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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 10, 2026
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22,249 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 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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  • ESTEROX LLC Logotype

    4.8 11 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Yerevan, Armenia

    Services provided

    40% Web Development
    20% Mobile App Development
    15% UX/UI Design +3
    10% E-Commerce Development
    10% Web Design
    5% Application Management & Support

    Focus Areas

    30% JavaScript
    20% PHP
    20% Python +3
    10% AJAX
    10% Redux
    10% SQL

    ESTEROX LLC is a web development company specializing in custom website development and web application development. With approximately 100% positive reviews, clients consistently praise their responsive communication, professionalism, and technical expertise. Their ability to deliver projects on time and their commitment to providing valuable advice are frequently highlighted by satisfied clients.

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  • Squillion Technology Logotype

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

    Services provided

    35% Web Development
    45% Mobile App Development
    10% Custom Software Development +1
    10% UX/UI Design

    Focus Areas

    25% JavaScript
    20% Kotlin
    20% Swift +7
    5% AJAX
    5% C
    5% PHP
    5% Python
    5% Redux
    5% Typescript
    5% XML

    Squillion Technology is a web development company specializing in web programming and full-stack web development. Reviews highlight their dedication to innovation, excellent communication, and timely delivery, with 100% positive feedback emphasizing their proactive approach and commitment to client satisfaction.

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  • Haefele Software Logotype

    4.8 12 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249
    Cape Town, South Africa

    Services provided

    10% Web Development
    40% Custom Software Development
    15% Enterprise App Modernization +6
    10% API Development
    5% Document Digitization & Management
    5% IT Staff Augmentation
    5% IT Strategy Consulting
    5% Mobile App Development
    5% Product Design

    Focus Areas

    20% JavaScript
    55% C#
    10% ASP.NET +2
    10% SQL
    5% Typescript

    Haefele Software is a web development company specializing in custom website development, web application development, and both front-end and back-end development. The reviews highlight their professional, knowledgeable, and experienced team, achieving successful project outcomes with effective communication and stakeholder management. Overall, 100% of the feedback is positive, emphasizing their skills, mindset, and focus on continuous improvement.

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  • Untitled Kingdom Logotype

    4.9 6 reviews
    $25,000+
    $50 - $99 / hr
    50 - 249
    Kraków, Poland

    Services provided

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

    Focus Areas

    11% JavaScript
    21% Kotlin
    21% Swift +7
    11% Java
    11% Ruby
    5% AJAX
    5% Python
    5% Redux
    5% SQL
    5% Typescript

    Untitled Kingdom is a custom website development company, offering services in web and application development. The feedback from their reviews is overwhelmingly positive, with 100% of the reviewers noting timely project delivery and budget adherence. Clients appreciate their effective project management and cultural alignment, highlighting their successful completion of projects with clear, strategic roadmaps.

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  • Calder Solutions Logotype

    5.0 13 reviews
    $25,000+
    $150 - $199 / hr
    10 - 49
    Ada, MI

    Services provided

    10% Web Development
    20% Custom Software Development
    20% Mobile App Development +4
    15% IT Strategy Consulting
    15% UX/UI Design
    10% AR/VR Development
    10% Other Digital Marketing

    Focus Areas

    10% JavaScript
    10% C#
    10% Ember.js +7
    10% Java
    10% Kotlin
    10% Python
    10% Redux
    10% SQL
    10% Swift
    10% Typescript

    Calder Solutions is a web development company specializing in Website Development and Web Design, known for their effective Custom Website Development and Full-Stack Web Development services. They receive predominantly positive feedback, with over 90% of clients highlighting their professionalism, adherence to deadlines, and excellent project management. Many reviewers commend their ability to anticipate needs and provide creative solutions, with specific praise for team members like Brett and Kaylee.

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  • Design Planet Logotype

    5.0 6 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Kyiv, Ukraine

    Services provided

    40% Web Development
    40% Web Design
    10% Graphic Design +1
    10% Mobile App Development

    Focus Areas

    50% JavaScript
    10% AJAX
    10% Kotlin +3
    10% PHP
    10% Python
    10% Swift

    Design Planet is a proficient web development company with a focus on custom website development, web design, and web application development. The reviews indicate a highly positive reception, with 100% of clients praising their professionalism, attention to detail, and thorough project management. Clients commend their ability to deliver complex projects on time, with 80% mentioning their impressive technical skills and adaptability to client needs.

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  • Stone Digital Logotype

    5.0 24 reviews
    $5,000+
    $100 - $149 / hr
    2 - 9
    Pyrmont, Australia

    Services provided

    50% Web Development
    50% Web Design

    Focus Areas

    20% JavaScript
    40% PHP
    20% HTML5 +1
    20% SQL

    Stone Digital is a web development company that specializes in custom website development, web design, and web programming. Across varied projects, they are consistently praised for timely delivery, clear communication, and innovative solutions, with 100% of reviewers recommending their services. Approximately 75% of clients highlight Stone Digital's ability to deliver complex solutions, emphasizing their commitment to meeting client needs and adapting to evolving project scopes.

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  • I Can Infotech Logotype

    4.9 11 reviews
    $5,000+
    $25 - $49 / hr
    50 - 249
    Ahmedabad, India

    Services provided

    25% Web Development
    25% AI Development
    25% IT Staff Augmentation +1
    25% Mobile App Development

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% Java +8
    10% Kotlin
    10% Objective C
    10% PHP
    10% Redux
    10% Swift
    10% Typescript
    5% AJAX
    5% SQL

    I Can Infotech is a web development company specializing in custom website development and web application development. Reviews highlight their promptness and responsive communication, with 100% of reviewers noting successful project outcomes and effective project management. Some feedback suggests potential improvements in accommodating different time zones.

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  • HuskyJam Logotype

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

    Services provided

    40% Web Development
    30% Custom Software Development
    20% Mobile App Development +1
    10% AI Development

    Focus Areas

    25% JavaScript
    35% Python
    15% Kotlin +2
    15% Swift
    10% Redux

    HuskyJam is a full-stack web development company, known for its efficient and rapid project execution. Garnering 100% positive feedback, reviewers consistently highlight their strong communication and expertise in web programming. They have been praised for delivering a promotional website within a mere three days, significantly boosting KPIs for clients.

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  • ETECH ALL Logotype

    ETECH ALL

    4.9 8 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    25% Web Development
    25% Web Design
    20% Custom Software Development +3
    10% E-Commerce Development
    10% Low/No Code Development
    10% Mobile App Development

    Focus Areas

    40% JavaScript
    40% PHP
    20% SQL

    ETECH ALL is a web development company specializing in custom website development, full-stack web development, and web application development. The company has received overwhelmingly positive feedback, with 100% of reviewers praising their responsiveness, attention to detail, and ability to deliver accurate and user-friendly websites. Clients consistently highlight ETECH ALL's impressive project management and timely communication.

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  • Sunlight Media LLC Logotype

    5.0 9 reviews
    $1,000+
    $50 - $99 / hr
    2 - 9
    Los Angeles, CA

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% IT Managed Services +2
    20% Market Research
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% Other programming & scripting languages +2
    20% PHP
    20% SQL

    Sunlight Media LLC is a proficient web development company specializing in Website Development, Web Design, and Web Programming. Approximately 100% of client reviews highlight their exceptional responsiveness and technical expertise. Clients commend their ability to deliver user-friendly, visually appealing websites on time and within budget, enhancing online visibility and functionality. Sunlight Media’s commitment to customer satisfaction and adaptability is consistently praised by diverse business sectors.

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  • The Story Web Design Logotype

    5.0 31 reviews
    $5,000+
    $100 - $149 / hr
    2 - 9
    Ottawa, Canada

    Services provided

    25% Web Development
    55% Web Design
    10% Branding +1
    10% Marketing Strategy

    Focus Areas

    10% JavaScript
    45% SQL
    35% PHP +1
    10% XML

    The Story Web Design is a web development company specializing in custom website development and web design. Their reviews indicate a strong focus on delivering visually appealing, functional websites that enhance user experience and are easy to navigate. Positive feedback, present in 100% of reviews, highlights their effective project management, creativity, and strong communication, ensuring clients' expectations are exceeded consistently.

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  • SOLVVE Logotype

    SOLVVE

    4.9 9 reviews
    $5,000+
    $25 - $49 / hr
    50 - 249

    Services provided

    25% Web Development
    55% Mobile App Development
    20% CRM Consulting and SI

    Focus Areas

    25% JavaScript
    25% ASP.NET
    25% Java +3
    10% PHP
    8% Objective C
    7% Swift

    SOLVVE is a proficient Web Development company, praised for its expertise in full-stack development and AI integration. The company consistently receives positive feedback, with 100% of reviewers commending their professionalism and communication skills. Clients notably appreciate SOLVVE's ability to suggest ongoing improvements, ensuring project success and maintaining a competitive edge.

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  • ColorWhistle Logotype

    5.0 26 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Coimbatore, India

    Services provided

    34% Web Development
    33% Digital Strategy
    33% UX/UI Design

    Focus Areas

    50% JavaScript
    50% PHP

    ColorWhistle is a distinguished web development company specializing in Website Development, Custom Website Development, and Web Application Development. The company has garnered overwhelmingly positive feedback, with clients praising their professionalism, responsiveness, and attention to detail. Approximately 90% of reviewers commend their ability to deliver projects on time and within budget, highlighting their proficiency in both front-end and back-end development.

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  • Seven Peaks Logotype

    4.8 26 reviews
    $25,000+
    $50 - $99 / hr
    50 - 249
    Bangkok, Thailand

    Services provided

    20% Web Development
    30% Mobile App Development
    20% Custom Software Development +3
    10% Application Testing
    10% Cloud Consulting & SI
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    25% C#
    25% Kotlin +3
    20% Swift
    10% Java
    10% Typescript

    Seven Peaks is a web development company recognized for its expertise in creating modern and user-friendly websites. With 100% positive reviews, clients commend their responsiveness, creativity, and collaborative approach. They excel in custom website development, with reviewers highlighting their attention to detail and industry understanding. Notably, 100% of reviewers praised their project management skills and timely delivery.

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  • Vermonster Logotype

    5.0 3 reviews
    $25,000+
    $150 - $199 / hr
    10 - 49
    Boston, MA

    Services provided

    40% Web Development
    20% Custom Software Development
    20% UX/UI Design +1
    20% Web Design

    Focus Areas

    50% JavaScript
    50% Ruby

    Vermonster is a web development company specializing in custom website development and full-stack web development. Their exceptional service is highlighted by their effective communication and innovative solutions, with 100% positive feedback in their reviews. Reviewers consistently praise their project management skills and ability to exceed expectations, particularly in web application development and backend development.

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  • SEP Logotype

    5.0 11 reviews
    $100,000+
    $150 - $199 / hr
    50 - 249
    Carmel, IN

    Services provided

    15% Web Development
    40% Custom Software Development
    20% AI Development +2
    15% Mobile App Development
    10% Enterprise App Modernization

    Focus Areas

    20% JavaScript
    15% C#
    10% Kotlin +9
    10% Swift
    10% Typescript
    5% ASP.NET
    5% C++
    5% Java
    5% Other programming & scripting languages
    5% Python
    5% Ruby
    5% SQL

    SEP is a full-stack web development company renowned for its expertise and seamless integration into client teams. They are highly praised, with 100% positive feedback, particularly for accelerating project timelines and meeting customer expectations. Reviewers consistently highlight SEP's experienced team and impressive delivery, with over 90% mentioning their ability to adapt to existing project management styles.

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  • YES IT Labs LLC Logotype

    YES IT Labs LLC

    4.8 33 reviews
    $5,000+
    $25 - $49 / hr
    50 - 249

    Services provided

    10% Web Development
    20% Custom Software Development
    20% ERP Consulting and SI +3
    20% Mobile App Development
    20% Web Design
    10% Search Engine Optimization

    Focus Areas

    15% JavaScript
    30% PHP
    12% SQL +4
    11% ASP.NET
    11% Python
    11% Swift
    10% HTML5

    YES IT Labs LLC is a comprehensive Web Development company specializing in custom solutions like Web Application Development and technical infrastructure improvements. The feedback is overwhelmingly positive, with 100% of reviewers highlighting their strong project management, responsiveness, and value for cost. A notable 50% mentioned their effective communication and collaboration, while improvements in system stability and compliance were key results of their projects.

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  • OAK THEORY Logotype

    4.9 18 reviews
    $25,000+
    $100 - $149 / hr
    10 - 49
    Madison, NJ

    Services provided

    10% Web Development
    20% AI Consulting
    20% Branding +4
    20% UX/UI Design
    20% Web Design
    5% AI Development
    5% Custom Software Development

    Focus Areas

    50% JavaScript
    50% Python

    OAK THEORY is a distinguished web development and design firm, excelling in custom website development, branding, and digital strategy. Clients consistently praise their professionalism, attention to detail, and collaborative approach, with 100% of reviews highlighting their strategic creativity and cultural understanding. Their ability to deliver projects on time and build genuine partnerships makes them a standout choice for development and design needs.

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  • 30Hills Logotype

    4.9 6 reviews
    $25,000+
    $50 - $99 / hr
    10 - 49
    Beograd, Serbia

    Services provided

    10% Web Development
    20% Custom Software Development
    20% Product Design +7
    15% Mobile App Development
    10% UX/UI Design
    5% Application Testing
    5% Business Consulting
    5% IT Strategy Consulting
    5% Other Application Development
    5% Web Design

    Focus Areas

    50% JavaScript
    10% Objective C
    10% Python +3
    10% SQL
    10% Swift
    10% Typescript

    30Hills is a web development company specializing in creating mobile applications and back-office web applications. Clients commend their professionalism and persistence, with 100% of reviewers highlighting their strong project management skills and ability to adapt to client needs, resulting in successful project outcomes. Despite early concerns, feedback indicates satisfaction with their comprehensive execution and delivery.

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  • AndPlus, An Ensono Company Logotype

    4.9 24 reviews
    $100,000+
    $150 - $199 / hr
    50 - 249
    Southborough, MA

    Services provided

    30% Web Development
    50% Enterprise App Modernization
    20% Custom Software Development

    Focus Areas

    20% JavaScript
    20% C++
    20% Java +6
    10% C#
    10% Swift
    5% ASP.NET
    5% C
    5% Python
    5% SQL

    AndPlus, An Ensono Company, is a full-stack web development firm specializing in web application development, systems integration, and custom website development. Reviewers consistently praise their professionalism, high knowledge level, and systematic approach, with 80% expressing satisfaction with their end-to-end project management. However, some noted their higher costs compared to offshore alternatives. Notably, 70% of clients highlight their ability to adapt and provide valuable long-term solutions.

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  • Moqod | Software Development Logotype

    Moqod | Software Development

    4.5 6 reviews
    $25,000+
    $50 - $99 / hr
    50 - 249

    Services provided

    20% Web Development
    20% IT Staff Augmentation
    20% Mobile App Development +4
    15% AR/VR Development
    10% AI Development
    10% Custom Software Development
    5% Cloud Consulting & SI

    Focus Areas

    33% JavaScript
    33% Objective C
    22% Python +1
    12% PHP

    Moqod | Software Development is a versatile software development company specializing in mobile app and platform development, with notable experience in iOS, Android, and web technologies. The reviews highlight their flexibility, technical expertise, and ability to provide creative solutions. A significant 83% of reviews praise their proactive communication and project management skills, while 17% suggest room for improvement in communication and project management clarity. Overall, Moqod is commended for delivering high-quality projects and maintaining strong client relationships.

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  • Cyboticx Logotype

    5.0 46 reviews
    $10,000+
    $100 - $149 / hr
    10 - 49
    Austin, TX

    Services provided

    10% Web Development
    15% AI Development
    15% Mobile App Development +6
    15% Search Engine Optimization
    10% Custom Software Development
    10% Low/No Code Development
    10% UX/UI Design
    10% Web Design
    5% Branding

    Focus Areas

    25% JavaScript
    50% Typescript
    25% Python

    Cyboticx is a versatile web development company specializing in custom website development, web application development, and web programming. The feedback is overwhelmingly positive, with 100% of reviewers highlighting their effective communication, technical expertise, and adherence to deadlines. Notably, 80% of clients praised their innovative problem-solving and design capabilities. Cyboticx's commitment to client satisfaction and project success makes them a reliable partner for website and online development projects.

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  • INSAIM DESIGN Logotype

    5.0 18 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Lisboa, Portugal

    Services provided

    10% Web Development
    70% UX/UI Design
    14% Low/No Code Development +2
    5% IT Strategy Consulting
    1% Web Design

    Focus Areas

    50% JavaScript
    50% PHP

    INSAIM DESIGN is a web development company specializing in custom website development, web design, and full-stack web development. Reviews indicate that 100% of clients appreciate their creativity, professionalism, and proactive communication, highlighting their ability to deliver projects on time and meet client needs effectively. Around 20% of reviews suggest improvements in project management, particularly in maintaining consistent communication and proactive guidance.

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  • Devix Digital Logotype

    4.6 42 reviews
    $10,000+
    $25 - $49 / hr
    10 - 49
    Khmel'nyts'kyi, Ukraine

    Services provided

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

    Focus Areas

    50% JavaScript
    20% PHP
    15% Python +2
    10% HTML5
    5% Typescript

    Devix Digital is a professional web development company with a strong focus on Website Development, Web Design, and Online Development services. Across multiple reviews, 100% of clients commend their exceptional project management, timely delivery, and excellent communication. Approximately 90% of reviews highlight their ability to exceed expectations and adaptability, indicating a highly positive client experience.

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  • Vauldex Technologies Inc. Logotype

    4.9 5 reviews
    $5,000+
    $25 - $49 / hr
    50 - 249
    Cebu City, Philippines

    Services provided

    40% Web Development
    30% Custom Software Development
    15% Mobile App Development +3
    5% Blockchain
    5% E-Commerce Development
    5% Enterprise App Modernization

    Focus Areas

    10% JavaScript
    20% Scala
    10% Java +9
    10% PHP
    10% SQL
    10% Typescript
    5% C
    5% C++
    5% Kotlin
    5% Python
    5% Swift
    5% jquery

    Vauldex is a web development company specializing in consultancy and application management to enhance productivity. The feedback for Vauldex is unanimously positive, highlighting a 30% increase in productivity and their effective project management. Impressively, 100% of reviewers note their responsiveness and helpfulness, with no suggested areas for improvement.

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  • Etelligens Technologies Logotype

    5.0 3 reviews
    $1,000+
    $25 - $49 / hr
    50 - 249
    Greater Noida, India

    Services provided

    40% Web Development
    40% Mobile App Development
    10% Custom Software Development +1
    10% Low/No Code Development

    Focus Areas

    40% JavaScript
    25% Swift
    20% PHP +2
    10% Python
    5% XML

    Etelligens Technologies is a software development company specializing in building complex applications and systems, such as E-commerce solutions, mobile apps, and blockchain dApps. Overall, their reviews indicate high satisfaction with their technical expertise, communication, and availability, with over 90% of feedback being positive. However, there is some room for improvement in design aspects. The company is praised for its emotional intelligence and effective project management.

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  • Freshcode Logotype

    Freshcode

    5.0 23 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249

    Services provided

    80% Web Development
    10% E-Commerce Development
    10% Low/No Code Development

    Focus Areas

    35% JavaScript
    20% Elixir
    20% Typescript +2
    15% SQL
    10% Other programming & scripting languages

    Freshcode is a web development company specializing in full-stack and custom web application development. Across their reviews, 100% of clients praise their technical expertise, communication, and ability to integrate complex features efficiently. Notably, over 60% highlight their exceptional project management and adaptability to client needs, underscoring their commitment to delivering user-friendly and robust solutions on time and within budget.

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  • Appycodes Logotype

    5.0 18 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49
    Siliguri, India

    Services provided

    25% Web Development
    25% Mobile App Development
    15% Custom Software Development +3
    15% E-Commerce Development
    10% Application Management & Support
    10% Search Engine Optimization

    Focus Areas

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

    Appycodes is a proficient web development company specializing in website development, web application development, and custom website development solutions. With a remarkable success rate, approximately 100% of clients praise their communication, timely delivery, and reliability. Themes of project management efficiency, technical excellence, and proactive problem-solving are consistently highlighted across reviews.

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  • Tenup Software Services Logotype

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

    Services provided

    15% Web Development
    25% Custom Software Development
    25% Enterprise App Modernization +2
    20% Application Management & Support
    15% Cloud Consulting & SI

    Focus Areas

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

    Tenup Software Services is a web development company specializing in custom website development, web application development, and full-stack web development. Customer reviews highlight their strong technical capabilities and dedication, with 100% praising their ability to deliver optimal solutions and impressive project management. Minor communication issues were noted initially but were quickly resolved, underscoring their commitment to continuous improvement.

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  • Enuke Software Pvt. Ltd. Logotype

    4.8 8 reviews
    $5,000+
    < $25 / hr
    50 - 249
    Gurugram, India

    Services provided

    55% Web Development
    35% Mobile App Development
    10% Custom Software Development

    Focus Areas

    20% JavaScript
    10% AJAX
    10% C# +9
    10% Objective C
    10% PHP
    10% SQL
    5% ASP.NET
    5% Ember.js
    5% Kotlin
    5% Redux
    5% Swift
    5% Visual Basic

    Enuke Software Pvt. Ltd. is a software development company specializing in web and mobile applications, SaaS platforms, and custom software solutions. Their reviews highlight a proactive and communicative approach, with 100% of clients appreciating their responsiveness and technical expertise. Despite some suggestions for timeline improvements, Enuke Software is frequently praised for high-quality deliverables and understanding client needs, with 83% of reviewers noting their effective project management and positive client interactions.

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  • Kozak Group Logotype

    5.0 8 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249
    Kraków, Poland

    Services provided

    25% Web Development
    50% E-Commerce Development
    15% Conversion Optimization +1
    10% Mobile App Development

    Focus Areas

    35% JavaScript
    25% PHP
    25% Typescript +1
    15% Java

    Kozak Group is a web development company specializing in custom website development and full-stack web development, particularly with Magento platforms. Across their reviews, clients consistently commend their rapid integration, strong project management, and technical expertise. Approximately 90% of the feedback highlights the company's seamless communication and ability to deliver timely, high-quality results, emphasizing their value as a reliable partner.

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  • Avisoft Logotype

    4.5 2 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249
    Sahibzada Ajit Singh Nagar, India

    Services provided

    15% Web Development
    30% AI Development
    25% IT Staff Augmentation +2
    15% Custom Software Development
    15% Mobile App Development

    Focus Areas

    35% JavaScript
    30% Typescript
    15% Python +2
    10% Java
    10% SQL

    Avisoft is a technology company specializing in QA automation and data engineering services. The company is praised for its genuine resources and quick adaptability, with reviewers noting 100% satisfaction with project outcomes and timely delivery. Clients appreciate the company's value for cost and alignment with their values.

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  • Inspirovate Creatives Logotype

    Inspirovate Creatives

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

    Services provided

    40% Web Development
    25% Social Media Marketing
    20% Web Design +2
    10% Mobile App Development
    5% AI Development

    Focus Areas

    45% JavaScript
    40% Typescript
    10% SQL +1
    5% Go

    Inspirovate Creatives is a Web Development company specializing in full-cycle development, including Web Design, Front-End and Back-End Development, and Web Application Development. Reviewers consistently praise their strong project management, modern UI/UX design, and effective integration of AI-powered features, with 100% positive feedback regarding their ability to enhance user engagement and lead generation.

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  • Code&Care Logotype

    4.9 9 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249
    Kesklinna, Estonia

    Services provided

    90% Web Development
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    70% PHP
    20% Python

    Code&Care is a web development company specializing in web application development, full-stack web development, and mobile app development. Reviews reveal a high level of satisfaction, with 100% positive feedback emphasizing their expertise in Angular and React technologies, project management skills, and timely delivery. A notable 75% of clients commend their adaptability and professionalism, while some suggest minor improvements in unit testing and direct testing before releases.

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  • Commutatus Logotype

    4.8 20 reviews
    $1,000+
    $50 - $99 / hr
    10 - 49
    Bengaluru, India

    Services provided

    15% Web Development
    20% Custom Software Development
    20% UX/UI Design +4
    15% Mobile App Development
    10% IT Strategy Consulting
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    40% JavaScript
    20% Ruby
    15% SQL +3
    10% Other programming & scripting languages
    10% Redux
    5% AJAX

    Commutatus is a versatile web development company specializing in Web Application Development, Custom Website Development, and Full-Stack Web Development. The majority of reviewers (approximately 90%) praise their project management, proactivity, and communication, with some noting areas for improvement, such as frequency of updates. Clients commend their ability to integrate complex technologies and their commitment to delivering quality outcomes that align with business objectives.

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  • W&S Digitalagentur GmbH Logotype

    5.0 4 reviews
    $25,000+
    $100 - $149 / hr
    10 - 49
    Esslingen am Neckar, Germany

    Services provided

    15% Web Development
    25% E-Commerce Development
    20% UX/UI Design +3
    15% Ecommerce Marketing
    15% Pay Per Click
    10% Low/No Code Development

    Focus Areas

    40% JavaScript
    20% PHP
    10% AJAX +4
    10% SQL
    10% Swift
    5% Typescript
    5% XML

    W&S Digitalagentur GmbH is a web development company specializing in custom website development and web design. The reviews highlight their strong project management, responsiveness, and customer-focused approach, with a 100% positive feedback rate emphasizing transparency and creativity. Many reviewers appreciate their ability to deliver tailored solutions and emphasize their effective communication and adherence to timelines.

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  • Esketchers Logotype

    4.9 10 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249
    Lahore, Pakistan

    Services provided

    15% Web Development
    20% Mobile App Development
    15% Custom Software Development +5
    10% BI & Big Data Consulting & SI
    10% Cloud Consulting & SI
    10% Cybersecurity
    10% IT Managed Services
    10% IT Strategy Consulting

    Focus Areas

    40% JavaScript
    40% Python
    20% Typescript

    Esketchers is a web development company known for its full-stack web development, web design, and custom website development services. Clients consistently praise their technical expertise, communication, and project management skills, with 100% satisfaction reported in reviews. Key themes include their ability to meet deadlines and the high quality of their code, with 75% of reviewers highlighting their responsiveness and flexibility.

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  • ATTCK, LLC. Logotype

    ATTCK, LLC.

    4.6 5 reviews
    $10,000+
    $150 - $199 / hr
    2 - 9

    Services provided

    25% Web Development
    25% Web Design
    10% E-Commerce Development +7
    10% UX/UI Design
    5% Branding
    5% Custom Software Development
    5% Graphic Design
    5% Logo
    5% Mobile App Development
    5% Wearable App Development

    Focus Areas

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

    ATTCK, LLC. is a web development company specializing in custom website development, web design, and full-stack web development. Reviews highlight their commitment to quality, responsiveness, and client collaboration, with 67% of feedback citing impressive project management. However, 33% note concerns about project timelines, underscoring the importance of dedicated management. Overall, clients appreciate their innovative solutions and professional approach.

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  • Madison Technologies Logotype

    4.7 5 reviews
    $25,000+
    $50 - $99 / hr
    50 - 249
    Singapore

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Mobile App Development +4
    15% IT Staff Augmentation
    10% Cybersecurity
    10% UX/UI Design
    5% IT Managed Services

    Focus Areas

    10% JavaScript
    15% Ruby
    10% AJAX +9
    10% Kotlin
    10% PHP
    10% Redux
    10% Swift
    5% Go
    5% HTML5
    5% Objective C
    5% Python
    5% Rust

    Madison Technologies is a web development company specializing in custom website development, full-stack web development, and web application development. Reviews indicate a 100% positive feedback rate, highlighting their punctuality, strong project management, and proactive problem-solving capabilities. Clients appreciate their ability to adapt to company culture and provide cost-effective solutions without compromising quality.

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  • Hex Digital Logotype

    5.0 3 reviews
    $25,000+
    $100 - $149 / hr
    10 - 49
    London, England

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Product Design +3
    20% UX/UI Design
    10% Low/No Code Development
    10% Web Design

    Focus Areas

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

    Hex Digital is a web development company specializing in Website Development and Web Design. Reviewers consistently praised their project management and communication, with 100% highlighting their responsiveness and ability to meet deadlines. The company is noted for successfully delivering custom website solutions that meet complex requirements, earning universal commendation for their professionalism and focus on client needs.

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  • Efigence Logotype

    4.8 9 reviews
    $25,000+
    $25 - $49 / hr
    50 - 249
    Warszawa, Poland

    Services provided

    35% Web Development
    35% UX/UI Design
    20% Custom Software Development +1
    10% Mobile App Development

    Focus Areas

    30% JavaScript
    30% Java
    20% Other programming & scripting languages +1
    20% Swift

    Efigence, operating as Artegence, specializes in Web Development, offering services such as UX/UI design and Online Development. Across various projects, the company has received overwhelmingly positive feedback, with around 100% of reviewers praising their technical expertise and smooth project implementation. Clients notably appreciate their flexibility and effective communication throughout the development process.

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  • Seota Digital Marketing Logotype

    5.0 25 reviews
    $10,000+
    $100 - $149 / hr
    10 - 49
    Frisco, TX

    Services provided

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

    Focus Areas

    10% JavaScript
    40% HTML5
    20% PHP +3
    15% XML
    10% AJAX
    5% Python

    Seota Digital Marketing is a web development company specializing in custom website development and full-stack web development services. Their reviews highlight exceptional responsiveness and professionalism, with about 100% of clients praising their communication and speed. Many clients experienced successful website redesigns and improved functionality, with 90% noting positive outcomes such as enhanced user-friendliness and increased engagement.

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  • Broscorp.net Logotype

    4.8 15 reviews
    $10,000+
    $25 - $49 / hr
    10 - 49
    Dnipro, Ukraine

    Services provided

    25% Web Development
    65% Custom Software Development
    10% BI & Big Data Consulting & SI

    Focus Areas

    10% JavaScript
    60% Java
    20% Python +1
    10% SQL

    Broscorp.net is a renowned web development company specializing in custom website development, full-stack web development, and web application development. With an impressive project management approach and high technical competence, 100% of reviewers commend their attention to detail and ability to deliver projects on time and within budget. Clients consistently appreciate their responsiveness, flexibility, and innovative problem-solving skills.

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  • XCodes Logotype

    5.0 11 reviews
    $25,000+
    $50 - $99 / hr
    2 - 9
    București, Romania

    Services provided

    25% Web Development
    50% Custom Software Development
    25% Mobile App Development

    Focus Areas

    50% JavaScript
    50% PHP

    XCodes is a highly regarded web development company specializing in custom software solutions and full-stack web development. With 100% positive feedback, clients commend their proactive communication and ability to deliver projects on time using modern technology stacks. Approximately 80% of reviewers highlight their adaptability and understanding of client needs. XCodes' expertise in web application and back-end development is frequently mentioned as a strong asset.

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  • Softjourn Logotype

    4.8 6 reviews
    Undisclosed
    $50 - $99 / hr
    250 - 999
    Wrocław, Poland

    Services provided

    20% Web Development
    50% Custom Software Development
    15% Enterprise App Modernization +2
    10% Mobile App Development
    5% Blockchain

    Focus Areas

    20% JavaScript
    30% ASP.NET
    20% Java +2
    20% PHP
    10% C#

    Softjourn is a full-stack web development company that excels in back-end development and integration with third-party systems. They consistently receive positive feedback for their flexibility, competence, and commitment to delivering value, with 100% of reviews highlighting their strong client focus and quality of service. Clients appreciate their adaptability and consider them highly reliable partners in custom website development projects.

    See all 6 projects
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  • MAKSOF GLOBAL LTD Logotype

    5.0 8 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Karachi, Pakistan

    Services provided

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

    Focus Areas

    20% JavaScript
    20% Typescript
    10% AJAX +6
    10% Go
    10% PHP
    10% Python
    10% SQL
    5% Redux
    5% Swift

    MAKSOF is a web development company specializing in web application development and web programming. Reviews highlight their expertise in front-end development, adaptability to client needs, and strong project management skills, with 100% of reviewers praising their timely communication and flexibility. Clients commend their creative solutions and reliability, with no significant areas for improvement noted.

    See all 8 projects
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  • Virtue Xolutions Logotype

    4.9 8 reviews
    $5,000+
    $100 - $149 / hr
    50 - 249
    دبي, United Arab Emirates

    Services provided

    25% Web Development
    20% Mobile App Development
    20% Social Media Marketing +4
    15% Search Engine Optimization
    10% AI Development
    5% Custom Software Development
    5% Marketing Strategy

    Focus Areas

    20% JavaScript
    30% Other programming & scripting languages
    15% PHP +3
    15% SQL
    10% AJAX
    10% HTML5

    Virtue Xolutions is a web development company with a strong emphasis on Website Development, Web Design, and SEO-friendly content creation. Feedback highlights their professionalism and timely delivery, with 100% of reviewers impressed by their technical expertise and communication. Clients appreciate their holistic approach, combining design with digital marketing to effectively capture each brand's vision.

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  • Codex Software Logotype

    4.8 5 reviews
    $10,000+
    $50 - $99 / hr
    50 - 249
    Lisboa, Portugal

    Services provided

    20% Web Development
    20% Custom Software Development
    20% IT Managed Services +3
    20% IT Staff Augmentation
    10% E-Commerce Development
    10% Enterprise App Modernization

    Focus Areas

    40% JavaScript
    20% Java
    20% Python +2
    10% ASP.NET
    10% C#

    Codex Software is a versatile software development company offering services such as staff augmentation, custom software solutions, and API development. The company consistently receives positive feedback, with approximately 100% of reviewers praising their project management, commitment to deadlines, and ability to integrate seamlessly with existing teams. Clients also commend their proactive approach and problem-solving skills, highlighting the company's dedication to delivering high-quality results.

    See all 5 projects
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  • Logicwind Logotype

    4.8 3 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249
    Surat, India

    Services provided

    10% Web Development
    20% Mobile App Development
    10% AI Development +6
    10% AR/VR Development
    10% Custom Software Development
    10% Digital Strategy
    10% IT Strategy Consulting
    10% Low/No Code Development
    10% UX/UI Design

    Focus Areas

    63% JavaScript
    11% Typescript
    6% Kotlin +4
    5% PHP
    5% Redux
    5% SQL
    5% Swift

    Logicwind is a web development company specializing in backend, mobile app, and full-stack web development. The company is praised for its effective project management and timely delivery, with 100% of reviewers highlighting their proactive approach and pragmatic problem-solving. Despite initial team adjustments, Logicwind consistently met project goals and budgets.

    See all 3 projects
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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 The Software House
4 Brainhub
5 Xmartlabs
6 GeekyAnts
7 FocusReactive
8 Lizard Global
9 PopArt Studio
10 Softonix
11 INOXOFT
12 HTMLPanda
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. INOXOFT Logotype

    INOXOFT

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

    Ability to deliver

    39.4/40.0
    19.4/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  12. 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
  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. 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
  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. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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

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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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