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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: July 11, 2026
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22,259 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Featured

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    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

    4.9 91 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 and engineering service provider specializing in full-stack web development and custom website development. The company consistently receives positive feedback, with approximately 95% of reviews highlighting their high-quality developers and management excellence. Clients frequently commend their project management skills and responsiveness, making them a reliable partner for complex web programming and online development projects.

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  • Ringo Solutions Logotype

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

    Services provided

    35% Web Development
    25% Mobile App Development
    20% Application Management & Support +2
    10% UX/UI Design
    10% Web Design

    Focus Areas

    65% JavaScript
    35% Java

    Ringo Solutions is a mobile app development company specializing in Java and Android applications, with expertise in web development as well. Clients commend their continuous involvement, openness, and effective project management, with 100% mentioning positive communication and innovative ideas. Ringo's work is praised for transforming client concepts into functional applications, as evidenced by the successful launch of the "MyMoney" app in Poland.

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  • Fire Source Media Logotype

    5.0 4 reviews
    $1,000+
    $100 - $149 / hr
    2 - 9
    Waco, TX

    Services provided

    25% Web Development
    50% Search Engine Optimization
    25% Digital Strategy

    Focus Areas

    10% JavaScript
    15% Other programming & scripting languages
    15% Redux +6
    10% Ember.js
    10% Objective C
    10% PHP
    10% Python
    10% Swift
    10% Visual Basic

    Fire Source Media is a website development company specializing in web design, custom website development, and SEO. The company receives overwhelmingly positive feedback, with reviewers unanimously praising its strategic approach, effective communication, and timely project delivery. Notably, 100% of clients commend their responsiveness and the impressive quality of the delivered websites.

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  • Exagic Logotype

    Exagic

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

    Services provided

    50% Web Development
    20% Custom Software Development
    20% E-Commerce Development +1
    10% Application Management & Support

    Focus Areas

    20% JavaScript
    40% PHP
    20% SQL +2
    10% HTML5
    10% jquery

    Exagic is a web development company that excels in custom website development and e-commerce solutions. Reviews highlight their commitment and honesty, with 99% of agreed functionalities delivered on time, and a 100% data migration success rate. Clients appreciate their responsiveness, although a suggestion for a technical project manager was noted.

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  • LeftHand Digital Logotype

    5.0 2 reviews
    $5,000+
    $50 - $99 / hr
    2 - 9
    Atlanta, GA

    Services provided

    50% Web Development
    30% E-Commerce Development
    20% Web Design

    Focus Areas

    40% JavaScript
    30% Java
    30% PHP

    LeftHand Digital is a web development company specializing in Website Development and Web Design. They have consistently received positive feedback, with 100% of reviewers highlighting their professionalism, responsiveness, and ability to meet project goals efficiently. Clients commend their timely communication and the added value brought through functional website elements, such as pop-up ads and contact forms.

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  • Charu Mindworks (India) Private Limited Logotype

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

    Services provided

    25% Web Development
    25% Custom Software Development
    25% Mobile App Development +2
    15% E-Commerce Development
    10% Web Design

    Focus Areas

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

    Charu Mindworks (India) Private Limited is a web development company specializing in custom website and web application development. Feedback consistently highlights their professional and supportive team, with 100% of reviewers noting timely delivery and post-project support. The company excels in creating functional websites, generating positive outcomes such as seamless registration and payment processes.

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  • G-2 Division Logotype

    G-2 Division

    5.0 3 reviews
    $1,000+
    $50 - $99 / hr
    10 - 49

    Services provided

    15% Web Development
    20% Custom Software Development
    20% E-Commerce Development +4
    15% Web Design
    10% AR/VR Development
    10% Digital Strategy
    10% Marketing Strategy

    Focus Areas

    33% JavaScript
    33% PHP
    12% SQL +2
    11% Swift
    11% Typescript

    G-2 Division is a web development company specializing in custom website development and full-stack web development. Reviews highlight their commitment and project understanding, with 100% positive feedback. Clients commend their ability to create complex, user-friendly online platforms and integration of best practices. G-2 Division's proactive approach and adaptability contribute to successful project outcomes.

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  • Infinity Group Logotype

    5.0 10 reviews
    $25,000+
    $50 - $99 / hr
    50 - 249
    Białystok, Poland

    Services provided

    25% Web Development
    25% E-Commerce Development
    20% Custom Software Development +2
    20% IT Strategy Consulting
    10% Mobile App Development

    Focus Areas

    15% JavaScript
    15% ASP.NET
    15% Typescript +8
    10% AJAX
    10% ASP
    10% Other programming & scripting languages
    5% C++
    5% PHP
    5% Redux
    5% SQL
    5% XML

    Infinity Group is a versatile web development company specializing in full-stack web development, custom website development, and web application development, with expertise in platforms such as WordPress, Kentico, and Sitecore. Reviews highlight Infinity Group's technical proficiency, efficient project management, and responsive communication. Approximately 100% of reviewers commend their flexibility and proactive involvement, while no significant areas for improvement are noted across feedback.

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  • ExeLance IT Logotype

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

    Services provided

    20% Web Development
    35% AI Development
    20% Mobile App Development +2
    15% IT Staff Augmentation
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    15% Kotlin
    15% Objective C +5
    15% Python
    15% Redux
    15% Swift
    10% Typescript
    5% SQL

    ExeLance IT is a system development company known for its expertise in end-to-end system solutions, including requirement analysis and UI/UX design. Reviews highlight their professionalism, timely delivery, and effective communication. All feedback was positive, emphasizing their ability to enhance performance and customer satisfaction, with 100% of reviewers noting their impressive technical and business understanding.

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  • AssaptR Logotype

    5.0 4 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49
    Ahmedabad, India

    Services provided

    25% Web Development
    25% E-Commerce Development
    10% Low/No Code Development +5
    10% Mobile App Development
    10% Search Engine Optimization
    10% Web Design
    5% Digital Strategy
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    40% PHP
    20% Swift +2
    15% HTML5
    15% Kotlin

    AssaptR is a full-stack web development company specializing in custom website development and design. Across their reviews, they are praised for their technical proficiency, creative web design, and commitment to delivering on promises, with 100% of reviewers highlighting timely delivery and excellent communication. Clients appreciate their understanding of business needs and ability to execute SEO-optimized, user-friendly websites.

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  • sol.agency Logotype

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

    Services provided

    10% Web Development
    30% Marketing Strategy
    15% Social Media Marketing +4
    15% Web Design
    10% Advertising
    10% Branding
    10% Video Production

    Focus Areas

    20% JavaScript
    25% Python
    20% Other programming & scripting languages +5
    15% Swift
    5% AJAX
    5% PHP
    5% SQL
    5% Visual Basic

    sol.agency is a web development company specializing in front-end and back-end website development, brand identity creation, and online advertising. Feedback highlights their ability to consistently deliver projects on time, with 100% of reviewers praising their professionalism and collaboration. Some suggest minor improvements in communication, but overall satisfaction is high.

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  • WebCodeGenie Technology Pvt. Ltd. Logotype

    5.0 2 reviews
    $5,000+
    $50 - $99 / hr
    50 - 249
    Ahmedabad, India

    Services provided

    15% Web Development
    40% Mobile App Development
    20% Web Design +2
    15% Custom Software Development
    10% AR/VR Development

    Focus Areas

    26% JavaScript
    32% PHP
    11% SQL +4
    11% Swift
    10% Kotlin
    5% HTML5
    5% Objective C

    WebCodeGenie Technology Pvt. Ltd. is a versatile web development company specializing in custom website development, utilizing various technologies such as Laravel, WordPress, PHP, and MySQL. The company consistently exceeds client expectations, with 100% of reviewers expressing satisfaction with their services. Clients commend their exceptional project management and flexible team staffing, highlighting the ability to select programmers tailored to specific project needs.

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  • Essencive Agency Logotype

    5.0 4 reviews
    $1,000+
    $25 - $49 / hr
    2 - 9
    L'viv, Ukraine

    Services provided

    20% Web Development
    40% Low/No Code Development
    20% UX/UI Design +1
    20% Web Design

    Focus Areas

    35% JavaScript
    35% PHP
    30% SQL

    Essencive Agency is a web development company specializing in website development and design. According to client reviews, 100% of the feedback is positive, highlighting their excellent communication, high-quality work, and responsiveness to additional requests. Their expertise in transforming designs into functional websites is particularly praised.

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  • Waking Digital Logotype

    5.0 3 reviews
    $1,000+
    $100 - $149 / hr
    2 - 9
    Akron, OH

    Services provided

    25% Web Development
    40% Search Engine Optimization
    15% Branding +2
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    40% JavaScript
    50% Typescript
    10% Other programming & scripting languages

    Waking Digital is a web development company specializing in SEO and online development services. They are recognized for their attention to detail and expertise, with 100% of reviewers noting timely delivery and responsiveness. Clients report a significant improvement in search engine visibility, with monthly impressions increasing by 400% within two months.

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  • Portinos Digital Agency Logotype

    5.0 3 reviews
    $5,000+
    Undisclosed
    10 - 49
    Buenos Aires, Argentina

    Services provided

    20% Web Development
    40% E-Commerce Development
    20% Branding +1
    20% Web Design

    Focus Areas

    20% JavaScript
    20% HTML5
    20% PHP +3
    20% SQL
    15% AJAX
    5% Python

    Portinos Digital Agency is a reputable company specializing in Web Development and Web Design services. Known for their collaborative approach, they have successfully modernized brand identities and developed scalable, multilingual websites. With 100% positive feedback, 100% multilingual coverage, and a focus on clear communication and client autonomy, they effectively meet project timelines and client needs.

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  • Wazobia Technologies Logotype

    4.5 1 review
    $5,000+
    $25 - $49 / hr
    10 - 49
    London, England

    Services provided

    15% Web Development
    15% Custom Software Development
    15% Enterprise App Modernization +4
    15% Mobile App Development
    15% Product Design
    15% UX/UI Design
    10% IT Staff Augmentation

    Focus Areas

    25% JavaScript
    25% PHP
    25% Python +1
    25% Redux

    Wazobia Technologies is a web development company specializing in custom website development and full-stack web development. The reviews highlight their exemplary standards, flexibility, and seamless integration with the client's team. 100% of feedback is positive, emphasizing their excellent project completion times and effective communication, with no areas for improvement noted.

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  • Artzen Technologies Logotype

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

    Services provided

    20% Web Development
    30% Custom Software Development
    30% E-Commerce Development +3
    10% Other Application Development
    5% Content Marketing
    5% Social Media Marketing

    Focus Areas

    35% JavaScript
    25% AJAX
    25% Redux +3
    5% SQL
    5% Typescript
    5% jquery

    Artzen Technologies is a web development company specializing in website development and enhancement for online stores. The reviews indicate a high level of customer satisfaction, with 100% of reviewers praising their efficiency, technical expertise, and timely delivery of results. Clients appreciate their ability to increase sales and their proactive approach to problem-solving.

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  • Pluscode Logotype

    4.8 2 reviews
    $5,000+
    $25 - $49 / hr
    2 - 9
    Poznań, Poland

    Services provided

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

    Focus Areas

    80% JavaScript
    10% Python
    10% SQL

    Pluscode specializes in Website Development and Web Design, consistently delivering exceptional website layouts and functionality. Client feedback highlights their meticulous approach, timely project management, and strong communication skills, emphasizing their commitment to achieving the best possible outcomes and customer satisfaction.

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  • Lightstack Logotype

    5.0 1 review
    $10,000+
    $50 - $99 / hr
    2 - 9
    Cape Town, South Africa

    Services provided

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

    Focus Areas

    100% JavaScript

    Lightstack is a mobile app development company noted for developing innovative solutions, such as identity verification apps, to streamline professional processes. Their reviews highlight a strong emphasis on transparency, effective communication, and valuable collaboration. An impressive 100% of reviewers appreciated their ability to suggest efficient alternatives and maintain personal chemistry, with no significant negative feedback reported.

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  • Appes Logotype

    5.0 1 review
    $10,000+
    $50 - $99 / hr
    2 - 9
    București, Romania

    Services provided

    30% Web Development
    30% Custom Software Development
    30% Mobile App Development +1
    10% IT Strategy Consulting

    Focus Areas

    50% JavaScript
    20% Redux
    20% SQL +2
    5% Java
    5% Swift

    Appes is a web development company specializing in front-end development and platform enhancement. The overall feedback is overwhelmingly positive, with 100% of reviews highlighting their effective project management, adaptability, and proactive approach. Notably, 23% user retention increase underscores their impactful work, with clients praising their communication skills and seamless integration with existing teams.

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  • Idaho Style Logotype

    5.0 1 review
    $1,000+
    $100 - $149 / hr
    2 - 9
    Boise, ID

    Services provided

    10% Web Development
    10% Branding
    10% Conversion Optimization +7
    10% Custom Software Development
    10% E-Commerce Development
    10% IoT Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    40% JavaScript
    20% Other programming & scripting languages
    20% PHP +2
    10% AJAX
    10% SQL

    Idaho Style is a web development company specializing in website development and search engine optimization. Their services are highly appreciated, with reviewers highlighting their responsive communication and willingness to accommodate client needs. Notably, 100% of reviewers praised their project management and effective communication.

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  • Synergic Softek Solutions Logotype

    5.0 3 reviews
    $5,000+
    $25 - $49 / hr
    50 - 249
    Kolkata, India

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +4
    10% Content Marketing
    10% Digital Strategy
    10% Mobile App Development
    10% Social Media Marketing

    Focus Areas

    20% JavaScript
    30% PHP
    25% AJAX +2
    15% ASP.NET
    10% XML

    Synergic Softek Solutions is a versatile software development company specializing in customized web solutions and app development. Overall, the feedback is overwhelmingly positive, with clients praising their efficiency, effective communication, and reasonable costs. Approximately 100% of reviewers mention their reliability and willingness to engage in collaborative problem-solving. The company is noted for delivering precise customizations and maintaining strong project management practices.

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  • Circle Square Logotype

    4.9 7 reviews
    $10,000+
    $50 - $99 / hr
    10 - 49
    London, England

    Services provided

    10% Web Development
    40% IT Staff Augmentation
    30% Custom Software Development +2
    10% E-Commerce Development
    10% Mobile App Development

    Focus Areas

    30% JavaScript
    15% Python
    10% C# +5
    10% Java
    10% PHP
    10% Ruby
    10% Swift
    5% Other programming & scripting languages

    Circle Square is a versatile technology solutions provider offering tailored software development services, including front-end and back-end development, MVP creation, and platform integration. Clients consistently highlight Circle Square’s rapid delivery, problem-solving aptitude, and effective communication, with over 90% of feedback being positive. Noteworthy is the company’s ability to deliver projects on time and within budget, along with a proactive approach to client collaboration and innovative solutions.

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  • DigiArtisan Logotype

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

    Services provided

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

    Focus Areas

    50% JavaScript
    40% Python
    10% Redux

    DigiArtisan is a web development company specializing in website design and coding. With a strong emphasis on customer service and flexibility, they consistently deliver projects on time and within budget. All reviewers expressed satisfaction, highlighting the company's excellent performance and value for cost.

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  • Technithunder Logotype

    5.0 24 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Ahmedabad, India

    Services provided

    25% Web Development
    25% Custom Software Development
    15% Mobile App Development +5
    10% IT Staff Augmentation
    10% UX/UI Design
    5% AI Development
    5% API Development
    5% E-Commerce Development

    Focus Areas

    25% JavaScript
    40% Typescript
    15% Python +2
    10% HTML5
    10% Redux

    Technithunder is a web development company offering services in custom website development, web programming, and full-stack web development. Reviews highlight their expertise in enhancing user experience, integrating advanced features, and consistent on-time delivery. With 100% positive feedback, clients praise their technical precision and creative solutions, emphasizing their alignment with project goals and seamless integration of branding and functionality.

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  • Rebel Trail Web Solutions Logotype

    5.0 6 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Toronto, Canada

    Services provided

    30% Web Development
    20% Web Design
    10% E-Commerce Development +4
    10% Graphic Design
    10% Low/No Code Development
    10% Mobile App Development
    10% Search Engine Optimization

    Focus Areas

    10% JavaScript
    50% PHP
    10% ASP.NET +3
    10% ColdFusion
    10% SQL
    10% XML

    Rebel Trail Web Solutions is a web development company specializing in custom website development and web application development. Client reviews highlight their excellent project management and communication skills, with 100% positive feedback on these aspects. Customers praise their expertise in delivering custom solutions and seamless integration with existing systems, although some suggest expanding in-house service offerings.

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  • Elite Web Design Logotype

    Elite Web Design

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

    Services provided

    20% Web Development
    80% Web Design

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% C++ +7
    10% Ember.js
    10% Java
    10% PHP
    10% Python
    10% Ruby
    10% SQL
    10% XML

    Elite Web Design is a web design company renowned for crafting visually appealing and high-converting websites. Feedback highlights impressive communication and efficient workflows, with 100% of reviewers noting a significant increase in conversion rates, such as a 25% rise, underscoring their effectiveness in achieving project goals.

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  • Bee Techy Logotype

    4.9 10 reviews
    $5,000+
    $50 - $99 / hr
    10 - 49
    Marina del Rey, CA

    Services provided

    25% Web Development
    25% AI Development
    25% Mobile App Development +2
    15% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    20% JavaScript
    20% HTML5
    20% Kotlin +2
    20% PHP
    20% Swift

    Bee Techy is a proficient web development company, specializing in Custom Website Development and Full-Stack Web Development. Reviews highlight their exceptional technical knowledge, effective project management, and responsive communication, with 100% of clients expressing satisfaction. Clients commend their ability to meet deadlines and deliver scalable and user-friendly solutions, such as integrating complex APIs and designing custom WordPress sites.

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  • Mitash Digital Logotype

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

    Services provided

    20% Web Development
    30% E-Commerce Development
    20% UX/UI Design +2
    20% Web Design
    10% Conversion Optimization

    Focus Areas

    15% JavaScript
    30% PHP
    15% AJAX +4
    10% Other programming & scripting languages
    10% Python
    10% SQL
    10% XML

    Mitash Digital is a web development company specializing in website development and hosting, with a focus on e-commerce platforms. Clients appreciate their responsive communication and efficient issue resolution, with 100% of reviews highlighting their reliable project management and ability to execute requests. However, there is room for improvement in technical issue reporting.

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  • ataraxy Logotype

    5.0 5 reviews
    $10,000+
    $50 - $99 / hr
    2 - 9
    Montevideo, Uruguay

    Services provided

    10% Web Development
    15% Product Design
    13% Low/No Code Development +10
    10% Custom Software Development
    10% Generative AI
    10% IT Strategy Consulting
    10% Mobile App Development
    5% AI Consulting
    5% Enterprise App Modernization
    5% IoT Development
    5% Wearable App Development
    1% AI Development
    1% Other Application Development

    Focus Areas

    10% JavaScript
    20% C#
    10% ASP.NET +10
    10% Python
    10% Typescript
    5% C++
    5% Kotlin
    5% Objective C
    5% Redux
    5% SQL
    5% Swift
    5% Visual Basic
    5% XML

    ataraxy is a web development company specializing in custom website development and web application development. They receive overwhelmingly positive feedback, with 100% of reviewers highlighting their responsive project management and ability to align with client goals. Notably, ataraxy's proficiency in full-stack web development and their proactive problem-solving skills consistently impress clients.

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  • Heavy Penguin Logotype

    5.0 3 reviews
    $1,000+
    $50 - $99 / hr
    2 - 9
    Ware, England

    Services provided

    30% Web Development
    20% E-Commerce Development
    10% Digital Strategy +4
    10% Logo
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    40% JavaScript
    40% PHP
    20% Other programming & scripting languages

    Heavy Penguin is a web development company specializing in custom website development and web design. Reviews highlight their effective communication and industry expertise, with 100% of clients expressing satisfaction with their projects. Clients commend their ability to tailor solutions, resulting in increased user visits and positive customer feedback.

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  • Valtorian Logotype

    5.0 18 reviews
    $10,000+
    $50 - $99 / hr
    10 - 49
    Sumy, Ukraine

    Services provided

    10% Web Development
    10% AI Agents
    10% Application Testing +7
    10% Custom Software Development
    10% Low/No Code Development
    10% Market Research
    10% Mobile App Development
    10% Product Design
    10% UX/UI Design
    10% Web Design

    Focus Areas

    100% JavaScript

    Valtorian is a web development company specializing in full-stack web development, web application development, and custom website development. Reviews highlight their efficiency and expertise, with approximately 100% positive feedback noting their excellent project management, timely delivery, and customer-oriented approach. Clients commend their problem-solving skills, technical depth, and the ability to create scalable, user-friendly digital solutions.

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  • PROGMATIQ Logotype

    5.0 5 reviews
    $5,000+
    $50 - $99 / hr
    Freelancer
    Rzeszów, Poland

    Services provided

    90% Web Development
    10% Web Design

    Focus Areas

    40% JavaScript
    40% PHP
    10% AJAX +1
    10% SQL

    PROGMATIQ is a web development company specializing in Website Development and Web Design, emphasizing custom solutions and responsive design. Client feedback highlights their professionalism, communication, and attention to detail, with a 100% satisfaction rate across reviews. Many clients praised their project management skills and technical expertise, particularly their ability to meet deadlines and provide ongoing support.

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  • Mobix Software Studio Logotype

    4.8 3 reviews
    $10,000+
    $50 - $99 / hr
    10 - 49
    Recife, Brazil

    Services provided

    40% Web Development
    40% Mobile App Development
    20% UX/UI Design

    Focus Areas

    90% JavaScript
    10% Other programming & scripting languages

    Mobix Software Studio is a versatile software development company known for its expertise in digital transformation, strategic guidance, and mobile app development. The company has received overwhelmingly positive feedback, with clients highlighting their effective project management, commitment, and comprehensive knowledge in technology and innovation. Approximately 100% of reviewers praised their problem-solving capabilities and seniority in software engineering.

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  • Dapplica Logotype

    5.0 3 reviews
    $10,000+
    $50 - $99 / hr
    10 - 49
    L'viv, Ukraine

    Services provided

    10% Web Development
    70% Blockchain
    10% AR/VR Development +1
    10% Mobile App Development

    Focus Areas

    50% JavaScript
    25% C++
    13% C# +1
    12% Swift

    Dapplica is a web and blockchain development company specializing in EOSIO technology, known for their flexibility and strong project management skills. Their work is highly regarded, with 100% of reviewers expressing satisfaction, particularly highlighting their expertise in building prototypes with full-stack web development capabilities.

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  • Astute Myndz Logotype

    Astute Myndz

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

    Services provided

    40% Web Development
    30% E-Commerce Development
    30% Mobile App Development

    Focus Areas

    20% JavaScript
    25% ASP.NET
    25% PHP +2
    15% C++
    15% Java

    Astute Myndz is a Web Development company that specializes in Web Design and Custom Website Development. Their reviews highlight impressive project management, adaptability, and excellent communication, with 100% of clients satisfied with the results. They are praised for their responsiveness and willingness to incorporate client feedback, ensuring efficient and polished web solutions.

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  • 11:11 Studio Logotype

    5.0 1 review
    $10,000+
    $100 - $149 / hr
    2 - 9
    London, England

    Services provided

    10% Web Development
    30% Branding
    30% Web Design +2
    15% Content Marketing
    15% UX/UI Design

    Focus Areas

    20% JavaScript
    20% HTML5
    20% PHP +2
    20% Ruby
    20% jquery

    11:11 Studio is a web development company specializing in custom website development and web design. Their reviews highlight a 100% positive feedback rate, emphasizing their understanding of client needs, efficient project management, and the ability to deliver functional and stable web solutions. The company is praised for its personable approach and technical fluency.

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  • Rough Works Logotype

    5.0 3 reviews
    $5,000+
    $100 - $149 / hr
    2 - 9
    Vancouver, Canada

    Services provided

    25% Web Development
    20% E-Commerce Development
    20% Search Engine Optimization +3
    15% Low/No Code Development
    10% Market Research
    10% Web Design

    Focus Areas

    10% JavaScript
    25% HTML5
    20% PHP +6
    20% SQL
    5% AJAX
    5% Python
    5% Ruby
    5% XML
    5% jquery

    Rough Works is a specialized web development company known for its expertise in custom website development, web programming, and SEO. With a remarkable 100% positive feedback rate, clients praise its professionalism, timely delivery, and effective project management. Notably, 100% of reviewers commend their ability to fulfill complex requirements, such as integrating CRM systems and enhancing SEO performance.

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  • ARGOsoft Group Logotype

    5.0 4 reviews
    $1,000+
    $25 - $49 / hr
    2 - 9
    San Salvador, El Salvador

    Services provided

    15% Web Development
    15% IT Strategy Consulting
    10% Digital Strategy +6
    10% E-Commerce Development
    10% Mobile App Development
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

    29% JavaScript
    29% Python
    28% PHP +1
    14% C#

    ARGOsoft Group is a web development company specializing in Website Development, Web Design, and Full-Stack Web Development. Across various projects, clients consistently praise their professionalism, timely delivery, and adaptability. Notably, 100% of reviewers commend their project management and customer service, citing excellent communication and a proactive approach. Clients appreciate their ability to exceed expectations and provide quality service, driving measurable outcomes like increased customer engagement and improved turnover.

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  • Midnay Logotype

    4.9 6 reviews
    $1,000+
    $50 - $99 / hr
    10 - 49
    Thenhipalam, India

    Services provided

    100% Web Development

    Focus Areas

    20% JavaScript
    55% PHP
    10% AJAX +2
    10% Other programming & scripting languages
    5% SQL

    Midnay is a proficient web development company specializing in custom website development, web application development, and front-end and back-end development. Client feedback consistently highlights their efficient project management, professionalism, and ability to deliver high-quality, bug-free websites on time. Approximately 100% of the reviewers commend their understanding of client needs and dedication to project success.

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  • A-Devgroup Logotype

    5.0 1 review
    $5,000+
    $50 - $99 / hr
    10 - 49
    Odesa, Ukraine

    Services provided

    20% Web Development
    20% API Development
    20% Application Management & Support +2
    20% Custom Software Development
    20% Mobile App Development

    Focus Areas

    30% JavaScript
    20% PHP
    10% AJAX +4
    10% HTML5
    10% Python
    10% Typescript
    10% jquery

    A-Devgroup is a web development company specializing in custom website development and online booking systems. The reviews indicate a 100% positive feedback, highlighting their professionalism, effective communication, and attention to detail. Notably, 100% of reviewers praised their responsiveness and ability to deliver projects on time.

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  • Pixels & Coconuts Logotype

    5.0 4 reviews
    $1,000+
    $100 - $149 / hr
    2 - 9
    Zürich, Switzerland

    Services provided

    35% Web Development
    25% Web Design
    20% E-Commerce Development +2
    10% Graphic Design
    10% Low/No Code Development

    Focus Areas

    50% JavaScript
    50% PHP

    Pixels & Coconuts specializes in Website Development and Custom Website Development, providing services such as Full-Stack Web Development with a focus on Web Design and Web Programming. The company has received 100% positive feedback, with clients praising their outstanding communication and timely delivery. Approximately 90% of reviewers highlight their professionalism and unique collaborative approach.

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  • SharedTech Logotype

    5.0 2 reviews
    $25,000+
    $50 - $99 / hr
    50 - 249
    Riyadh, Saudi Arabia

    Services provided

    30% Web Development
    25% UX/UI Design
    15% Web Design +3
    10% Custom Software Development
    10% IT Managed Services
    10% Low/No Code Development

    Focus Areas

    15% JavaScript
    60% PHP
    25% AJAX

    SharedTech is recognized for its expertise in Website Development and Web Design, offering services that include developing web portals with a focus on user experience (UX) design. The reviews highlight their professional project management, timely delivery, and ability to provide good value for cost, reflecting high customer satisfaction and usability.

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  • QPMSoft Logotype

    5.0 4 reviews
    $5,000+
    $50 - $99 / hr
    2 - 9
    Kyiv, Ukraine

    Services provided

    50% Web Development
    20% API Development
    10% Application Management & Support +2
    10% Application Testing
    10% Custom Software Development

    Focus Areas

    30% JavaScript
    50% PHP
    10% C# +1
    10% Typescript

    QPMSoft is a web development company specializing in custom website development and web application integration. The company has received overwhelmingly positive feedback, with 100% of reviewers praising their strong project management, seamless integration, and exceptional communication. Clients were particularly impressed by the leadership and expertise of Max, highlighting his ability to deliver efficient solutions promptly.

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  • Devessence Logotype

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

    Services provided

    20% Web Development
    50% Custom Software Development
    20% Cloud Consulting & SI +1
    10% Application Testing

    Focus Areas

    15% JavaScript
    40% C#
    30% ASP.NET +1
    15% Typescript

    Devessence is a software development company specializing in creating cloud-based SaaS solutions, particularly for the music industry. The reviews highlight their exceptional product development and commitment to customer service, with 100% of feedback reflecting positive remarks about their ability to deliver a high-quality product on time and adapt to changing project requirements.

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  • Spawn Solutions Logotype

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

    Services provided

    15% Web Development
    20% Blockchain
    15% BI & Big Data Consulting & SI +5
    15% Custom Software Development
    15% IT Staff Augmentation
    10% AI Development
    5% IT Strategy Consulting
    5% Mobile App Development

    Focus Areas

    20% JavaScript
    20% Python
    10% Rust +9
    10% Typescript
    5% ASP.NET
    5% C#
    5% Ember.js
    5% Go
    5% Other programming & scripting languages
    5% PHP
    5% Redux
    5% Swift

    Spawn Solutions is a digital platform development company specializing in creating comprehensive solutions for streamlining business processes. According to reviews, 100% of feedback highlights their exceptional project management, professionalism, and innovative problem-solving approach. Their ability to tailor solutions to unique business needs while maintaining clear communication and responsiveness is highly commendable.

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  • Simply Smart Technology Logotype

    5.0 5 reviews
    $1,000+
    $100 - $149 / hr
    2 - 9
    Chicago, IL

    Services provided

    10% Web Development
    60% IT Managed Services
    10% Cloud Consulting & SI +2
    10% Cybersecurity
    10% IT Strategy Consulting

    Focus Areas

    10% JavaScript
    50% ASP.NET
    20% C# +1
    20% SQL

    Simply Smart Technology is an IT managed services provider praised for their responsiveness, expertise, and customer-centric approach. Approximately 100% of reviews commend their ability to manage IT systems effectively, while around 80% highlight their proactive problem-solving and the personalized care they offer clients. Clients also appreciate their ability to seamlessly integrate with existing company infrastructures, fostering stable and reliable IT environments.

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  • MicroPyramid Logotype

    4.3 2 reviews
    $1,000+
    $25 - $49 / hr
    50 - 249
    Hyderabad, India

    Services provided

    25% Web Development
    20% CRM Consulting and SI
    20% E-Commerce Development +2
    20% Mobile App Development
    15% Application Management & Support

    Focus Areas

    30% JavaScript
    30% Python
    20% Apex +1
    20% Redux

    MicroPyramid is a web development company specializing in both front-end and back-end development, as well as custom website development and integration. With a focus on delivering clean and user-friendly web applications, 100% of the feedback highlights their effective communication and responsiveness. While praised for their technical expertise, some clients suggest they could be more proactive in offering alternative solutions.

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  • Colour And Code Logotype

    Colour And Code

    5.0 10 reviews
    $5,000+
    $100 - $149 / hr
    2 - 9

    Services provided

    10% Web Development
    75% Web Design
    15% UX/UI Design

    Focus Areas

    15% JavaScript
    35% HTML5
    30% jquery +2
    10% Java
    10% Typescript

    Colour And Code is a web development company offering services in website design, custom website development, and SEO optimization. Consistently praised for their creativity, strategic approach, and responsive communication, 100% of clients report positive feedback. Their work excels in enhancing online presence and user engagement, with noticeable improvements in website traffic and client satisfaction.

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  • Adcetera Logotype

    4.1 4 reviews
    $25,000+
    $100 - $149 / hr
    50 - 249
    Houston, TX

    Services provided

    20% Web Development
    20% Digital Strategy
    20% Media Planning & Buying +5
    10% AI Development
    10% Branding
    10% Search Engine Optimization
    5% Conversion Optimization
    5% Social Media Marketing

    Focus Areas

    29% JavaScript
    71% PHP

    Adcetera is a web development company specializing in website refreshes and multimedia solutions. They impressively raised brand awareness and increased web traffic for a global engineering client, with 100% of the feedback noting their strong cultural fit and effective project management. Clients praise their timely deliveries and communication.

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  • OA Softwares Logotype

    OA Softwares

    4.8 2 reviews
    $10,000+
    $50 - $99 / hr
    10 - 49

    Services provided

    20% Web Development
    40% Custom Software Development
    15% Ecommerce Marketing +2
    15% Mobile App Development
    10% UX/UI Design

    Focus Areas

    35% JavaScript
    33% Other programming & scripting languages
    32% Typescript

    OA Softwares is a web development company known for transforming websites into highly functional web applications with enhanced UI/UX and efficient back-end systems. Their reviews highlight a 100% satisfaction rate, emphasizing their structured project management and strategic partnership approach. Clients commend their responsiveness, professionalism, and focus on delivering improved performance and user engagement.

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

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We evaluate service providers using a structured methodology that combines:

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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 The Software House
4 Brainhub
5 Xmartlabs
6 GeekyAnts
7 FocusReactive
8 Lizard Global
9 PopArt Studio
10 Softonix
11 HTMLPanda
12 INOXOFT
13 Vention
14 Cleveroad
15 Scopic

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

    60% Web Development
    50% JavaScript
    40% Other
    View Profile Visit Website
  3. The Software House Logotype

    The Software House

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

    Ability to deliver

    39.6/40.0
    19.8/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    40% Web Development
    60% JavaScript
    60% Other
    View Profile Visit Website
  4. Brainhub Logotype

    Brainhub

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

    Ability to deliver

    38.7/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

    45% Web Development
    75% JavaScript
    55% 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. 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

    20% Web Development
    40% JavaScript
    80% Other
    View Profile Visit Website
  7. FocusReactive Logotype

    FocusReactive

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

    Ability to deliver

    38.7/40.0
    19.4/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

    50% Web Development
    90% JavaScript
    50% Other
    View Profile Visit Website
  8. Lizard Global Logotype

    Lizard Global

    $10,000+
    $50 - $99 / hr
    50 - 249
    Amsterdam, Netherlands

    Ability to deliver

    39.1/40.0
    19.8/20 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
    Warszawa, Poland

    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. 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
  12. INOXOFT Logotype

    INOXOFT

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

    Ability to deliver

    39.2/40.0
    19.2/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  14. Cleveroad Logotype

    Cleveroad

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

    Ability to deliver

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

    Service focus

    30% Web Development
    15% JavaScript
    70% Other
    View Profile Visit Website
  15. Scopic Logotype

    Scopic

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

    Ability to deliver

    38.9/40.0
    19.2/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    25% Web Development
    25% JavaScript
    75% Other
    View Profile Visit Website
  16. 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
  17. Boldare Logotype

    Boldare

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

    Ability to deliver

    39.6/40.0
    19.8/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    20% Web Development
    50% JavaScript
    80% Other
    View Profile Visit Website
  18. unicrew Logotype

    unicrew

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

    Ability to deliver

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

    Service focus

    20% Web Development
    50% JavaScript
    80% Other
    View Profile Visit Website
  19. 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
  20. Techuz InfoWeb Pvt. Ltd. Logotype

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

    36.1/40.0
    16.4/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  21. Toptal Logotype

    Toptal

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

    Ability to deliver

    38.1/40.0
    18.2/20 Reviews
    9.9/10 Clients & Experience
    10/10 Market Presence

    Service focus

    15% Web Development
    25% JavaScript
    85% Other
    View Profile Visit Website
  22. SpdLoad Logotype

    SpdLoad

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

    Ability to deliver

    36/40.0
    16.2/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    45% Web Development
    50% JavaScript
    55% Other
    View Profile Visit Website
  23. The Frontend Company Logotype

    The Frontend Company

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

    Ability to deliver

    37.5/40.0
    17.8/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    55% Web Development
    80% JavaScript
    45% Other
    View Profile Visit Website
  24. PowerGate Software Logotype

    PowerGate Software

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

    Ability to deliver

    38.3/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    9.5/10 Market Presence

    Service focus

    30% Web Development
    21% JavaScript
    70% Other
    View Profile Visit Website
  25. 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
  26. 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

    45% Web Development
    10% JavaScript
    55% Other
    View Profile Visit Website
  27. Binary Studio Logotype

    Binary Studio

    $25,000+
    $50 - $99 / hr
    50 - 249
    L'viv, Ukraine

    Ability to deliver

    39/40.0
    19.2/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    30% Web Development
    40% JavaScript
    70% Other
    View Profile Visit Website
  28. Vincit Logotype

    Vincit

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

    Ability to deliver

    36.1/40.0
    16.2/20 Reviews
    10/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

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

    Naturaily

    $25,000+
    $50 - $99 / hr
    10 - 49
    Wrocław, Poland

    Ability to deliver

    38.1/40.0
    18.4/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    40% Web Development
    70% JavaScript
    60% 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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