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Top JavaScript Developers

JavaScript powers everything from interactive websites to complex enterprise applications. Partnering with an experienced JavaScript development agency ensures your product is fast, secure, and ready to scale. Clutch makes it easy to find trusted providers by publishing in-depth, verified client reviews and transparent performance data. Use our filters to sort agencies by budget, location, framework expertise, and more. Looking for regional specialists? Browse firms in the United States, United Kingdom, or Canada to compare portfolios and pricing in your market. Start exploring today and shortlist partners that align with your goals.
Ratings Updated: May 16, 2026
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15 Leaders 15 Contenders

22,049 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 89 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

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

    Focus Areas

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

    Digis, a Fiverr company (NYSE: FVRR), specializes in Web Development, providing comprehensive services such as Front-End Development, Back-End Development, and Custom Website Development. Their reviews indicate a 100% satisfaction rate, highlighting their strong project management, technical expertise, and clear communication. Approximately 70% of reviewers emphasize their seamless integration into teams and high-quality deliverables.

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  • Point Jupiter Logotype

    5.0 4 reviews
    $10,000+
    $50 - $99 / hr
    10 - 49
    Zagreb, Croatia

    Services provided

    50% Web Development
    35% UX/UI Design
    15% Mobile App Development

    Focus Areas

    80% JavaScript
    10% Go
    10% Other programming & scripting languages

    Point Jupiter is a web development company known for its expertise in custom website development and front-end development. With 100% positive feedback, clients commend their meticulous approach to web and mobile application development, ensuring timely delivery and high-quality results. Their dedication to project goals, proactive communication, and ability to align with clients' missions make them a preferred partner for complex digital projects.

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  • Loovatech Logotype

    5.0 8 reviews
    $25,000+
    $50 - $99 / hr
    10 - 49
    Tallinn, Estonia

    Services provided

    30% Web Development
    30% Custom Software Development
    20% IT Strategy Consulting +1
    20% Mobile App Development

    Focus Areas

    10% JavaScript
    20% Python
    10% Java +11
    10% SQL
    5% C
    5% C#
    5% C++
    5% Go
    5% HTML5
    5% Kotlin
    5% Objective C
    5% PHP
    5% Swift
    5% Typescript

    Loovatech is a dynamic web development company specializing in custom website and web application development. Feedback from clients is overwhelmingly positive, with 100% of reviewers praising their project management and communication skills. Clients appreciate their friendly attitude and commitment to delivering timely and effective solutions, although some suggest clearer role distribution could enhance their service.

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  • Deep Space Robots Logotype

    5.0 5 reviews
    $25,000+
    $100 - $149 / hr
    10 - 49
    Richardson, TX

    Services provided

    25% Web Development
    30% Custom Software Development
    25% Mobile App Development +2
    10% AI Consulting
    10% UX/UI Design

    Focus Areas

    30% JavaScript
    40% Typescript
    15% HTML5 +2
    10% Ruby
    5% Ember.js

    Deep Space Robots is a web development company specializing in website development and custom web application development. The company is praised for its professional communication and timely project delivery, with 100% satisfaction reported by one reviewer and a 90% client retention rate highlighted by another. Most reviewers appreciate their alignment with client values and budget.

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  • Artjoker Software Logotype

    4.9 53 reviews
    $25,000+
    $50 - $99 / hr
    50 - 249
    Kyiv, Ukraine

    Services provided

    10% Web Development
    15% Mobile App Development
    10% AI Development +7
    10% AR/VR Development
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% DevOps Managed Services
    10% Low/No Code Development
    10% UX/UI Design
    5% IT Staff Augmentation

    Focus Areas

    42% JavaScript
    11% PHP
    11% Python +7
    6% AJAX
    5% HTML5
    5% Java
    5% SQL
    5% Typescript
    5% XML
    5% jquery

    Artjoker Software is a web development company with expertise in custom website and web application development. Clients praise their ability to deliver high-quality projects on time, demonstrating strong project management and technical skills, particularly in full-stack web and mobile development. Approximately 90% of reviews highlight their responsiveness and attention to detail, while 80% mention their ability to understand and align with client needs effectively.

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  • Celerik Logotype

    4.9 20 reviews
    $50,000+
    $50 - $99 / hr
    50 - 249
    Medellín, Colombia

    Services provided

    35% Web Development
    35% Enterprise App Modernization
    20% Mobile App Development +1
    10% Generative AI

    Focus Areas

    30% JavaScript
    20% C#
    20% Redux +5
    10% SQL
    5% ASP.NET
    5% Java
    5% PHP
    5% Python

    Celerik is a web development company specializing in custom website development, web application development, and front-end development. They consistently receive positive feedback for their project management, with 100% of reviewers highlighting their responsiveness and technical expertise. Clients commend Celerik for their ability to meet deadlines and adapt to project needs, although some suggest improvements in scoping and communication skills of technical teammates.

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  • Whiz, a 10Pearls Company Logotype

    4.6 15 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249
    Santiago de Surco, Peru

    Services provided

    20% Web Development
    35% Mobile App Development
    30% IT Staff Augmentation +1
    15% Custom Software Development

    Focus Areas

    20% JavaScript
    15% PHP
    10% C# +7
    10% Go
    10% Java
    10% Python
    10% Typescript
    5% C++
    5% Kotlin
    5% Ruby

    Whiz, a 10Pearls Company is a web development firm renowned for its proficiency in Custom Website Development, Web Design, and Full-Stack Web Development. Reviewers consistently praise their responsiveness, technical expertise, and timely project delivery, with approximately 90% highlighting their commitment and alignment with client needs. While minor suggestions for increased organizational tools were noted, their adaptability and collaborative approach are highly valued.

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  • UAITLAB Logotype

    5.0 8 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Kyiv, Ukraine

    Services provided

    30% Web Development
    20% Custom Software Development
    20% UX/UI Design +3
    10% CRM Consulting and SI
    10% ECM Consulting and SI
    10% Web Design

    Focus Areas

    30% JavaScript
    70% PHP

    UAITLAB is a reputable company specializing in Web Development, offering services such as Custom Website Development, Web Design, and both Front-End and Back-End Development. Reviews consistently highlight their professionalism, adherence to deadlines, and effective communication, with 100% positive feedback emphasizing their ability to deliver high-quality, timely solutions tailored to client needs. Their commitment to client satisfaction and flexibility in project management are frequently noted.

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  • FarziEngineer Logotype

    4.8 33 reviews
    $5,000+
    < $25 / hr
    50 - 249
    Gurugram, India

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +2
    20% Enterprise App Modernization
    20% Mobile App Development

    Focus Areas

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

    FarziEngineer is a web development company specializing in custom website and mobile app development, leveraging their proprietary Farzicom platform. They consistently deliver high-quality projects with a focus on sustainability and performance, as evidenced by improved conversion rates and operational efficiency reported by clients. 93% of reviewers commend their rapid response and project management skills, while 88% highlight their ability to align with client values and provide value for cost.

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  • Walt Logotype

    Walt

    4.9 10 reviews
    $5,000+
    $50 - $99 / hr
    2 - 9

    Services provided

    30% Web Development
    15% E-Commerce Development
    10% Digital Strategy +6
    10% Pay Per Click
    10% Search Engine Optimization
    10% UX/UI Design
    5% Conversion Optimization
    5% Email Marketing
    5% Social Media Marketing

    Focus Areas

    40% JavaScript
    40% PHP
    20% SQL

    Walt is a web development company proficient in creating custom website solutions and implementing digital strategies. Their services encompass front-end and back-end development, web design, and SEO optimization. Reviews indicate a 100% satisfaction rate, highlighting their project management, tailored client solutions, and proactive approach. Approximately 85% of clients commend their understanding of needs, while 95% appreciate their timely and effective communication.

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  • Hashrocket Logotype

    5.0 10 reviews
    $25,000+
    $150 - $199 / hr
    10 - 49
    Chicago, IL

    Services provided

    55% Web Development
    35% Mobile App Development
    10% E-Commerce Development

    Focus Areas

    20% JavaScript
    60% Ruby
    10% Other programming & scripting languages +1
    10% SQL

    Hashrocket is a proficient web development company specializing in full-stack web development and custom website development. Their clients commend their expertise, with 100% of reviewers highlighting their impressive communication and project management skills. Their proactive approach and dedication to delivering quality work ensure a smooth and efficient development process.

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  • Strimkosoft Logotype

    Strimkosoft

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

    Services provided

    70% Web Development
    30% Mobile App Development

    Focus Areas

    70% JavaScript
    15% Python
    15% SQL

    Strimkosoft is a software development company specializing in SaaS platforms and industry-specific solutions. Client feedback is overwhelmingly positive, with 100% appreciation for their efficient project management, industry expertise, and customer-centric approach. Reviewers consistently praise their ability to deliver cost-effective, high-quality software tailored to client needs and their exceptional responsiveness to feedback.

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  • Zoocha Logotype

    4.9 6 reviews
    $50,000+
    $100 - $149 / hr
    50 - 249
    Hertford, England

    Services provided

    30% Web Development
    15% UX/UI Design
    10% Application Management & Support +8
    10% Digital Strategy
    5% API Development
    5% Architectural Design
    5% E-Commerce Development
    5% Microservices Architecture Services
    5% Mobile App Development
    5% Product Design
    5% Web Design

    Focus Areas

    20% JavaScript
    70% PHP
    5% HTML5 +1
    5% jquery

    Zoocha is a web development company specializing in custom website development and full-stack web development, particularly using Drupal. Feedback highlights Zoocha's strong project management, timely delivery, and effective communication, with 80% of clients praising their technical expertise. However, 20% note room for improvement in design and communication transparency. Overall, Zoocha is commendable for complex projects and fostering partnership-based client relationships.

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  • Sailing Byte Logotype

    5.0 16 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Gdynia, Poland

    Services provided

    40% Web Development
    20% E-Commerce Development
    20% Mobile App Development +2
    10% Application Management & Support
    10% Search Engine Optimization

    Focus Areas

    10% JavaScript
    40% PHP
    20% SQL +3
    10% Typescript
    10% XML
    10% jquery

    Sailing Byte is a comprehensive web development company specializing in full-stack web development, web application development, and custom website development. Reviews indicate a 100% positive feedback rate, highlighting their strong technical execution, efficient project management, and ability to meet deadlines. Clients appreciate their communication, adaptability, and innovative solutions, with 80% of reviews emphasizing their exceptional quality and partnership approach.

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  • Ivejas Logotype

    4.8 5 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49
    Vilnius, Lithuania

    Services provided

    60% Web Development
    30% Mobile App Development
    10% Custom Software Development

    Focus Areas

    60% JavaScript
    40% PHP

    Ivejas is a web development company specializing in full-stack web development and custom website development, with a strong focus on front-end expertise. Reviews highlight their exceptional communication and project management skills, with clients praising their ability to suggest improvements and deliver projects on time. Approximately 90% of reviewers commend their professionalism and proactive approach.

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  • CarbonTeq Logotype

    4.9 12 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249
    Lahore, Pakistan

    Services provided

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

    Focus Areas

    20% JavaScript
    40% Typescript
    20% Go +1
    20% Python

    CarbonTeq is a web development company specializing in custom web application development and full-stack web development. With a strong emphasis on responsiveness and high-quality deliverables, CarbonTeq has received consistent positive feedback for its agile approach, praised by 100% of reviewers for its leadership and flexibility in meeting project needs efficiently.

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  • Code & Cakes Logotype

    Code & Cakes

    4.9 11 reviews
    $5,000+
    $50 - $99 / hr
    10 - 49

    Services provided

    30% Web Development
    10% AI Development
    10% Custom Software Development +8
    10% Low/No Code Development
    10% Mobile App Development
    5% AI Consulting
    5% API Development
    5% Blockchain
    5% E-Commerce Development
    5% Generative AI
    5% IT Strategy Consulting

    Focus Areas

    25% JavaScript
    35% Typescript
    15% Redux +2
    15% SQL
    10% Go

    Code & Cakes is a highly rated company specializing in Full-Stack Web Development, offering services such as Web Application Development and Custom Website Development. Across reviews, 100% of clients praise their professionalism, timely delivery, and high-quality results. Their proactive approach and integration with client teams are consistently highlighted, with no significant areas for improvement mentioned by reviewers.

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  • Dudka Agency Logotype

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

    Services provided

    40% Web Development
    30% Web Design
    10% Low/No Code Development +3
    10% Mobile App Development
    5% E-Commerce Development
    5% Print Design

    Focus Areas

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

    Dudka Agency is a web development and SEO company renowned for its holistic approach to Website Development and Search Engine Optimization services. With 100% positive reviews, clients commend their effective project management, proactive communication, and tailored solutions, which lead to increased organic traffic, improved keyword rankings, and enhanced user engagement.

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  • VERTICAL Logotype

    4.9 8 reviews
    $10,000+
    $50 - $99 / hr
    10 - 49
    Toronto, Canada

    Services provided

    50% Web Development
    30% UX/UI Design
    10% E-Commerce Development +1
    10% Mobile App Development

    Focus Areas

    50% JavaScript
    40% PHP
    10% SQL

    VERTICAL, a web development company, specializes in custom website development, web application development, and full-stack web development. They have received predominantly positive feedback, with 85% of reviews praising their professionalism, quick problem-solving, and effective communication. Clients commend their ability to deliver intuitive designs and robust functionalities across various web platforms. A recurring theme is their open communication, highlighted by 70% of reviewers, ensuring tailored solutions and strong client satisfaction.

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  • DHNN™ Logotype

    4.7 28 reviews
    $10,000+
    $100 - $149 / hr
    50 - 249
    Buenos Aires, Argentina

    Services provided

    10% Web Development
    35% UX/UI Design
    15% Mobile App Development +4
    10% Blockchain
    10% Branding
    10% Low/No Code Development
    10% Web Design

    Focus Areas

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

    DHNN™ is a web development company offering services such as Web Design, Custom Website Development, and Front-End Development. The firm is praised for its professional project management, responsiveness, and high-quality outputs, meeting or exceeding expectations in 100% of their reviews. Clients commend DHNN™ for their proactive and collaborative approach, leading to successful project completions on time and within budget.

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  • The Lightning Group Logotype

    4.6 4 reviews
    $25,000+
    $100 - $149 / hr
    50 - 249
    London, England

    Services provided

    15% Web Development
    15% Custom Software Development
    10% AI Consulting +8
    10% AI Development
    10% Generative AI
    10% Mobile App Development
    10% UX/UI Design
    5% E-Commerce Development
    5% Enterprise App Modernization
    5% Low/No Code Development
    5% Web Design

    Focus Areas

    40% JavaScript
    30% PHP
    10% Other programming & scripting languages +2
    10% SQL
    10% Typescript

    The Lightning Group is a web development company specializing in creating MVPs, CRMs, and front-end solutions. They receive positive feedback for their startup-friendly processes and understanding, with 100% of reviewers acknowledging their effective communication. However, there is room for improvement in their contracting and billing processes.

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  • Very Good Ventures Logotype

    5.0 35 reviews
    $100,000+
    $150 - $199 / hr
    10 - 49
    New York, NY

    Services provided

    10% Web Development
    80% Mobile App Development
    10% Application Management & Support

    Focus Areas

    78% JavaScript
    10% Swift
    7% C++ +1
    5% Kotlin

    Very Good Ventures is a prominent web development company, excelling in both front-end and back-end development. Their clients commend their attention to detail, professional communication, and ability to meet deadlines, with approximately 100% of reviews highlighting these qualities. Their services, particularly in custom website and web application development, are highly praised for contributing to significant business improvements.

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  • Mifort Logotype

    5.0 22 reviews
    $5,000+
    < $25 / hr
    10 - 49
    London, England

    Services provided

    15% Web Development
    25% Blockchain
    20% Mobile App Development +3
    15% Custom Software Development
    15% IT Strategy Consulting
    10% AI Development

    Focus Areas

    45% JavaScript
    45% Java
    10% Other programming & scripting languages

    Mifort is a versatile web development company known for excelling in custom website development, web application development, and both front-end and back-end development. The reviews highlight Mifort's strong project management, with 100% of reviewers praising their communication and business understanding. Reviewers also appreciate their dedication to meeting deadlines and budget constraints, with no notable negative feedback reported.

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  • Techno Exponent Logotype

    4.8 42 reviews
    $5,000+
    < $25 / hr
    50 - 249
    Kolkata, India

    Services provided

    15% Web Development
    25% Mobile App Development
    10% AR/VR Development +9
    10% Custom Software Development
    10% Enterprise App Modernization
    5% AI Development
    5% Application Management & Support
    5% E-Commerce Development
    5% Search Engine Optimization
    5% UX/UI Design
    3% Mobile & App Marketing
    2% Pay Per Click

    Focus Areas

    11% JavaScript
    11% PHP
    11% Python +11
    11% SQL
    11% Swift
    8% Kotlin
    5% AJAX
    5% Ember.js
    5% Java
    5% Other programming & scripting languages
    5% Redux
    5% Typescript
    5% XML
    2% Objective C

    Techno Exponent is a web development company specializing in full-stack web development, custom website development, and web application development. Based on their Clutch.co reviews, Techno Exponent consistently receives positive feedback, with 100% of reviewers praising their on-time delivery, professionalism, and technical expertise. Clients commend their ability to adapt to changes and their commitment to understanding and executing complex project requirements effectively.

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  • Mobcoder Logotype

    4.9 32 reviews
    $25,000+
    $50 - $99 / hr
    50 - 249
    Seattle, WA

    Services provided

    10% Web Development
    15% AI Development
    15% IT Staff Augmentation +6
    10% BI & Big Data Consulting & SI
    10% Custom Software Development
    10% DevOps Managed Services
    10% IoT Development
    10% Mobile App Development
    10% UX/UI Design

    Focus Areas

    11% JavaScript
    22% Swift
    12% Kotlin +5
    11% ASP.NET
    11% Go
    11% Java
    11% Python
    11% Typescript

    Mobcoder is a versatile web development company known for its expertise in custom website and web application development. Their clients praise their technical know-how, flexibility, and exceptional project management skills. Approximately 80% of reviews highlight their responsiveness and ability to deliver projects on time and within budget, though some suggest improvement in design aesthetics.

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  • Agile Infoways LLC Logotype

    4.9 37 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249
    Coral Springs, FL

    Services provided

    10% Web Development
    14% Generative AI
    14% Low/No Code Development +6
    12% IT Staff Augmentation
    10% BI & Big Data Consulting & SI
    10% Custom Software Development
    10% IT Strategy Consulting
    10% Mobile App Development
    10% Search Engine Optimization

    Focus Areas

    10% JavaScript
    20% Kotlin
    20% Swift +9
    10% Java
    5% ASP.NET
    5% Objective C
    5% Other programming & scripting languages
    5% PHP
    5% Python
    5% Redux
    5% SQL
    5% Typescript

    Agile Infoways LLC is a versatile web development company offering services such as web application development, custom website development, and front-end and back-end development. Reviews indicate a strong emphasis on project management, timely delivery, and client satisfaction. Approximately 90% of reviewers highlight their impressive communication, transparency, and dedication to client needs, while no significant areas for improvement are noted across the feedback.

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  • KeyUA Logotype

    KeyUA

    4.9 7 reviews
    $5,000+
    $25 - $49 / hr
    50 - 249

    Services provided

    80% Web Development
    10% Back Office Outsourcing
    10% IT Managed Services

    Focus Areas

    25% JavaScript
    65% Python
    10% PHP

    KeyUA is a web development company specializing in custom website and web application development with a strong focus on Python and full-stack capabilities. Clients frequently commend their professional approach, timely delivery, and quality of work, with a notable 100% of reviewers appreciating their dedication. While feedback is overwhelmingly positive, with no significant complaints, one client suggested improvements in development speed.

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  • Tilde Loop Logotype

    5.0 2 reviews
    Undisclosed
    Undisclosed
    10 - 49
    London, England

    Services provided

    33% Web Development
    34% Custom Software Development
    33% Other Application Development

    Focus Areas

    50% JavaScript
    50% Typescript

    Tilde Loop is a full-stack web development company that specializes in custom website development and web design. They have consistently received positive feedback, with 100% of reviewers praising their responsiveness and ability to meet tight deadlines without compromising quality. Additionally, their proactive approach and flexibility in budget management are highlighted as key strengths.

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  • GNC Web Logotype

    5.0 9 reviews
    $1,000+
    $50 - $99 / hr
    2 - 9
    Athina, Greece

    Services provided

    25% Web Development
    45% E-Commerce Development
    30% Digital Strategy

    Focus Areas

    50% JavaScript
    50% PHP

    GNC Web is a web development company specializing in custom website development, web design, and web application development. The reviews consistently highlight their creativity, professionalism, and responsiveness, with 100% of feedback being positive and emphasizing timely delivery and a modern design approach tailored to client needs. Clients appreciate their attention to detail, clear communication, and the personal involvement of their leadership in projects.

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  • Sweetcode Lab Inc. Logotype

    5.0 7 reviews
    $1,000+
    $50 - $99 / hr
    10 - 49
    Lincoln, CA

    Services provided

    20% Web Development
    25% UX/UI Design
    20% Custom Software Development +2
    20% Mobile App Development
    15% Branding

    Focus Areas

    40% JavaScript
    20% Java
    20% PHP +1
    20% Swift

    Sweetcode Lab Inc. is a web development company specializing in custom website development and web design. They have been praised for their creativity, flexibility, and effective communication, with 100% of reviewers highlighting positive experiences and successful project outcomes. One client noted their project resulted in a significantly improved website appearance and usability.

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  • Grio Logotype

    4.8 9 reviews
    $25,000+
    $150 - $199 / hr
    50 - 249
    San Francisco, CA

    Services provided

    20% Web Development
    25% Custom Software Development
    20% Mobile App Development +3
    15% UX/UI Design
    10% Application Management & Support
    10% IT Strategy Consulting

    Focus Areas

    25% JavaScript
    25% Ruby
    20% Other programming & scripting languages +3
    10% Java
    10% Objective C
    10% Swift

    Grio is a web development company specializing in custom website development, web application development, and full-stack web development solutions. Reviewers consistently praise Grio for their adaptability, attention to detail, and exceptional responsiveness. Over 90% of feedback highlights their strong project management skills and effective communication, fostering trust and continued collaboration with clients across various industries.

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  • Uplab Software Logotype

    5.0 11 reviews
    $25,000+
    $25 - $49 / hr
    10 - 49
    Ternopil, Ukraine

    Services provided

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

    Focus Areas

    50% JavaScript
    50% Typescript

    Uplab Software is a web development company specializing in full-stack web development, web application development, and custom website development. Across the reviews, 100% of clients praised their technical expertise, timely delivery, and proactive problem-solving abilities. Clients noted their impressive entrepreneurial mindset and efficient, collaborative project management, enhancing user experiences and meeting complex business needs.

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  • GoGroovy App Solutions Logotype

    4.9 4 reviews
    $5,000+
    < $25 / hr
    50 - 249
    Nadiad, India

    Services provided

    25% Web Development
    30% Custom Software Development
    15% Mobile App Development +3
    10% AI Development
    10% IT Staff Augmentation
    10% Web Design

    Focus Areas

    50% JavaScript
    50% PHP

    GoGroovy App Solutions is a web development company specializing in custom solutions, including Chrome Extensions and backend systems, with expertise in technologies such as Node JS and React JS. Reviews highlight their exceptional development skills, timely delivery, and effective communication, with 100% of reviewers praising their technical proficiency and project management.

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  • Hit Ocean Logotype

    4.9 7 reviews
    $10,000+
    $50 - $99 / hr
    10 - 49
    Buenos Aires, Argentina

    Services provided

    25% Web Development
    30% Mobile App Development
    20% IT Staff Augmentation +2
    15% Custom Software Development
    10% UX/UI Design

    Focus Areas

    100% JavaScript

    Hit Ocean is a web development company specializing in custom website development and application design, with a strong focus on web and app development services. Reviews indicate a consistent track record of timely delivery, strong communication, and effective project management, with 100% of reviews praising their responsiveness and cultural fit. Notably, 75% of reviewers highlighted their alignment with company values and adaptability.

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  • PrintXpand Logotype

    4.7 17 reviews
    $5,000+
    < $25 / hr
    250 - 999
    Ahmedabad, India

    Services provided

    20% Web Development
    50% E-Commerce Development
    10% Mobile App Development +2
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    40% PHP
    30% Typescript +1
    10% AJAX

    PrintXpand, a company specializing in web development and custom website solutions, has consistently positive feedback from clients, with 100% expressing satisfaction. Reviewers frequently highlight their impressive problem-solving abilities, timely project completion, and effective communication. Their commitment to client needs and efficient workflows are notable themes, with 67% of reviews praising their responsiveness and project updates.

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  • Etheric Logotype

    4.9 20 reviews
    $10,000+
    $50 - $99 / hr
    10 - 49
    Prague, Czech Republic

    Services provided

    20% Web Development
    50% UX/UI Design
    10% Blockchain +2
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    50% JavaScript
    25% Python
    25% Typescript

    Etheric is a web development company specializing in Web Development, Web Design, and Custom Website Development services. The company is consistently praised for its professional project management, quality work, and responsive communication, with 100% positive feedback across reviews. Notably, Etheric's adept team efficiently meets deadlines while ensuring client satisfaction and producing impressive conversion rates for web projects.

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  • Scaleteam Technologies Pvt Ltd Logotype

    5.0 4 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Surat, India

    Services provided

    20% Web Development
    20% Mobile App Development
    15% Other Application Development +6
    10% Custom Software Development
    10% E-Commerce Development
    10% Product Design
    5% Business Consulting
    5% UX/UI Design
    5% Web Design

    Focus Areas

    70% JavaScript
    10% PHP
    10% Redux +1
    10% SQL

    Scaleteam Technologies Pvt Ltd is a custom software development company specializing in B2C SaaS platforms and full-stack applications. Reviews indicate high satisfaction, with 100% of clients praising their project management, technical expertise, and timely delivery. Clients highlight the company's exceptional problem-solving skills and ability to exceed expectations, with no significant areas for improvement noted.

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  • EVDEV Logotype

    5.0 7 reviews
    $1,000+
    $50 - $99 / hr
    10 - 49
    Waterloo, Canada

    Services provided

    40% Web Development
    35% E-Commerce Development
    25% UX/UI Design

    Focus Areas

    35% JavaScript
    35% Python
    10% HTML5 +4
    5% Redux
    5% SQL
    5% Typescript
    5% jquery

    EVDEV is a proficient web development company specializing in creating user-friendly, responsive websites and digital solutions. Their services include Web Development, Web Design, and Custom Website Development. Across their reviews, EVDEV consistently receives praise for their effective project management, meeting deadlines, and exceptional client communication, with over 90% of feedback being positive. Clients also highlight their commitment to delivering tailored solutions and maintaining strong partnerships.

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  • WebPlanex InfoTech Logotype

    4.7 20 reviews
    $5,000+
    $25 - $49 / hr
    50 - 249
    Addison, TX

    Services provided

    30% Web Development
    40% E-Commerce Development
    20% Mobile App Development +1
    10% UX/UI Design

    Focus Areas

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

    WebPlanex InfoTech is a web development company proficient in custom website development, full-stack web development, and web design. Client feedback is generally positive, with a notable 83% of reviews highlighting their strong communication and commitment to project deadlines. However, there is some criticism, with 17% of reviews expressing dissatisfaction regarding project management and transparency.

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  • Perfect Afternoon Logotype

    5.0 20 reviews
    $5,000+
    $150 - $199 / hr
    10 - 49
    Pleasant Ridge, MI

    Services provided

    20% Web Development
    20% E-Commerce Development
    15% Search Engine Optimization +4
    15% Web Design
    10% CRM Consulting and SI
    10% Content Marketing
    10% Pay Per Click

    Focus Areas

    20% JavaScript
    20% PHP
    10% AJAX +5
    10% HTML5
    10% Python
    10% SQL
    10% Typescript
    10% jquery

    Perfect Afternoon is a proficient web development company specializing in Website Development and Custom Website Development, offering comprehensive services including SEO, HubSpot setup, and Web Design. Feedback indicates high client satisfaction with 100% positive praise for their punctuality, creativity, and effective project management. Notably, 75% of reviews commend their commitment to understanding client needs and industry trends, ensuring tailored solutions for improved online presence and functionality.

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  • Coders.Dev Logotype

    5.0 11 reviews
    $5,000+
    < $25 / hr
    250 - 999
    London, England

    Services provided

    10% Web Development
    10% AI Development
    10% BI & Big Data Consulting & SI +7
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% IT Strategy Consulting
    10% Low/No Code Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Web Design

    Focus Areas

    10% JavaScript
    20% Swift
    10% ASP.NET +6
    10% Java
    10% Kotlin
    10% PHP
    10% Python
    10% Redux
    10% Ruby

    Coders.Dev specializes in Website Development and Web Design, offering tailored development and digital marketing services. Clients consistently praise the company's responsiveness, professionalism, and the high quality of their deliverables, noting significant improvements in both user experience and business outcomes. Coders.Dev is highlighted for its effective project management and timely delivery.

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  • PixelMusica Logotype

    5.0 7 reviews
    $10,000+
    $300+ / hr
    10 - 49
    Singapore, Singapore

    Services provided

    15% Web Development
    20% Branding
    20% Video Production +4
    15% Corporate Photography
    15% Web Design
    10% Advertising
    5% UX/UI Design

    Focus Areas

    40% JavaScript
    40% PHP
    20% HTML5

    PixelMusica is a web development company specializing in Website Development and Custom Website Development, complemented by corporate and event photography services. With 100% positive feedback, clients commend their high-quality, timely deliveries and responsiveness, noting their exceptional support and valuable recommendations. Their alignment with company values and good culture fit are particularly highlighted by reviewers.

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  • BrightDock Logotype

    5.0 26 reviews
    $10,000+
    $100 - $149 / hr
    10 - 49
    Rijeka, Croatia

    Services provided

    20% Web Development
    30% Web Design
    15% Generative AI +3
    15% UX/UI Design
    10% AI Development
    10% Branding

    Focus Areas

    40% JavaScript
    50% PHP
    10% Python

    BrightDock is a comprehensive web development company specializing in Website Development, Web Design, and Full-Stack Web Development for various industries. Across multiple reviews, 100% of clients praise their collaborative approach, responsiveness, and innovative solutions. Approximately 90% of reviewers highlight their ability to understand project needs and deliver high-quality outcomes, while minor bugs were swiftly resolved. BrightDock has consistently exceeded expectations, earning commendations for their excellent project management and communication skills.

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  • MusicTech Lab Logotype

    4.9 33 reviews
    $5,000+
    $50 - $99 / hr
    10 - 49
    Kraków, Poland

    Services provided

    40% Web Development
    25% API Development
    25% Mobile App Development +1
    10% Low/No Code Development

    Focus Areas

    25% JavaScript
    50% Python
    25% Typescript

    MusicTech Lab is a web development company specializing in full-stack web development and web application development. Overall, the company receives overwhelmingly positive feedback, with approximately 100% of reviewers praising their strong development skills, efficient communication, and proactive approach. Clients consistently commend MusicTech Lab for their ability to deliver high-quality code and effective project management.

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  • Wondertabs Logotype

    Wondertabs

    5.0 36 reviews
    $10,000+
    Undisclosed
    10 - 49

    Services provided

    30% Web Development
    50% Web Design
    20% Branding

    Focus Areas

    10% JavaScript
    20% Other programming & scripting languages
    10% AJAX +6
    10% ASP.NET
    10% HTML5
    10% PHP
    10% SQL
    10% Swift
    10% jquery

    Wondertabs is a web development company specializing in Website Development, Web Design, and Custom Website Development. With 100% positive feedback from reviewers, they are praised for their creativity, technical skills, and responsiveness. Clients commend their ability to deliver projects on time, with 80% highlighting their effective communication and 70% appreciating their commitment to client needs.

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  • Manifest Infotech Logotype

    Manifest Infotech

    5.0 7 reviews
    $1,000+
    < $25 / hr
    50 - 249

    Services provided

    50% Web Development
    10% AR/VR Development
    10% Low/No Code Development +3
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    16% JavaScript
    26% PHP
    8% Kotlin +10
    5% AJAX
    5% ASP.NET
    5% HTML5
    5% Java
    5% Python
    5% Redux
    5% SQL
    5% Scala
    5% Swift
    5% Typescript

    Manifest Infotech is a versatile web development company specializing in Website Development, Back-End Development, and Custom Website Development. The company has received predominantly positive feedback, with 100% of reviewers commending their expertise, timely project completion, and effective communication. Multiple clients highlighted their ability to work with minimal supervision and adapt to various domains.

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  • Monarq Logotype

    4.8 3 reviews
    $25,000+
    $50 - $99 / hr
    2 - 9
    Montréal, Canada

    Services provided

    50% Web Development
    20% UX/UI Design
    20% Web Design +1
    10% E-Commerce Development

    Focus Areas

    50% JavaScript
    50% PHP

    Monarq is a web development company specializing in custom website development and Drupal solutions. It consistently receives positive reviews for its on-time delivery and high-quality solutions, with 100% of reviewers praising their communication, reliability, and expertise. Clients commend Monarq's ability to efficiently manage complex projects and provide excellent value within budgetary constraints.

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  • Frenchy Digital LLC Logotype

    4.8 19 reviews
    $25,000+
    $50 - $99 / hr
    10 - 49
    Los Angeles, CA

    Services provided

    30% Web Development
    40% Mobile App Development
    30% AI Development

    Focus Areas

    20% JavaScript
    30% PHP
    30% Swift +1
    20% Java

    Frenchy Digital LLC is a comprehensive web development company offering services in Website Development, Web Design, and Online Development. The company receives highly positive feedback, with over 95% of reviews praising their responsiveness, project management, and tailored solutions. They excel in creating user-friendly, intuitive platforms that enhance customer interaction and conversion rates. Clients appreciate their ability to deliver complex projects on time and within budget, consistently highlighting their effective communication and flexibility.

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  • INTEGRITY RESOURCE SOLUTION LLC Logotype

    4.9 8 reviews
    $5,000+
    $100 - $149 / hr
    10 - 49
    Acworth, GA

    Services provided

    35% Web Development
    20% E-Commerce Development
    15% Search Engine Optimization +3
    10% Graphic Design
    10% Mobile App Development
    10% Social Media Marketing

    Focus Areas

    30% JavaScript
    40% Python
    15% PHP +2
    10% SQL
    5% XML

    INTEGRITY RESOURCE SOLUTION LLC is a versatile web development company that excels in web design, custom website development, and SEO. Approximately 90% of reviewers highlight their impressive communication, timely delivery, and quality output. Clients consistently commend the team's professionalism and ability to align with project goals, making them a valuable partner in online development.

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  • Multi-Programming Solutions Logotype

    5.0 11 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Kharkiv, Ukraine

    Services provided

    30% Web Development
    50% E-Commerce Development
    20% Custom Software Development

    Focus Areas

    40% JavaScript
    60% PHP

    Multi-Programming Solutions is a versatile web development company specializing in custom website development, web programming, and web application development. They have consistently received positive feedback, with around 95% of clients praising their creativity, communication, and ability to meet deadlines. Clients commend their full-stack web development capabilities and flexibility in executing projects tailored to specific needs.

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  • Seasoned Logotype

    5.0 4 reviews
    $5,000+
    $100 - $149 / hr
    2 - 9
    Porto Alegre, Brazil

    Services provided

    80% Web Development
    20% Custom Software Development

    Focus Areas

    25% JavaScript
    75% Typescript

    Seasoned is a web development company specializing in software design and development, offering services such as custom website and full-stack web development. Overall feedback is overwhelmingly positive, emphasizing their excellent project management and commitment to client needs, with 100% of reviewers highlighting their continuous improvement and fair, honest approach.

    See all 4 projects
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We evaluate service providers using a structured methodology that combines:

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Ability to deliver
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Clutch Leaders Matrix

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

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

List of the Top 15 JavaScript Development Companies

  1. ImageX Logotype

    ImageX

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

    Ability to deliver

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

    Service focus

    90% Web Development
    50% JavaScript
    10% Other
    View Profile Visit Website
  2. xfive Logotype

    xfive

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

    Ability to deliver

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

    Service focus

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

    Brainhub

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

    Ability to deliver

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

    Service focus

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

    The Software House

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

    Ability to deliver

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

    Service focus

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

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    Airdev

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

    Ability to deliver

    38.5/40.0
    19.2/20 Reviews
    9.6/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

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

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

    65% Web Development
    20% JavaScript
    35% Other
    View Profile Visit Website
  8. Lizard Global Logotype

    Lizard Global

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

    Ability to deliver

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

    Service focus

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

    PopArt Studio

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

    Ability to deliver

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

    Service focus

    35% Web Development
    40% JavaScript
    65% Other
    View Profile Visit Website
  10. Softonix Logotype

    Softonix

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

    Ability to deliver

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

    Service focus

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

    Scopic

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

    Ability to deliver

    39.5/40.0
    19.8/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    25% Web Development
    25% JavaScript
    75% Other
    View Profile Visit Website
  12. GeekyAnts Logotype

    GeekyAnts

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

    Ability to deliver

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

    Service focus

    15% Web Development
    40% JavaScript
    85% Other
    View Profile Visit Website
  13. INOXOFT Logotype

    INOXOFT

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

    Ability to deliver

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

    Service focus

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

    SpdLoad

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

    Ability to deliver

    36.6/40.0
    16.8/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    45% Web Development
    50% JavaScript
    55% Other
    View Profile Visit Website
  15. HTMLPanda Logotype

    HTMLPanda

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

    Ability to deliver

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

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  17. Techuz InfoWeb Pvt. Ltd. Logotype

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

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

    PowerGate Software

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

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

    Toptal

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

    Ability to deliver

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

    Service focus

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

    Arcanys

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

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

    Blazity

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

    Ability to deliver

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

    Service focus

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

    Experion Technologies

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

    Ability to deliver

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

    Service focus

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

    Human Made

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

    Ability to deliver

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

    Service focus

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

    Vincit

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

    Ability to deliver

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

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

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

    Flowout

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

    Ability to deliver

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

    Service focus

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

    Sigma Software Group

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

    Ability to deliver

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

    Service focus

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

    Merixstudio

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

    Ability to deliver

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

    Service focus

    50% Web Development
    10% JavaScript
    50% Other
    View Profile Visit Website

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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