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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: February 8, 2026
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15 Leaders 15 Contenders

21,635 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Featured

    What are Featured Providers?

    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

    4.9 88 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

    50% Web Development
    50% Custom Software Development

    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), excels in providing comprehensive web development and staff augmentation services. With a focus on custom website development, front-end and back-end development, they consistently deliver high-quality projects, demonstrating 100% positive feedback for their technical expertise and effective project management. Clients frequently highlight their reliability and seamless integration into existing teams, with 80% mentioning their exceptional communication skills and adaptability.

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    Reviews mention Efficient

    Client feedback highlights Digis' efficiency in project delivery and communication. One reviewer noted that Digis was 'very efficient both in terms of delivery and communication,' contributing to the successful launch of a React Native application on time and on budget. Their well-structured onboarding process and proactive approach to addressing concerns further emphasize their commitment to efficiency, leading to high satisfaction levels among clients.
    • Web Development for Research Ecosystem Developer
      4.5 Mar 30, 2021

      The developer we've worked with has ramped up quickly and we're finding continuing to grow in efficiency contributing to the site. The main spots for growth right now would be a continued increase in efficiency of coding + code reviewing and growth in ownership of particular projects.

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    • Software Dev & IT Staff Augmentation for Software Company
      5.0 Sep 8, 2025

      Digis was very efficient both in terms of delivery and communication. Successfully launched the React Native application on time and on budget. Helped the team become more familiar with React Native Development.

      Read Full Review
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    5 of 5 JavaScript reviews are 5 stars
    2 new reviews for JavaScript in past 6 months
    $10,000 – $49,000 avg. project cost

    JavaScript Experience

    Client feedback on Digis's JavaScript services reflects a high level of satisfaction, with 95% of reviews being positive. Many clients praised the expertise of their developers, particularly in frontend and full-stack development, noting timely delivery and effective communication as key strengths. Specific feedback highlighted significant improvements in project efficiency and feature development. Additionally, clients appreciated the agency's ability to provide skilled engineers quickly, confirming Digis as a reliable partner in enhancing their software solutions.

    Read Most Recent Review

    Industry Experience

    Digis has garnered positive feedback across various industries, including Media, Manufacturing, Information Technology, and Financial Services. They excel in software development, particularly in backend and frontend technologies like React, Angular, and Node.js, demonstrating strong project management and communication skills. Clients appreciate their adaptability and responsiveness, resulting in successful project outcomes, such as improved application functionality and streamlined user experiences. Industries like Media and IT have expressed high satisfaction with Digis' ability to integrate seamlessly into teams, indicating a strong fit for clients seeking expertise in these sectors.

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    Select Industry to see insights

    Human Resources Software Consulting Information technology Telecommunications Education Advertising & marketing Other industries Financial services eCommerce Retail Other Industry Automotive IT Services Energy & natural resources Gaming Transportation Business services Real estate Legal Arts, entertainment & music Wellness & Fitness Manufacturing Media

    Average Project Cost Breakdown

    $10,000 to $49,000 (24) $50,000 to $199,999 (16) Less than $10,000 (8) $200,000 to $999,999 (6) $1,000,000 to $9,999,999 (4)

    What Clients Have Said

    Client feedback on Digis highlights a strong sentiment regarding cost-effectiveness and value for money. Many clients noted that Digis offered competitive pricing while delivering quality work, with comments like "pricing fit our budget" and "good value for cost". Clients appreciated the alignment of company values, effective communication, and timely delivery, suggesting a reliable partnership. Overall, Digis is perceived as a cost-effective solution that meets client expectations without compromising on quality.
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  • petitcode Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    2 - 9
    Berlin, Germany

    Services provided

    15% Web Development
    15% Custom Software Development
    15% Mobile App Development +8
    10% Business Consulting
    10% Digital Strategy
    10% IT Strategy Consulting
    5% E-Commerce Development
    5% HR Consulting
    5% Other Application Development
    5% UX/UI Design
    5% Web Design

    Focus Areas

    20% JavaScript
    20% PHP
    15% Java +6
    10% Kotlin
    10% Redux
    10% Swift
    5% C#
    5% Ember.js
    5% Objective C

    Petitcode is a software development company. The company is in Berlin, Germany and Köln, Germany. Their team specializes in Custom Software Development and Web Development.

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  • Brain Stem Technologies Pvt Ltd Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    10 - 49
    Jaipur, India

    Services provided

    10% Web Development
    15% Affiliate Marketing
    15% Custom Software Development +5
    15% Mobile App Development
    15% Search Engine Optimization
    10% AI Development
    10% Content Marketing
    10% Social Media Marketing

    Focus Areas

    20% JavaScript
    40% ASP
    20% C++ +2
    10% Java
    10% Python

    Software development company Brain Stem Technologies Pvt Ltd was launched in 2018. The company specializes in Custom Software Development and Mobile App Development, and is small.

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  • HighQ Desk Logotype

    HighQ Desk

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

    Services provided

    15% Web Development
    25% AI Development
    25% Blockchain +2
    25% Mobile App Development
    10% AR/VR Development

    Focus Areas

    12% JavaScript
    22% SQL
    18% Redux +3
    18% Swift
    18% Visual Basic
    12% C#

    HighQ Desk provides services in Website Development, Game Development, and Video Production. Reviews highlight their ability to deliver projects on time and within budget, emphasizing their skilled developers and animators. Clients appreciate their responsiveness and alignment with company values, noting minimal need for guidance and excellent project management.

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  • BrandVillage Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    Carlton, Australia

    Services provided

    10% Web Development
    20% Branding
    20% Logo +4
    20% Web Design
    10% Graphic Design
    10% Packaging Design
    10% Print Design

    Focus Areas

    25% JavaScript
    25% Python
    20% C++ +3
    10% C
    10% Java
    10% SQL

    BrandVillage is a branding agency. The small Carlton, Australia-based team provides Branding and Web Design. The agency was launched in 2014.

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  • Bing Digital Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    10 - 49
    London, England

    Services provided

    10% Web Development
    10% Conversion Optimization
    10% Digital Strategy +7
    10% E-Commerce Development
    10% Mobile & App Marketing
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    20% Ember.js
    20% PHP +2
    20% SQL
    20% XML

    Bing Digital is an UX company established in 1999. Their team focuses on UX/UI Design and Conversion Optimization.

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  • ActiveWizards Logotype

    Not yet reviewed

    $5,000+
    $150 - $199 / hr
    10 - 49
    Sheridan, WY

    Services provided

    10% Web Development
    20% AI Development
    20% BI & Big Data Consulting & SI +5
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% Digital Engineering
    10% E-Commerce Development
    10% IT Strategy Consulting

    Focus Areas

    20% JavaScript
    80% Python

    Business intelligence company ActiveWizards was launched in 2004. The agency provides BI & big data consulting & SI and Artificial Intelligence, and is small.

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  • Gate 39 Media Logotype

    Not yet reviewed

    $5,000+
    $150 - $199 / hr
    10 - 49
    Chicago, IL

    Services provided

    20% Web Development
    40% Custom Software Development
    15% CRM Consulting and SI +2
    15% Digital Strategy
    10% Cloud Consulting & SI

    Focus Areas

    10% JavaScript
    25% C#
    25% PHP +6
    10% Other programming & scripting languages
    10% SQL
    5% AJAX
    5% ASP.NET
    5% Java
    5% Python

    Gate 39 Media, a custom software development company, is headquartered in Chicago, Illinois. Established in 2003, the team offers Custom Software Development and Web Development.

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  • INFINITE SYNERGY Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    50 - 249
    Astana, Kazakhstan

    Services provided

    25% Web Development
    25% Enterprise App Modernization
    15% Mobile App Development +7
    10% Application Management & Support
    10% Application Testing
    5% Custom Software Development
    3% Cloud Consulting & SI
    3% ERP Consulting and SI
    2% IT Managed Services
    2% IT Staff Augmentation

    Focus Areas

    13% JavaScript
    20% C#
    20% Java +10
    10% Typescript
    5% AJAX
    5% ASP.NET
    5% Kotlin
    5% Objective C
    5% Redux
    5% SQL
    5% Swift
    1% ASP
    1% XML

    Website development firm INFINITE SYNERGY was launched in 2018. The midsize team focuses on Web Development and Enterprise App Modernization.

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  • Tony Demot Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    Freelancer
    Burley in Wharfedale, England

    Services provided

    45% Web Development
    45% Web Design
    10% AR/VR Development

    Focus Areas

    31% JavaScript
    19% Typescript
    13% C# +3
    13% PHP
    13% Python
    11% SQL

    Tony Demot is a web design company. They were launched in 2022, and their services include Web Design and Web Development.

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  • Openwave Computing Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    50 - 249
    New York, NY

    Services provided

    15% Web Development
    20% Mobile App Development
    20% Web Design +5
    10% Blockchain
    10% E-Commerce Development
    10% Search Engine Optimization
    10% UX/UI Design
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    10% ASP
    10% ASP.NET +10
    10% C#
    10% Objective C
    10% PHP
    10% Visual Basic
    5% AJAX
    5% Java
    5% Other programming & scripting languages
    5% Python
    5% SQL
    5% Swift

    Openwave Computing is an application development firm. They are in New York, New York and Kuala Lumpur, Malaysia. Their team provides Mobile App Development and Web Design.

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  • Stun and Awe Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    2 - 9
    Berlin, Germany

    Services provided

    10% Web Development
    15% Corporate Training & Coaching
    15% Product Marketing +7
    10% Business Consulting
    10% CRM Consulting and SI
    10% Digital Strategy
    10% Marketing Strategy
    10% UX/UI Design
    5% AI Development
    5% BI & Big Data Consulting & SI

    Focus Areas

    30% JavaScript
    30% HTML5
    15% SQL +3
    10% Other programming & scripting languages
    10% PHP
    5% Python

    Stun and Awe is a small Corporate Training & Coaching company. They offer Corporate Training & Coaching and Product Marketing and were launched in 2017.

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  • Arista IT Services Ltd. Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Dhaka, Bangladesh

    Services provided

    20% Web Development
    35% Custom Software Development
    25% E-Commerce Development +1
    20% IT Managed Services

    Focus Areas

    15% JavaScript
    20% ASP
    20% PHP +4
    15% Apex
    10% Java
    10% SQL
    10% XML

    Arista IT Services Ltd., a small custom software development company, is in Dhaka, Bangladesh. The team offers Custom Software Development and E-Commerce Development.

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  • Rimik Technologies Logotype

    Rimik Technologies

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Custom Software Development
    20% E-Commerce Development +3
    20% Mobile App Development
    5% Application Management & Support
    5% Other Application Development

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP +8
    10% ASP.NET
    10% C#
    10% PHP
    10% Python
    10% SQL
    10% Typescript
    5% Ember.js
    5% XML

    Small software development firm Rimik Technologies, is located in Bharatpur, India. The team offers Custom Software Development and Web Development.

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  • Noralogix Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49
    Johannesburg, South Africa

    Services provided

    10% Web Development
    40% Custom Software Development
    30% Enterprise App Modernization +2
    10% Cloud Consulting & SI
    10% Other Application Development

    Focus Areas

    25% JavaScript
    50% C#
    15% Typescript +1
    10% SQL

    Noralogix is a Johannesburg, South Africa-based custom software development firm. Established in 2017, the team provides Custom Software Development and Enterprise App Modernization.

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  • Domino New York Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    2 - 9
    Brooklyn, NY

    Services provided

    20% Web Development
    20% Graphic Design
    20% Logo +3
    20% UX/UI Design
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    25% JavaScript
    25% HTML5
    25% Python +1
    25% Typescript

    Domino New York is a small Brooklyn, New York-based web design agency. The team provides Web Design and UX/UI Design.

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  • Cyber Octane Interactive Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    2 - 9
    Polgasowita, Sri Lanka

    Services provided

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

    Focus Areas

    33% JavaScript
    34% PHP
    33% Python

    Cyber Octane Interactive is an user experience company. The team is in Polgasowita, Sri Lanka, and their services include UX/UI Design and AR/VR development.

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  • GVBE Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Branding
    20% Mobile App Development +4
    20% UX/UI Design
    10% AR/VR Development
    10% Custom Software Development
    10% Digital Strategy

    Focus Areas

    43% JavaScript
    43% Ruby
    14% Ember.js

    GVBE is a Tallinn, Estonia-based UX company. Their services include UX/UI Design and Branding.

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  • Falloutecom Software Solution Logotype

    Falloutecom Software Solution

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9

    Services provided

    17% Web Development
    17% Mobile App Development
    15% Custom Software Development +4
    15% Social Media Marketing
    12% E-Commerce Development
    12% Graphic Design
    12% Search Engine Optimization

    Focus Areas

    30% JavaScript
    30% PHP
    20% HTML5 +1
    20% Other programming & scripting languages

    Falloutecom Software Solution, a website development company, was founded in 2022. The team provides Web Development and Mobile App Development.

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  • MAY32 Agency Logotype

    MAY32 Agency

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9

    Services provided

    20% Web Development
    20% Branding
    20% Content Marketing +2
    20% Search Engine Optimization
    20% Web Design

    Focus Areas

    33% JavaScript
    34% HTML5
    33% PHP

    Launched in 2024, MAY32 Agency, a small branding agency, is based in London, England and Taipei, Taiwan. Their team provides Branding and Content Marketing.

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  • OrbithinX Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9
    Lahore, Pakistan

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Cybersecurity +2
    20% Digital Strategy
    20% Mobile App Development

    Focus Areas

    33% JavaScript
    34% Java
    33% Swift

    Launched in 2024, OrbithinX, a small Digital Strategy company, is headquartered in Lahore, Pakistan. Their services include Digital Strategy and Cybersecurity.

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  • Corebit Infosoft Logotype

    Corebit Infosoft

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9

    Services provided

    30% Web Development
    30% Mobile App Development
    20% Custom Software Development +2
    12% UX/UI Design
    8% Graphic Design

    Focus Areas

    17% JavaScript
    20% SQL
    18% PHP +5
    10% Kotlin
    10% Python
    10% Swift
    10% Typescript
    5% Redux

    Corebit Infosoft is a web development company. Founded in 2019, the team focuses on Web Development and Mobile App Development. The agency is located in Rajkot, India.

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  • Software Farm Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Jaipur, India

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% Digital Strategy +2
    20% Mobile App Development
    20% Web Design

    Focus Areas

    33% JavaScript
    34% Java
    33% Python

    Software Farm, a Digital Strategy company, is based in Jaipur, India and Malda, India. They specialize in Digital Strategy and Web Design and were founded in 2024.

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  • Shoppias Ecommerce Logotype

    Shoppias Ecommerce

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    10% Web Development
    75% E-Commerce Development
    15% Mobile App Development

    Focus Areas

    20% JavaScript
    60% PHP
    20% Python

    Shoppias Ecommerce, an e-commerce development firm, is headquartered in Rosario, Argentina and Sheridan, Wyoming. Their services include E-Commerce Development and Mobile App Development.

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  • Zneus Technologies Logotype

    Not yet reviewed

    $1,000+
    Undisclosed
    10 - 49
    Sahibzada Ajit Singh Nagar, India

    Services provided

    30% Web Development
    40% Mobile App Development
    30% UX/UI Design

    Focus Areas

    10% JavaScript
    30% Kotlin
    30% Objective C +1
    30% Swift

    Zneus Technologies is an app development company. Their team is based in Sahibzada Ajit Singh Nagar, India. The company offers Mobile App Development and UX/UI Design.

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  • Astorick Technologies Logotype

    Not yet reviewed

    $1,000+
    Undisclosed
    10 - 49
    Pune, India

    Services provided

    20% Web Development
    30% Custom Software Development
    20% Mobile App Development +3
    10% AR/VR Development
    10% Blockchain
    10% UX/UI Design

    Focus Areas

    20% JavaScript
    20% Kotlin
    20% Swift +4
    10% Go
    10% Java
    10% Objective C
    10% Redux

    Astorick Technologies is a custom software development firm. They offer Custom Software Development and Mobile App Development and were established in 2020.

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  • ANG Solutions Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    10 - 49
    Tel Aviv-Yafo, Israel

    Services provided

    30% Web Development
    50% Custom Software Development
    10% Cybersecurity +1
    10% IT Managed Services

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% C# +7
    10% Go
    10% Java
    10% Python
    10% Ruby
    10% SQL
    10% Swift
    10% Typescript

    ANG Solutions is a software development company. In Tel Aviv-Yafo, Israel, their small team specializes in Custom Software Development and Web Development. The company was established in 2011.

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  • EBO - Edusha Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Delhi, India

    Services provided

    10% Web Development
    10% Custom Software Development
    10% Mobile App Development +14
    5% AI Development
    5% Branding
    5% Content Marketing
    5% Digital Strategy
    5% E-Commerce Development
    5% Graphic Design
    5% IT Strategy Consulting
    5% IoT Development
    5% Logo
    5% Packaging Design
    5% Social Media Marketing
    5% UX/UI Design
    5% Video Production
    5% Web Design

    Focus Areas

    30% JavaScript
    40% Typescript
    20% PHP +2
    5% SQL
    5% XML

    EBO - Edusha is a custom software development firm. The team offers Custom Software Development and Web Development and is headquartered in Delhi, India.

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  • Fasi Soft Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Hujra Shah Muqeem, Pakistan

    Services provided

    20% Web Development
    20% Web Design
    15% E-Commerce Development +8
    10% Email Marketing
    5% Affiliate Marketing
    5% Content Marketing
    5% Digital Strategy
    5% Other Digital Marketing
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design

    Focus Areas

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

    Fasi Soft, a web design agency, was founded in 2019. Located in Hujra Shah Muqeem, Pakistan, the team offers Web Design and Web Development.

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  • Jethi Tech Solutions Pvt Ltd Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    50 - 249
    Jaipur, India

    Services provided

    10% Web Development
    15% AR/VR Development
    12% Low/No Code Development +13
    10% Custom Software Development
    10% Mobile App Development
    5% Application Testing
    5% Blockchain
    5% E-Commerce Development
    5% Graphic Design
    5% IoT Development
    5% Logo
    5% Market Research
    5% Wearable App Development
    1% Other Application Development
    1% UX/UI Design
    1% Web Design

    Focus Areas

    21% JavaScript
    14% PHP
    14% SQL +7
    9% Kotlin
    7% AJAX
    7% ASP.NET
    7% Other programming & scripting languages
    7% Python
    7% Redux
    7% Typescript

    Jethi Tech Solutions Pvt Ltd is a midsize Jaipur, India-based AR/VR development company. Their services include AR/VR development and Custom Software Development.

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  • Spectrum Future Technology Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    50 - 249
    Peoria, IL

    Services provided

    15% Web Development
    20% Mobile App Development
    10% AI Development +7
    10% Custom Software Development
    10% IT Staff Augmentation
    10% Low/No Code Development
    10% UX/UI Design
    5% AI Consulting
    5% E-Commerce Development
    5% Staffing

    Focus Areas

    16% JavaScript
    25% Visual Basic
    16% Java +3
    16% PHP
    16% Python
    11% SQL

    Spectrum Future Technology is a Peoria, Illinois-based software development firm. Their services include Custom Software Development and Mobile App Development.

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  • Beyond Technologies Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Glen Allen, VA

    Services provided

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

    Focus Areas

    11% JavaScript
    22% Typescript
    17% ASP.NET +5
    17% C#
    11% jquery
    10% Elixir
    6% Go
    6% backbone.js

    Beyond Technologies, a midsize software development company, is based in Glen Allen, Virginia and Lahore, Pakistan. The team focuses on Custom Software Development and Web Development.

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  • Nixaam LLC Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    50 - 249
    Karachi, Pakistan

    Services provided

    20% Web Development
    20% AI Development
    20% Content Marketing +3
    20% Web Design
    10% AR/VR Development
    10% Custom Software Development

    Focus Areas

    11% JavaScript
    17% ASP.NET
    17% C# +5
    11% HTML5
    11% Python
    11% Redux
    11% SQL
    11% jquery

    Nixaam LLC, a Content Marketing company, focus on Content Marketing and Web Design. They were launched in 2010.

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  • Valueans Logotype

    Valueans

    4.7 3 reviews
    $1,000+
    < $25 / hr
    10 - 49

    Services provided

    20% Web Development
    20% Mobile App Development
    10% AI Development +5
    10% Custom Software Development
    10% Low/No Code Development
    10% Other Application Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    15% JavaScript
    15% Java
    15% Other programming & scripting languages +5
    15% PHP
    15% Python
    10% C#
    10% C++
    5% HTML5

    Welcome to Valueans, your friend in the world of app development! We're all about custom application development and helping your business shine with the latest tech. Our team is great at making

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  • Ingenuity Technologies Limited Logotype

    Ingenuity Technologies Limited

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49

    Services provided

    20% Web Development
    20% Application Testing
    20% Custom Software Development +2
    20% IT Strategy Consulting
    20% Mobile App Development

    Focus Areas

    15% JavaScript
    20% SQL
    15% C# +5
    10% ASP.NET
    10% C++
    10% Java
    10% PHP
    10% Visual Basic

    Ingenuity Technologies Limited is a small software development company. Launched in 2012, the team specializes in Custom Software Development and IT strategy consulting.

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  • Boost by Design Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    10 - 49
    Savannah, GA

    Services provided

    15% Web Development
    20% Digital Strategy
    15% Search Engine Optimization +7
    10% E-Commerce Development
    10% Pay Per Click
    10% Web Design
    5% Conversion Optimization
    5% Email Marketing
    5% Print Design
    5% Social Media Marketing

    Focus Areas

    20% JavaScript
    50% PHP
    15% SQL +2
    10% AJAX
    5% XML

    Boost by Design, a Digital Strategy company, focuses on Digital Strategy and Search Engine Optimization. The agency is in Savannah, Georgia and Richmond Hill, Georgia.

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  • Digital Web Experts Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49
    New Delhi, India

    Services provided

    25% Web Development
    25% Web Design
    20% Search Engine Optimization +2
    15% E-Commerce Development
    15% Social Media Marketing

    Focus Areas

    10% JavaScript
    50% PHP
    30% SQL +1
    10% XML

    Web design company Digital Web Experts is headquartered in New Delhi, India. The team specializes in Web Design and Web Development.

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  • Langtech Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    San Francisco, CA

    Services provided

    10% Web Development
    20% Custom Software Development
    20% IT Managed Services +6
    10% Cloud Consulting & SI
    10% Cybersecurity
    10% IT Strategy Consulting
    10% Mobile App Development
    5% BI & Big Data Consulting & SI
    5% CRM Consulting and SI

    Focus Areas

    25% JavaScript
    25% C#
    25% SQL +3
    10% PHP
    10% Visual Basic
    5% Other programming & scripting languages

    Founded in 1987, Langtech is a small IT managed services company. Their services include IT managed services and Custom Software Development.

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  • Minebrat Private Limited Logotype

    Not yet reviewed

    $10,000+
    < $25 / hr
    10 - 49
    Bengaluru, India

    Services provided

    15% Web Development
    15% Custom Software Development
    15% E-Commerce Development +8
    15% Mobile App Development
    10% Web Design
    8% UX/UI Design
    5% BI & Big Data Consulting & SI
    5% IT Managed Services
    5% IT Staff Augmentation
    5% Other Application Development
    2% Logo

    Focus Areas

    20% JavaScript
    20% Java
    20% PHP +2
    20% SQL
    20% Typescript

    Established in 2017, Minebrat Private Limited is a small Bengaluru, India-based custom software development company. Their services include Custom Software Development and Web Development.

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  • AddBloom Logotype

    Not yet reviewed

    $10,000+
    Undisclosed
    10 - 49
    Dbayeh, Lebanon

    Services provided

    20% Web Development
    20% Digital Strategy
    20% Web Design +3
    15% Media Planning & Buying
    15% Social Media Marketing
    10% Conversion Optimization

    Focus Areas

    15% JavaScript
    25% Other programming & scripting languages
    15% HTML5 +3
    15% PHP
    15% Typescript
    15% jquery

    AddBloom is a Digital Strategy company. Located in Dbayeh, Lebanon and Dubai, United Arab Emirates, the company provides Digital Strategy and Web Design.

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  • Primal Codes Technologies Logotype

    Primal Codes Technologies

    Not yet reviewed

    Undisclosed
    < $25 / hr
    10 - 49

    Services provided

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

    Focus Areas

    15% JavaScript
    20% AJAX
    20% PHP +3
    15% Kotlin
    15% SQL
    15% Swift

    Headquartered in India, Primal Codes Technologies is a software development company. They provide Custom Software Development and E-Commerce Development and were launched in 2015.

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  • Xenber Sdn Bhd Logotype

    Xenber Sdn Bhd

    Not yet reviewed

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

    Services provided

    25% Web Development
    30% Mobile App Development
    15% Custom Software Development +3
    10% AR/VR Development
    10% Cloud Consulting & SI
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    20% C#
    20% Java +3
    20% Objective C
    20% PHP
    10% SQL

    Xenber Sdn Bhd, a small app development firm, is in Petaling Jaya, Malaysia. The team focuses on Mobile App Development and Web Development.

    Read more
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  • Website design and Development Pakistan Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Abbottabad, Pakistan

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Web Design +6
    15% Search Engine Optimization
    5% Content Marketing
    5% IT Managed Services
    5% Logo
    5% Other Digital Marketing
    5% Video Production

    Focus Areas

    15% JavaScript
    70% PHP
    10% AJAX +1
    5% XML

    Website design and Development Pakistan, a custom software development company, was established in 2007. The team offers Custom Software Development and Web Design.

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  • BuildEmpire Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    60% Custom Software Development
    10% Enterprise App Modernization +2
    10% Other Application Development
    10% UX/UI Design

    Focus Areas

    25% JavaScript
    25% Ember.js
    25% PHP +1
    25% Ruby

    Launched in 2002, BuildEmpire, a small custom software development company, is located in Manchester, England. Their team provides Custom Software Development and Enterprise App Modernization.

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  • Stimulus Logotype

    Not yet reviewed

    $10,000+
    Undisclosed
    10 - 49
    Balmain, Australia

    Services provided

    20% Web Development
    15% Custom Software Development
    15% Graphic Design +4
    15% Search Engine Optimization
    15% Web Design
    10% Logo
    10% Mobile App Development

    Focus Areas

    15% JavaScript
    20% Objective C
    15% Java +4
    15% PHP
    15% Perl
    10% C
    10% C++

    Stimulus is a web development company launched in 2000. Their services include Web Development and Custom Software Development.

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  • Text Connects Logotype

    Not yet reviewed

    $10,000+
    $150 - $199 / hr
    10 - 49
    Killingly, CT

    Services provided

    10% Web Development
    70% E-Commerce Development
    10% Custom Software Development +2
    5% Business Consulting
    5% IoT Development

    Focus Areas

    25% JavaScript
    40% Visual Basic
    15% SQL +2
    10% ASP.NET
    10% C#

    Established in 2001, Text Connects is an e-commerce development company. Located in Killingly, Connecticut, the team focuses on E-Commerce Development and Custom Software Development.

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  • Sundown Solutions Logotype

    Not yet reviewed

    $25,000+
    $150 - $199 / hr
    10 - 49
    Altham, England

    Services provided

    10% Web Development
    20% IT Managed Services
    15% IT Strategy Consulting +7
    10% Cloud Consulting & SI
    10% Cybersecurity
    10% Enterprise App Modernization
    10% Mobile App Development
    5% Application Management & Support
    5% BI & Big Data Consulting & SI
    5% Custom Software Development

    Focus Areas

    25% JavaScript
    25% C#
    20% SQL +5
    10% Typescript
    5% AJAX
    5% C++
    5% PHP
    5% Visual Basic

    Sundown Solutions is an IT managed services company. Founded in 2008, their team specializes in IT managed services and IT strategy consulting.

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  • Salesforce Offshore Support Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Ajman, United Arab Emirates

    Services provided

    10% Web Development
    40% CRM Consulting and SI
    20% IT Managed Services +3
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% Web Design

    Focus Areas

    25% JavaScript
    25% PHP
    25% SQL +1
    25% Visual Basic

    Salesforce Offshore Support, a CRM consulting and SI company, is based in Ajman, United Arab Emirates. The team offers CRM consulting and SI and IT managed services.

    Read more
    View Profile
  • Evolution Key for Information Technology Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    10 - 49
    Amman, Jordan

    Services provided

    25% Web Development
    20% E-Commerce Development
    20% Mobile App Development +6
    10% Search Engine Optimization
    5% Application Testing
    5% Custom Software Development
    5% IT Managed Services
    5% UX/UI Design
    5% Web Design

    Focus Areas

    10% JavaScript
    45% PHP
    20% AJAX +2
    20% SQL
    5% Python

    Evolution Key for Information Technology, a website development firm, offer Web Development and Mobile App Development. They were established in 2020.

    Read more
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  • Digital Marketing Company in Delhi NCR | Daylogic Infotech Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    10 - 49
    Noida, India

    Services provided

    10% Web Development
    10% Digital Strategy
    10% Email Marketing +8
    10% Low/No Code Development
    10% Mobile & App Marketing
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Web Design
    5% E-Commerce Development
    5% UX/UI Design

    Focus Areas

    25% JavaScript
    45% PHP
    20% Other programming & scripting languages +1
    10% Python

    Web development company Digital Marketing Company in Delhi NCR | Daylogic Infotech focuses on Web Development and Digital Strategy. They were launched in 2018.

    Read more
    View Profile
  • Fuel Media Inc. Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    10 - 49
    Cambridge, MA

    Services provided

    10% Web Development
    20% Graphic Design
    15% Branding +5
    15% Email Marketing
    10% Advertising
    10% Content Marketing
    10% Low/No Code Development
    10% Social Media Marketing

    Focus Areas

    25% JavaScript
    25% AJAX
    25% PHP +3
    10% SQL
    10% XML
    5% Other programming & scripting languages

    Launched in 2007, Fuel Media Inc. Is a small graphic design company headquartered in Cambridge, Massachusetts. Their team focuses on Graphic Design and Web Development.

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

Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.

We evaluate service providers using a structured methodology that combines:

  • In-depth client interviews and ratings
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  • Market presence
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This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.

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Ability to deliver
Focus
Clutch Leaders Matrix

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

1 Brainhub
2 ImageX
3 xfive
4 The Software House
5 ATEAM SOFT SOLUTIONS
6 Airdev
7 Xmartlabs
8 Softonix
9 Toptal
10 Lizard Global
11 INOXOFT
12 PopArt Studio
13 GeekyAnts
14 SpdLoad
15 Brainium Information Technologies

List of the Top 15 JavaScript Development Companies

  1. Brainhub Logotype

    Brainhub

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

    Ability to deliver

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

    Service focus

    50% Web Development
    75% JavaScript
    50% Other
    View Profile Visit Website
  2. 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
  3. xfive Logotype

    xfive

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

    Ability to deliver

    39.5/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

    70% Web Development
    50% JavaScript
    30% Other
    View Profile Visit Website
  4. The Software House Logotype

    The Software House

    $10,000+
    $50 - $99 / hr
    50 - 249
    Gliwice, Poland

    Ability to deliver

    39.4/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    45% Web Development
    60% JavaScript
    55% Other
    View Profile Visit Website
  5. ATEAM SOFT SOLUTIONS Logotype

    ATEAM SOFT SOLUTIONS

    $10,000+
    < $25 / hr
    250 - 999
    Thiruvananthapuram, India

    Ability to deliver

    38.1/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

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

    Airdev

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

    Ability to deliver

    39.1/40.0
    19.8/20 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. 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
  8. Softonix Logotype

    Softonix

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

    Ability to deliver

    36.9/40.0
    18/20 Reviews
    10/10 Clients & Experience
    8.9/10 Market Presence

    Service focus

    70% Web Development
    50% JavaScript
    30% Other
    View Profile Visit Website
  9. Toptal Logotype

    Toptal

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

    Ability to deliver

    39.5/40.0
    19.6/20 Reviews
    9.9/10 Clients & Experience
    10/10 Market Presence

    Service focus

    15% Web Development
    25% JavaScript
    85% Other
    View Profile Visit Website
  10. 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
  11. INOXOFT Logotype

    INOXOFT

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

    Ability to deliver

    39.8/40.0
    19.8/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  12. 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
  13. 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
  14. SpdLoad Logotype

    SpdLoad

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

    Ability to deliver

    36.8/40.0
    17/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    45% Web Development
    50% JavaScript
    55% Other
    View Profile Visit Website
  15. Brainium Information Technologies Logotype

    Brainium Information Technologies

    $10,000+
    < $25 / hr
    250 - 999
    Kolkata, India

    Ability to deliver

    36.7/40.0
    19.4/20 Reviews
    9/10 Clients & Experience
    8.4/10 Market Presence

    Service focus

    35% Web Development
    30% JavaScript
    65% Other
    View Profile Visit Website
  16. HTMLPanda Logotype

    HTMLPanda

    $1,000+
    < $25 / hr
    250 - 999
    Boston, 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. Sigma Software Group Logotype

    Sigma Software Group

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

    Ability to deliver

    38.8/40.0
    19/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

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

    Incora

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

    Ability to deliver

    37.2/40.0
    18.2/20 Reviews
    10/10 Clients & Experience
    9/10 Market Presence

    Service focus

    40% Web Development
    50% JavaScript
    60% 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

    36.4/40.0
    16.8/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

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

    WPWeb Infotech

    $5,000+
    < $25 / hr
    50 - 249
    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
  22. Human Made Logotype

    Human Made

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

    Ability to deliver

    38.2/40.0
    18.4/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    100% Web Development
    30% JavaScript
    View Profile Visit Website
  23. 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
  24. Experion Technologies Logotype

    Experion Technologies

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

    Ability to deliver

    36.8/40.0
    17.2/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

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

    Blazity

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

    Ability to deliver

    37.5/40.0
    18.4/20 Reviews
    10/10 Clients & Experience
    9.2/10 Market Presence

    Service focus

    50% Web Development
    70% JavaScript
    50% Other
    View Profile Visit Website
  27. XWP Logotype

    XWP

    $50,000+
    $150 - $199 / hr
    50 - 249
    Chelsea, Australia

    Ability to deliver

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

    Service focus

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

    Probey Services

    $1,000+
    < $25 / hr
    1,000 - 9,999
    London, England

    Ability to deliver

    36.5/40.0
    19.2/20 Reviews
    9.3/10 Clients & Experience
    8/10 Market Presence

    Service focus

    20% Web Development
    25% JavaScript
    80% Other
    View Profile Visit Website
  29. 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
  30. Oshyn Logotype

    Oshyn

    $25,000+
    $100 - $149 / hr
    50 - 249
    Long Beach, CA

    Ability to deliver

    36.2/40.0
    18.2/20 Reviews
    10/10 Clients & Experience
    8/10 Market Presence

    Service focus

    100% Web Development
    40% JavaScript
    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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