Low/No Code Development
    10% Microservices Architecture Services
    5% UX/UI Design

    Focus Areas

    20% JavaScript
    40% C#
    20% ASP.NET +1
    20% SQL

    Clear Function is a versatile Web Development company specializing in complex application migrations and mobile app development. Their technical expertise and excellent project management skills are repeatedly highlighted, with 100% of reviewers praising their problem-solving capabilities and alignment with client values. They are commended for timely delivery and exceptional support, making them a highly recommended partner for development projects.

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  • Tech2morrow Software & Services Pvt. Ltd. Logotype

    Tech2morrow Software & Services Pvt. Ltd.

    5.0 1 review
    $10,000+
    $25 - $49 / hr
    2 - 9

    Services provided

    30% Web Development
    40% Web Design
    20% Search Engine Optimization +1
    10% Social Media Marketing

    Focus Areas

    30% JavaScript
    30% PHP
    30% Python +1
    10% C++

    Tech2morrow Software & Services Pvt. Ltd. is a web development company highly regarded for their expertise in Website Development and Digital Marketing. With a focus on quality and punctuality, 100% of the reviews highlight their impressive work quality and timely delivery, demonstrating a strong commitment to client satisfaction.

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  • InspireXsolutions Logotype

    InspireXsolutions

    5.0 1 review
    Undisclosed
    $25 - $49 / hr
    2 - 9

    Services provided

    20% Web Development
    20% Social Media Marketing
    20% Web Design +6
    10% Logo
    10% Low/No Code Development
    5% Advertising
    5% Branding
    5% Direct Marketing
    5% Search Engine Optimization

    Focus Areas

    80% JavaScript
    20% XML

    InspireXsolutions is a web development company known for its comprehensive services in Custom Website Development, Web Design, and social media integration. The reviews highlight the CEO's exceptional project understanding and impressive professional skills. With 100% positive feedback, clients appreciate the company's ability to effectively translate project goals into successful outcomes.

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  • Deckweiss Logotype

    4.9 4 reviews
    $10,000+
    $100 - $149 / hr
    10 - 49
    Purgstall an der Erlauf, Austria

    Services provided

    20% Web Development
    40% Custom Software Development
    15% IT Strategy Consulting +3
    10% Mobile App Development
    10% UX/UI Design
    5% Application Management & Support

    Focus Areas

    20% JavaScript
    20% Kotlin
    20% Typescript +7
    10% Python
    5% AJAX
    5% HTML5
    5% Java
    5% PHP
    5% SQL
    5% XML

    Deckweiss is a web development company praised for its expertise in Backend and Frontend Development, offering strong value and flexibility. Approximately 100% of the reviews highlight their competence and modern technology usage, though there is a slight suggestion for more efficient web design practices.

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  • Episyche Technologies Logotype

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

    Services provided

    50% Web Development
    15% AI Development
    10% AI Consulting +3
    10% Cloud Consulting & SI
    10% Generative AI
    5% Mobile App Development

    Focus Areas

    20% JavaScript
    20% Kotlin
    20% Python +2
    20% SQL
    20% Typescript

    Episyche Technologies is a web development company specializing in custom website and web application development, focusing on backend and frontend solutions. Reviews highlight their efficient project management, timely delivery, and technical proficiency, with 100% positive feedback underscoring their expertise in complex projects and responsive communication. Clients appreciate their understanding of project needs and commitment to quality.

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  • Arya57 LLC Logotype

    5.0 3 reviews
    $5,000+
    $50 - $99 / hr
    10 - 49
    Paramus, NJ

    Services provided

    30% Web Development
    20% Social Media Marketing
    10% Content Marketing +4
    10% Digital Strategy
    10% Enterprise App Modernization
    10% Search Engine Optimization
    10% UX/UI Design

    Focus Areas

    35% JavaScript
    30% PHP
    30% Python +1
    5% Other programming & scripting languages

    Arya57 LLC is a custom website development company specializing in Web Development and Web Application Development. The company has received positive feedback, with 100% of reviewers highlighting their strong project management and ability to deliver beyond expectations. Clients commend their flexibility and problem-solving skills, noting no areas for improvement.

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  • alienlab Logotype

    alienlab

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

    Services provided

    30% Web Development
    15% Custom Software Development
    15% E-Commerce Development +6
    10% Cybersecurity
    10% Mobile App Development
    5% Application Testing
    5% Blockchain
    5% Cloud Consulting & SI
    5% IoT Development

    Focus Areas

    50% JavaScript
    20% Redux
    15% AJAX +3
    5% Java
    5% PHP
    5% Python

    Alienlab is a web development company specializing in full-stack web development and web application development. The reviews indicate a strong emphasis on professionalism and the ability to deliver effective solutions, with 100% positive feedback highlighting their organized project management and excellent price/quality ratio. Many reviewers commend their commitment to security, crucial for fintech projects.

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  • Witarist Logotype

    Witarist

    5.0 2 reviews
    $1,000+
    < $25 / hr
    10 - 49

    Services provided

    20% Web Development
    40% IT Staff Augmentation
    20% AI Development +2
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    55% JavaScript
    45% Typescript

    Witarist offers Web Development and related services, specializing in project redevelopment and application maintenance. The reviews highlight their prompt project management, effective communication, and alignment with clients' values, emphasizing their excellent understanding of project requirements. Clients appreciate Witarist's cost-effective solutions and cultural fit, with no suggested areas for improvement.

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  • CODEVISION TECHNOLOGIES PRIVATE LIMITED Logotype

    5.0 13 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49
    Ahmedabad, India

    Services provided

    15% Web Development
    30% Low/No Code Development
    15% Business Consulting +5
    15% Custom Software Development
    10% Robotics Process Automation
    5% API Development
    5% Application Management & Support
    5% Mobile App Development

    Focus Areas

    25% JavaScript
    25% ASP.NET
    25% C# +1
    25% Other programming & scripting languages

    CODEVISION TECHNOLOGIES PRIVATE LIMITED is a web development company specializing in custom website development and web design. With a focus on modernizing and securing websites, they receive 100% positive feedback for their technical expertise, effective communication, and adherence to deadlines. Reviewers frequently commend their ability to enhance usability and deliver projects efficiently, with no areas noted for improvement.

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  • DevDimensions Logotype

    5.0 1 review
    $5,000+
    $25 - $49 / hr
    50 - 249
    Boynton Beach, FL

    Services provided

    30% Web Development
    30% IT Staff Augmentation
    30% UX/UI Design +1
    10% Mobile App Development

    Focus Areas

    15% JavaScript
    40% PHP
    20% Python +2
    15% HTML5
    10% jquery

    DevDimensions is a full-stack web development company specializing in custom website development and web application development. Reviewers highlight their impressive technical expertise and ability to transform legacy platforms into modern, scalable products with features like user roles and mobile apps. The company is praised for its responsive project management and commitment to delivering high-quality solutions, with over 90% of feedback being positive.

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  • Zero2One Innovate Solutions LLP Logotype

    5.0 3 reviews
    Undisclosed
    $50 - $99 / hr
    2 - 9
    Bengaluru, India

    Services provided

    20% Web Development
    50% Low/No Code Development
    15% Custom Software Development +1
    15% Mobile App Development

    Focus Areas

    30% JavaScript
    25% HTML5
    25% SQL +2
    15% Java
    5% Visual Basic

    Zero2One Innovate Solutions LLP is a web development company specializing in custom website development and web application development. Their reviews reflect 100% positive feedback, highlighting impressive project management, timely delivery, and a user-focused design approach. Clients commend their attention to detail and commitment to exceeding expectations, making them an excellent choice for web development needs.

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  • Quest Website Developers Ltd Logotype

    5.0 6 reviews
    $5,000+
    $100 - $149 / hr
    10 - 49
    Nairobi, Kenya

    Services provided

    20% Web Development
    50% Web Design
    10% Custom Software Development +2
    10% E-Commerce Development
    10% Mobile App Development

    Focus Areas

    30% JavaScript
    50% PHP
    10% Typescript +2
    5% Other programming & scripting languages
    5% Python

    Quest Website Developers Ltd is a web development company specializing in website design, development, and SEO services. With over 90% positive feedback across reviews, clients praise their ability to create highly functional and visually appealing websites tailored to specific business needs. They excel in user engagement and online visibility, though some clients suggest improvements in communication frequency and post-launch support.

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We evaluate service providers using a structured methodology that combines:

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Ability to deliver
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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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