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Home Web Developers JavaScript

Top JavaScript Developers

JavaScript powers everything from interactive websites to complex enterprise applications. Partnering with an experienced JavaScript development agency ensures your product is fast, secure, and ready to scale. Clutch makes it easy to find trusted providers by publishing in-depth, verified client reviews and transparent performance data. Use our filters to sort agencies by budget, location, framework expertise, and more. Looking for regional specialists? Browse firms in the United States, United Kingdom, or Canada to compare portfolios and pricing in your market. Start exploring today and shortlist partners that align with your goals.
Ratings Updated: July 11, 2026
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22,257 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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  • cmsMinds Logotype

    4.9 16 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Raleigh, NC

    Services provided

    15% Web Development
    15% E-Commerce Development
    15% Mobile App Development +5
    15% Web Design
    10% Content Marketing
    10% Custom Software Development
    10% Graphic Design
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    60% PHP
    30% SQL

    cmsMinds is a web development company offering services such as Custom Website Development, Front-End Development, and Back-End Development. With over 95% positive reviews, clients frequently highlight their responsiveness, efficiency, and adherence to deadlines. Their expertise in Web Programming and Website Development is consistently praised, making them a reliable choice for web projects.

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  • Avya Technology Pvt. Ltd. Logotype

    4.5 2 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Noida, India

    Services provided

    30% Web Development
    20% Custom Software Development
    20% E-Commerce Development +2
    20% Mobile App Development
    10% Search Engine Optimization

    Focus Areas

    10% JavaScript
    30% PHP
    10% AJAX +5
    10% Kotlin
    10% Objective C
    10% Redux
    10% SQL
    10% Swift

    Avya Technology Pvt. Ltd. provides comprehensive website development, web design, and online development services, including Google analytics and security maintenance. Their reviews highlight effective project management, quick turnaround times, and robust execution, though some clients suggest enhancing cost-effectiveness for startups. Overall, the company is praised for creating dynamic and interactive websites.

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  • SCIMUS Logotype

    5.0 6 reviews
    $50,000+
    $50 - $99 / hr
    50 - 249
    L'viv, Ukraine

    Services provided

    40% Web Development
    25% Application Testing
    20% BI & Big Data Consulting & SI +1
    15% Mobile App Development

    Focus Areas

    20% JavaScript
    30% Python
    20% C++ +2
    20% PHP
    10% Go

    SCIMUS is a full-stack web development company known for its professionalism and customer-centric approach. They excel in custom website development, web application development, and backend solutions. With overwhelmingly positive feedback, 100% of reviews highlight SCIMUS's effective project management and problem-solving capabilities, and 75% commend their ability to enhance performance and maintain a robust online presence.

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  • DevelopmentNow Logotype

    DevelopmentNow

    4.8 9 reviews
    $25,000+
    $100 - $149 / hr
    10 - 49

    Services provided

    10% Web Development
    30% IoT Development
    30% Mobile App Development +3
    20% AR/VR Development
    5% UX/UI Design
    5% Wearable App Development

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% ColdFusion +8
    10% Java
    10% Kotlin
    10% PHP
    10% Redux
    10% Ruby
    10% Swift
    5% Other programming & scripting languages
    5% Typescript

    DevelopmentNow is a distinguished web development company renowned for its full-stack web development and custom website development services. With a focus on collaboration and efficient project management, they are commended for their communication and innovative problem-solving skills. Nearly 100% of reviews highlight their ability to work as an extension of the client's team, delivering projects swiftly and under budget.

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  • DigitSense Logotype

    DigitSense

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

    Services provided

    10% Web Development
    20% Digital Strategy
    10% Custom Software Development +9
    10% E-Commerce Development
    10% Mobile & App Marketing
    10% Search Engine Optimization
    5% AR/VR Development
    5% Content Marketing
    5% Email Marketing
    5% Mobile App Development
    5% Pay Per Click
    5% Social Media Marketing

    Focus Areas

    40% JavaScript
    20% AJAX
    20% Python +2
    10% C#
    10% Other programming & scripting languages

    DigitSense is a digital marketing company specializing in brand positioning and online development. Reviews indicate a strong emphasis on effective project management and successful deliverables, with 100% positive feedback regarding their attention to detail and support. They are noted for providing good value for cost, aligning with client values, and meeting project objectives efficiently.

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  • Team Harbour Logotype

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

    Services provided

    10% Web Development
    50% Blockchain
    30% Custom Software Development +1
    10% IT Staff Augmentation

    Focus Areas

    10% JavaScript
    20% Python
    10% C# +6
    10% C++
    10% Go
    10% Java
    10% Objective C
    10% PHP
    10% SQL

    Team Harbour is a software development company offering services including backend and frontend development, architecture, and QA efforts. Based on their reviews, 100% of clients praised their communication skills and technical expertise. Clients consistently highlight their prompt communication and adherence to deadlines, with 80% indicating complete satisfaction with their deliverables. Overall, Team Harbour is recognized for its high-quality work and competitive pricing.

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  • SyberGrupe Logotype

    5.0 5 reviews
    $1,000+
    $25 - $49 / hr
    2 - 9
    Randburg, South Africa

    Services provided

    10% Web Development
    10% E-Commerce Development
    10% Pay Per Click +17
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design
    5% Graphic Design
    5% Mobile App Development
    2% Branding
    2% Content Marketing
    2% Corporate Photography
    2% Digital Strategy
    2% Direct Marketing
    2% Email Marketing
    2% Logo
    2% Marketing Strategy
    2% Print Design
    1% Custom Software Development
    1% Video Production

    Focus Areas

    10% JavaScript
    70% PHP
    20% SQL

    SyberGrupe is a web development company specializing in custom website development and web application development. The company is praised for its excellent communication, proactive approach, and attention to detail, with 100% positive feedback from reviewers. Clients highlight their effective project management and the impressive involvement of the CEO in delivering top-notch services.

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  • Design Monks LLC Logotype

    4.8 6 reviews
    $5,000+
    $50 - $99 / hr
    50 - 249
    Dhaka, Bangladesh

    Services provided

    10% Web Development
    30% UX/UI Design
    20% AI Development +3
    20% Branding
    10% Mobile App Development
    10% Web Design

    Focus Areas

    15% JavaScript
    20% SQL
    15% Python +5
    10% HTML5
    10% Kotlin
    10% Other programming & scripting languages
    10% Swift
    10% Typescript

    Design Monks LLC is a UI/UX design agency known for their meticulous research and user-focused design processes, making them an ideal choice for software projects needing innovative and impactful design solutions. Across various reviews, clients consistently highlight their dedication, effective communication, and strong cultural alignment, resulting in positive feedback in approximately 100% of the reviews provided.

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  • CobbleWeb Logotype

    4.9 5 reviews
    $25,000+
    Undisclosed
    10 - 49
    London, England

    Services provided

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

    Focus Areas

    20% JavaScript
    20% PHP
    10% AJAX +5
    10% Java
    10% Other programming & scripting languages
    10% Python
    10% Ruby
    10% SQL

    CobbleWeb is a full-stack web development company specializing in custom website development, app creation, and backend services. Across their reviews, 100% of clients commend their swift project delivery and transparency, with 50% highlighting their C-level leadership's valuable advice. While one customer noted invoicing as an area for improvement, overall satisfaction remains high.

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  • QServices IT Solutions Inc. Logotype

    5.0 3 reviews
    $1,000+
    < $25 / hr
    50 - 249
    Sahibzada Ajit Singh Nagar, India

    Services provided

    10% Web Development
    20% API Development
    20% Mobile App Development +4
    15% CRM Consulting and SI
    15% Custom Software Development
    10% AI Development
    10% Low/No Code Development

    Focus Areas

    20% JavaScript
    25% ASP.NET
    20% SQL +3
    15% C#
    10% AJAX
    10% PHP

    QServices IT Solutions Inc. is a .NET software development company known for their expertise and innovative solutions that enhance client competitiveness, as demonstrated by a 35% increase in online sales for one client. With 95% positive feedback, clients praise their project management, responsiveness, and technical proficiency, though some suggest improvements in documentation and post-launch support.

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  • Mobitplus Technologies Logotype

    4.8 3 reviews
    $1,000+
    < $25 / hr
    10 - 49
    Indore, India

    Services provided

    30% Web Development
    30% Custom Software Development
    10% Blockchain +3
    10% E-Commerce Development
    10% Mobile App Development
    10% UX/UI Design

    Focus Areas

    50% JavaScript
    20% PHP
    10% AJAX +2
    10% Redux
    10% SQL

    Mobitplus Technologies is a software development company specializing in IT infrastructure and software solutions, particularly using Node.js and Angular. The company has received positive feedback for its well-planned project management and timely delivery, with 100% of reviewers highlighting their effective communication and comprehensive team structure. Clients appreciate their cost-effectiveness and technical expertise, with no significant areas for improvement noted.

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  • Tempo by Clockwork Logotype

    5.0 4 reviews
    $10,000+
    $200 - $300 / hr
    2 - 9
    Minneapolis, MN

    Services provided

    35% Web Development
    30% Web Design
    20% UX/UI Design +2
    10% Mobile App Development
    5% Logo

    Focus Areas

    35% JavaScript
    25% jquery
    15% XML +3
    10% PHP
    10% Typescript
    5% HTML5

    Tempo by Clockwork is a web development company specializing in Website Development, Custom Website Development, and Web Application Development. Reviews indicate a 100% satisfaction rate, with clients praising their responsiveness, efficient project management, and ability to meet deadlines. Approximately 75% of reviewers highlighted their ability to tailor solutions to specific client needs, ensuring functional and aesthetically pleasing websites.

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  • Great Innovus Solutions Private Limited Logotype

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

    Services provided

    25% Web Development
    60% Custom Software Development
    10% Mobile App Development +1
    5% Web Design

    Focus Areas

    10% JavaScript
    30% Kotlin
    30% Swift +3
    15% Objective C
    10% SQL
    5% PHP

    Great Innovus Solutions Private Limited is a versatile technology firm specializing in app and web development. They are praised for their development speed, quality, and competitive pricing, with 100% of reviewers noting impressive results across various projects. While communication is generally effective, there are occasional challenges with meeting deadlines and language barriers.

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  • Exquisite Software Logotype

    4.5 10 reviews
    $5,000+
    $100 - $149 / hr
    50 - 249
    Scottsdale, AZ

    Services provided

    25% Web Development
    40% Mobile App Development
    15% Low/No Code Development +3
    10% Custom Software Development
    5% Blockchain
    5% UX/UI Design

    Focus Areas

    15% JavaScript
    20% ASP.NET
    20% C# +6
    10% Kotlin
    10% PHP
    10% SQL
    5% Ember.js
    5% Python
    5% Redux

    Exquisite Software is a specialized Web Development company known for its expertise in custom software and web application development. The company receives overwhelmingly positive feedback, with 100% of reviewers highlighting their ability to deliver projects on time and exceed expectations. Their impressive project management skills and adaptive approach are frequently praised by clients.

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  • Techhive Technologies Logotype

    5.0 4 reviews
    $1,000+
    < $25 / hr
    10 - 49
    Lagos, Nigeria

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Mobile App Development +2
    20% Search Engine Optimization
    20% Social Media Marketing

    Focus Areas

    20% JavaScript
    80% Rust

    Techhive Technologies is a web development company specializing in custom website development and online development services. Clients report a 40% increase in student inquiries and a 30% uptick in organic traffic post-launch. With a focus on clear communication and tailored solutions, 100% of feedback highlights their impressive technical translation and partnership approach.

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  • Bipixels Logotype

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

    Services provided

    50% Web Development
    20% E-Commerce Development
    20% Web Design +2
    5% Graphic Design
    5% UX/UI Design

    Focus Areas

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

    Bipixels is a web development company highly regarded for its expertise in website development and site speed optimization. The company receives consistently positive feedback, with 100% of reviewers praising their responsiveness, timely delivery, and quality of work. Clients appreciate their exceptional communication and ability to enhance e-commerce conversion rates through improved site speed metrics.

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  • Asper.pro Logotype

    4.9 8 reviews
    $1,000+
    < $25 / hr
    10 - 49
    Kharkiv, Ukraine

    Services provided

    75% Web Development
    25% Search Engine Optimization

    Focus Areas

    10% JavaScript
    40% PHP
    20% SQL +3
    10% AJAX
    10% Redux
    10% XML

    Asper.pro is a web development company offering services such as custom website development and full-stack web development, primarily using technologies like WordPress and Laravel. Across their reviews, 100% of clients praised their project management, timely delivery, and focus on achieving excellent results, with 50% highlighting their impressive communication and problem-solving skills.

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  • Webspace Solutions Logotype

    5.0 7 reviews
    $1,000+
    < $25 / hr
    10 - 49
    Sahibzada Ajit Singh Nagar, India

    Services provided

    50% Web Development
    50% Web Design

    Focus Areas

    20% JavaScript
    50% PHP
    20% SQL +1
    10% Other programming & scripting languages

    Webspace Solutions is a web development company specializing in custom website development and web design. Reviewers consistently praise their efficient communication and timely project delivery, with 100% positive feedback highlighting their ability to complete tasks successfully and maintain excellent client interactions. The company is noted for its proactive approach and expertise, particularly in website content management and development.

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  • Ventuso LLC Logotype

    4.8 6 reviews
    $25,000+
    < $25 / hr
    10 - 49
    Ho Chi Minh City , Vietnam

    Services provided

    10% Web Development
    60% Mobile App Development
    20% Custom Software Development +1
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    30% SQL
    20% Java +2
    20% Other programming & scripting languages
    20% Swift

    Ventuso LLC is a web development company specializing in custom website development and web application development. Clients praise their proactive approach, with 100% of reviewers noting Ventuso's dedication to identifying potential issues early and their commitment to delivering additional features without extra charges. While their quality and dedication are consistently highlighted, some clients noted occasional delays and communication challenges due to language barriers.

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  • Blackcurrant Labs Pvt. Ltd. Logotype

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

    Services provided

    20% Web Development
    20% AI Development
    20% Blockchain +2
    20% Custom Software Development
    20% Mobile App Development

    Focus Areas

    40% JavaScript
    40% Typescript
    10% C# +1
    10% PHP

    Blackcurrant Labs Pvt. Ltd. is a web development company specializing in full-stack web development and web application development. They have received highly positive feedback, with 100% of reviewers praising their business-oriented approach and timely delivery of projects. Clients appreciate their proactive ideas, structured development process, and ability to meet business requirements effectively.

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  • Ginkgo Ukraine Logotype

    5.0 6 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49
    Cherkasy, Ukraine

    Services provided

    25% Web Development
    25% Custom Software Development
    25% E-Commerce Development +2
    15% Business Consulting
    10% IT Staff Augmentation

    Focus Areas

    20% JavaScript
    70% Python
    10% Typescript

    Ginkgo Ukraine is a web development company renowned for its professional and friendly service, specializing in custom website development and web application development. Their reviews highlight a 100% satisfaction rate with their ability to deliver high-quality projects on time, demonstrating strong communication skills and cultural compatibility.

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  • Amplifi Labs Logotype

    5.0 2 reviews
    $75,000+
    Undisclosed
    10 - 49
    Raleigh, NC

    Services provided

    25% Web Development
    25% Mobile App Development
    20% Custom Software Development +4
    10% AI Development
    10% Cloud Consulting & SI
    5% Enterprise App Modernization
    5% Other Application Development

    Focus Areas

    25% JavaScript
    30% Typescript
    25% Python +4
    5% C#
    5% PHP
    5% Redux
    5% Ruby

    Amplifi Labs is a web development company that specializes in full-stack web development and custom website development. They received 100% positive feedback, with clients praising their expertise in technology and excellent communication skills. They effectively delivered a functional MVP, allowing clients like Jobvious to secure paying customers and achieve project goals.

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  • Al Akhzir Tech (Pvt) Ltd. Logotype

    4.8 2 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49
    Lahore, Pakistan

    Services provided

    10% Web Development
    20% E-Commerce Development
    20% Graphic Design +6
    10% Low/No Code Development
    10% Mobile App Development
    10% Search Engine Optimization
    10% Social Media Marketing
    5% Advertising
    5% Product Marketing

    Focus Areas

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

    Al Akhzir Tech (Pvt) Ltd. is a versatile technology firm specializing in website and mobile app development. Client feedback highlights their strong communication skills and commitment to understanding client needs, with 100% of reviewers appreciating their responsive service. While one review noted a project delay, satisfaction with their deliverables remains high, with 80% of clients expressing a high level of satisfaction.

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  • Upment Logotype

    5.0 3 reviews
    $5,000+
    $50 - $99 / hr
    2 - 9
    Sombor, Serbia

    Services provided

    15% Web Development
    60% E-Commerce Development
    10% CRM Consulting and SI +2
    10% Conversion Optimization
    5% Email Marketing

    Focus Areas

    10% JavaScript
    80% PHP
    10% AJAX

    Upment is a web development company specializing in performance optimization for Magento websites, enhancing both security and functionality. The company, praised for its responsive communication and professional project management, significantly improved website loading times and decreased bounce rates by 30%. Clients express 100% satisfaction with their services, highlighting their expertise and efficiency in resolving issues.

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  • SOK LAB Logotype

    SOK LAB

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

    Services provided

    35% Web Development
    35% IT Staff Augmentation
    30% Mobile App Development

    Focus Areas

    30% JavaScript
    35% PHP
    35% SQL

    SOK LAB is a web development company renowned for its expertise in website development and web design. The firm has consistently impressed clients, achieving a 90% success rating on Google for page speed and structure, and delivering projects ahead of schedule. Reviewers frequently highlight their professionalism and effective communication, with 100% expressing satisfaction with the results.

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  • HYFATech Logotype

    5.0 11 reviews
    $10,000+
    $25 - $49 / hr
    10 - 49
    Lahore, Pakistan

    Services provided

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

    Focus Areas

    25% JavaScript
    20% Swift
    15% Java +4
    10% ASP.NET
    10% PHP
    10% Redux
    10% SQL

    HYFATech is a web development company specializing in custom website and full-stack web development services. Clients commend their responsive and agile project management, with 100% of reviews highlighting effective communication and transparency. The team's expertise in web design and development consistently meets clients' needs, although some suggest starting SEO guidelines earlier in the process.

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  • iGenerate Digital Logotype

    iGenerate Digital

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

    Services provided

    10% Web Development
    60% Search Engine Optimization
    10% Low/No Code Development +2
    10% Pay Per Click
    10% Web Design

    Focus Areas

    15% JavaScript
    20% PHP
    15% Java +7
    15% SQL
    10% Redux
    5% ASP.NET
    5% C#
    5% C++
    5% Python
    5% XML

    iGenerate Digital offers Website Development, Web Design, and Online Development services, receiving high praise for their ability to deliver aesthetically pleasing, easy-to-navigate websites while enhancing organic web traffic through SEO. The reviews highlight exceptional project management, attentive communication, and strong alignment with client values, contributing to successful outcomes and high client satisfaction.

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  • TFT Technology Logotype

    5.0 1 review
    $10,000+
    $50 - $99 / hr
    50 - 249
    Dubai, United Arab Emirates

    Services provided

    30% Web Development
    20% Custom Software Development
    15% Blockchain +5
    10% E-Commerce Development
    10% Mobile App Development
    5% IoT Development
    5% Pay Per Click
    5% Search Engine Optimization

    Focus Areas

    20% JavaScript
    30% PHP
    15% Java +4
    15% Other programming & scripting languages
    10% SQL
    5% C#
    5% Kotlin

    TFT Technology is a web development company known for its expertise in custom website development and full-stack web development. The feedback reflects a 100% satisfaction rate, highlighting significant traffic increase (over 60%) for clients and commendable project management. Reviewers commend their communication, design skills, and ability to meet expectations consistently.

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  • Ahy Consulting Logotype

    4.7 15 reviews
    $10,000+
    $50 - $99 / hr
    50 - 249
    Sagarli Gaon, India

    Services provided

    10% Web Development
    60% E-Commerce Development
    10% Application Testing +2
    10% UX/UI Design
    10% Web Design

    Focus Areas

    30% JavaScript
    60% PHP
    10% AJAX

    Ahy Consulting is a distinguished web development company specializing in custom website development, web application development, and e-commerce solutions. The company consistently receives high praise for its technical expertise and project management skills, with 100% of reviewers highlighting its reliability, communication, and ability to deliver technically challenging projects on time.

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  • CodeMedia 360 Logotype

    CodeMedia 360

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

    Services provided

    20% Web Development
    70% E-Commerce Development
    10% UX/UI Design

    Focus Areas

    20% JavaScript
    20% PHP
    20% Python +2
    20% SQL
    20% XML

    CodeMedia 360 is a comprehensive web development company specializing in custom website development and web programming, delivering user-friendly and functional web solutions. The company receives overwhelmingly positive feedback, with approximately 100% of reviewers highlighting their commitment to client needs, proactive communication, and impressive project management. Clients commend CodeMedia 360 for their reliable service, quick integration of feedback, and the ability to enhance both functionality and sales through SEO and web design improvements.

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  • ePromoters Logotype

    4.9 4 reviews
    $1,000+
    < $25 / hr
    10 - 49
    Faisalabad, Pakistan

    Services provided

    15% Web Development
    15% E-Commerce Development
    15% Graphic Design +4
    15% Search Engine Optimization
    15% Social Media Marketing
    15% Web Design
    10% Translation

    Focus Areas

    15% JavaScript
    30% PHP
    15% AJAX +3
    15% Apex
    15% SQL
    10% XML

    ePromoters is a digital marketing agency specializing in enhancing online business visibility and performance. With a strong focus on Google Merchant Center management and SEO strategies, they deliver professional and timely solutions. The company is highly praised, with 100% positive feedback for their expertise, teamwork, and effective communication, contributing to significant sales and market growth for their clients.

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  • Envizn labs Logotype

    5.0 1 review
    $1,000+
    $25 - $49 / hr
    2 - 9
    New Town, India

    Services provided

    40% Web Development
    20% UX/UI Design
    10% Low/No Code Development +4
    10% Search Engine Optimization
    10% Web Design
    5% Graphic Design
    5% Logo

    Focus Areas

    40% JavaScript
    50% Typescript
    10% Python

    Envizn labs is a web development company specializing in Website Development and Web Design services. Reviewers consistently highlight their effective communication and timely delivery, with 100% of feedback being positive regarding their project management and development skills, particularly in handling custom website development projects.

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  • CodeCaste Pvt. Ltd. Logotype

    4.9 7 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49
    Ahmedabad, India

    Services provided

    60% Web Development
    20% E-Commerce Development
    20% Web Design

    Focus Areas

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

    CodeCaste Pvt. Ltd. is a web development company specializing in WordPress Web Development, Custom Website Development, and Full-Stack Web Development. Reviews highlight their timely, efficient delivery, excellent communication, and impressive coding expertise. With no significant areas for improvement noted, 100% of reviews emphasize their professional project management and ability to meet client needs effectively.

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  • Dikonia Logotype

    4.6 8 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Sahibzada Ajit Singh Nagar, India

    Services provided

    40% Web Development
    40% Mobile App Development
    20% Other Application Development

    Focus Areas

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

    Dikonia is a web development company specializing in custom website development, web application development, and full-stack web development using PHP and MySQL. Reviewers commend their responsiveness and ability to address issues quickly, with approximately 90% highlighting their effective communication. However, some noted challenges with time zone differences and occasional miscommunications. Overall, Dikonia is regarded as professional and adaptable, with room for improvement in internal testing.

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  • SHIP IT Inc. Logotype

    SHIP IT Inc.

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

    Services provided

    15% Web Development
    35% Mobile App Development
    25% Custom Software Development +2
    15% IoT Development
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    10% C#
    10% C++ +7
    10% Go
    10% Java
    10% Kotlin
    10% Objective C
    10% Python
    10% SQL
    10% Swift

    SHIP IT Inc. is a web development company specializing in full-stack web and mobile application development, with a notable expertise in using the Dart and Flutter framework. The feedback is overwhelmingly positive, with 100% of reviewers highlighting their technical competence, effective communication, and ability to stay on budget, making them an impressive partner for custom website and web application development projects.

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  • Antares Systems LLC Logotype

    Antares Systems LLC

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

    Services provided

    20% Web Development
    40% Web Design
    30% Social Media Marketing +1
    10% Logo

    Focus Areas

    30% JavaScript
    50% C#
    20% ASP.NET

    Antares Systems LLC is a digital marketing and web development company offering services such as website design, social media management, and CRM integration. Their reviews suggest a high level of satisfaction, with clients praising their efficiency, ease of collaboration, and ability to deliver quality work promptly. Approximately 100% of reviewers highlight their impressive project management and customer-focused approach.

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  • Masuga Design Logotype

    4.0 1 review
    $25,000+
    Undisclosed
    2 - 9
    Wyoming, MI

    Services provided

    60% Web Development
    20% Digital Strategy
    20% Web Design

    Focus Areas

    50% JavaScript
    50% PHP

    Masuga Design is a web development company specializing in custom website development with expertise in platforms like Craft. They are praised for their ability to translate customer visions into reality, resulting in increased site traffic and enhanced search visibility. While 100% of reviewers commend their initial development work, some express concerns about responsiveness and ongoing support costs.

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  • Appernity Logotype

    5.0 2 reviews
    $5,000+
    $25 - $49 / hr
    50 - 249
    delhi, India

    Services provided

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

    Focus Areas

    20% JavaScript
    20% PHP
    10% AJAX +5
    10% Java
    10% Kotlin
    10% Python
    10% Redux
    10% Swift

    Appernity is a web development company specializing in full-stack web development and custom website development. Review feedback highlights a 100% satisfaction rate with their services, noting exceptional UI/UX design and seamless project delivery. Clients commend their technical expertise and outstanding leadership, resulting in notable business growth, such as a 30% month-over-month increase in sales.

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  • DevRain Logotype

    4.8 5 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Kyiv, Ukraine

    Services provided

    30% Web Development
    20% AI Development
    20% Custom Software Development +3
    20% Mobile App Development
    5% Other Application Development
    5% UX/UI Design

    Focus Areas

    20% JavaScript
    60% ASP.NET
    10% C# +1
    10% Python

    DevRain is a web development company specializing in full-stack web development, offering custom website development and online development solutions. Their reviews reflect a 100% positive sentiment, highlighting their unique creativity and precision in delivering projects. Their work has notably increased website traffic from zero to over 4,000 users.

    See all 5 projects
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  • DevCode Development Studio Logotype

    5.0 4 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49
    Kyiv, Ukraine

    Services provided

    30% Web Development
    20% E-Commerce Development
    10% API Development +4
    10% Custom Software Development
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

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

    LiluWeb Development Studio is a full-stack web development company specializing in custom website development, web application development, and front-end development. Their reviews indicate a strong emphasis on fast, effective communication and problem-solving, with over 90% of reviewers praising their quick response times and ability to meet project requirements. Clients consistently commend their commitment to delivering high-quality, functional solutions.

    See all 4 projects
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  • ColoredCow Consulting Logotype

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

    Services provided

    40% Web Development
    30% Mobile App Development
    10% Application Management & Support +2
    10% Custom Software Development
    10% E-Commerce Development

    Focus Areas

    25% JavaScript
    25% PHP
    25% SQL +3
    10% AJAX
    10% Redux
    5% Typescript

    ColoredCow Consulting is a web development company specializing in custom website development and full-stack web development, with a strong focus on open-source solutions. They consistently receive positive feedback for their agile project management style and open communication, with approximately 90% of reviewers praising their commitment and ability to exceed expectations.

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  • Brandshark Logotype

    4.7 13 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49
    Bengaluru, India

    Services provided

    25% Web Development
    20% Branding
    20% UX/UI Design +3
    15% Content Marketing
    10% E-Commerce Development
    10% Social Media Marketing

    Focus Areas

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

    Brandshark is a web development firm noted for its proficiency in Website Development, Web Design, and Custom Website Development. With a focus on user-friendly design and responsive layouts, the company has earned positive feedback from all reviewers, highlighting their professional execution, on-time delivery, and impressive design skills. Approximately 100% of reviews emphasize their responsiveness and quality-driven approach, while clients consistently praise their value for cost.

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  • Crossfield Digital Logotype

    Crossfield Digital

    4.8 3 reviews
    $1,000+
    $100 - $149 / hr
    10 - 49

    Services provided

    40% Web Development
    25% Mobile App Development
    15% Web Design +3
    10% UX/UI Design
    5% Custom Software Development
    5% Digital Strategy

    Focus Areas

    10% JavaScript
    50% Ruby
    20% C++ +2
    10% Other programming & scripting languages
    10% Visual Basic

    Crossfield Digital is a full-stack web development company renowned for its expert website development and design services. With an impressive track record, 100% of reviewers commend their seamless project management and responsiveness. They excel in creating user-friendly platforms that enhance brand visibility and facilitate seamless user experiences, evidenced by their work on a global sports tournament's expanding online presence.

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  • Innoverse Logotype

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

    Services provided

    40% Web Development
    40% Custom Software Development
    20% AI Development

    Focus Areas

    30% JavaScript
    45% C#
    15% C++ +1
    10% Python

    Innoverse is a distinguished Web Development company specializing in Custom Website Development and Online Development. They received 100% positive feedback, with clients praising their project management efficiency, timely delivery, and problem-solving capabilities. Reviewers also commend their ability to deliver stylish and functional websites, highlighting their reliability and accessibility for ongoing support.

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  • Katalysis Net Logotype

    5.0 4 reviews
    $5,000+
    $100 - $149 / hr
    2 - 9
    St Albans, England

    Services provided

    30% Web Development
    30% Web Design
    20% Content Marketing +1
    20% Search Engine Optimization

    Focus Areas

    20% JavaScript
    50% PHP
    20% HTML5 +1
    10% jquery

    Katalysis Net is a web development company known for its custom website development and comprehensive web design services. With a focus on delivering high-quality and creative brand designs, 100% of reviewers commend their effective project management and seamless communication. The company excels in web application development, particularly in enhancing brand identity and optimizing client engagement through strategic online development solutions.

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  • Blue Copper Technologies Pvt Ltd Logotype

    4.9 6 reviews
    $5,000+
    < $25 / hr
    10 - 49
    Kolkata, India

    Services provided

    20% Web Development
    30% Custom Software Development
    20% Mobile App Development +3
    15% E-Commerce Development
    10% Enterprise App Modernization
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    20% Java
    20% PHP +7
    10% Python
    10% SQL
    10% Swift
    5% AJAX
    5% ASP.NET
    5% C#
    5% Objective C

    Blue Copper Technologies Pvt Ltd is a custom software development company specializing in mobile app development, web applications, and software solutions for various industries. Their reviews reveal a strong focus on project management, communication, and timely delivery, with 100% of clients praising their organizational skills and ability to meet deadlines. While some clients note a need for improved industry-specific understanding, overall satisfaction with their services is high, reflecting their commitment to quality and client success.

    See all 6 projects
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  • Xiteb Pvt Ltd Logotype

    4.9 5 reviews
    $5,000+
    < $25 / hr
    50 - 249
    Colombo, Sri Lanka

    Services provided

    10% Web Development
    30% E-Commerce Development
    20% Custom Software Development +3
    15% Mobile App Development
    15% Search Engine Optimization
    10% Web Design

    Focus Areas

    10% JavaScript
    40% PHP
    25% Kotlin +3
    15% HTML5
    5% AJAX
    5% XML

    Xiteb Pvt Ltd is a web development company offering services in eCommerce websites, custom software, and mobile app development. Reviews indicate a 100% satisfaction rate, praising their professionalism, timely delivery, and QA processes. Clients appreciate their project management skills and effective communication, mentioning they are highly supportive and value-oriented.

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  • Skytz Software Labs Logotype

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

    Services provided

    10% Web Development
    50% Mobile App Development
    10% AR/VR Development +3
    10% Graphic Design
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    31% Swift
    21% PHP +5
    11% Kotlin
    10% Java
    10% Objective C
    5% SQL
    2% Other programming & scripting languages

    Skytz Software Labs is a versatile software development company that offers mobile and web development solutions. Overall feedback is overwhelmingly positive, with clients praising their expertise, attention to detail, and proactive approach to problem-solving. Approximately 75% of reviews highlight their effective communication and project management, while 50% commend their ability to adapt and enhance client ideas, showcasing their commitment to client satisfaction.

    See all 5 projects
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  • Yellow Moose Logotype

    4.7 5 reviews
    $5,000+
    $100 - $149 / hr
    2 - 9
    Buckingham, England

    Services provided

    10% Web Development
    30% Web Design
    20% E-Commerce Development +5
    15% Search Engine Optimization
    10% UX/UI Design
    5% Digital Strategy
    5% Graphic Design
    5% Marketing Strategy

    Focus Areas

    30% JavaScript
    25% PHP
    15% HTML5 +4
    10% AJAX
    10% jquery
    5% Typescript
    5% XML

    Yellow Moose is a web development company offering services such as custom website development, web design, and web programming. The company receives overwhelmingly positive feedback, with 100% of reviewers highlighting their high-quality work, strong communication, and competitive pricing. Clients appreciate their transparency and proactive approach, with 67% noting their ability to effectively capture and implement visions.

    See all 5 projects
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  • Frogmouth Digital Logotype

    4.7 3 reviews
    $25,000+
    $150 - $199 / hr
    10 - 49
    San Diego, CA

    Services provided

    70% Web Development
    10% Custom Software Development
    10% E-Commerce Development +1
    10% Mobile App Development

    Focus Areas

    20% JavaScript
    50% PHP
    10% AJAX +2
    10% Python
    10% SQL

    Frogmouth Digital is a web development company specializing in Drupal-based solutions. Their work is consistently praised for meeting deadlines and delivering features on time, with 100% of reviewers noting timely project delivery. While communication could be improved, the company's adaptability and openness to exploring new technologies are frequently highlighted.

    See all 3 projects
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We evaluate service providers using a structured methodology that combines:

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

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Ability to deliver
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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 HTMLPanda
12 INOXOFT
13 Vention
14 Cleveroad
15 Scopic

List of the Top 15 JavaScript Development Companies

  1. ImageX Logotype

    ImageX

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

    Ability to deliver

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

    Service focus

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

    xfive

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

    Ability to deliver

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

    Service focus

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

    The Software House

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

    Ability to deliver

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

    Service focus

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

    Brainhub

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

    Ability to deliver

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

    Service focus

    45% Web Development
    75% JavaScript
    55% Other
    View Profile Visit Website
  5. Xmartlabs Logotype

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    GeekyAnts

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

    Ability to deliver

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

    Service focus

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

    FocusReactive

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

    Ability to deliver

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

    Service focus

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

    Lizard Global

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

    Ability to deliver

    39.1/40.0
    19.8/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

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

    PopArt Studio

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

    Ability to deliver

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

    Service focus

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

    Softonix

    $5,000+
    $25 - $49 / hr
    50 - 249
    Warszawa, Poland

    Ability to deliver

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

    Service focus

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

    HTMLPanda

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

    Ability to deliver

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

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  12. INOXOFT Logotype

    INOXOFT

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

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

    Scopic

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

    40% Web Development
    50% JavaScript
    60% Other
    View Profile Visit Website
  17. Boldare Logotype

    Boldare

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

    Ability to deliver

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

    Service focus

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

    unicrew

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

    Ability to deliver

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

    Service focus

    20% Web Development
    50% JavaScript
    80% Other
    View Profile Visit Website
  19. Arcanys Logotype

    Arcanys

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

    Ability to deliver

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

    Service focus

    30% Web Development
    20% JavaScript
    70% Other
    View Profile Visit Website
  20. Techuz InfoWeb Pvt. Ltd. Logotype

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

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

    Toptal

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

    Ability to deliver

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

    Service focus

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

    SpdLoad

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

    Ability to deliver

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

    Service focus

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

    The Frontend Company

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

    Ability to deliver

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

    Service focus

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

    PowerGate Software

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

    Ability to deliver

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

    Service focus

    30% Web Development
    21% JavaScript
    70% Other
    View Profile Visit Website
  25. Experion Technologies Logotype

    Experion Technologies

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

    Ability to deliver

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

    Service focus

    20% Web Development
    25% JavaScript
    80% Other
    View Profile Visit Website
  26. WPWeb Infotech Logotype

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

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

    Binary Studio

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

    Ability to deliver

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

    Service focus

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

    Vincit

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

    Ability to deliver

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

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  30. Naturaily Logotype

    Naturaily

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

    Ability to deliver

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

    Service focus

    40% Web Development
    70% JavaScript
    60% Other
    View Profile Visit Website

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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