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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 5, 2026
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15 Leaders 15 Contenders

21,627 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.

    See all 88 projects
    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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    $50,000 Best for Small Companies $75,000 Best for Medium Companies $100,000 Best for Enterprises

    Custom Product Development

    Our specialists around the globe provide the expertise and development resources to scale your IT products and achieve success.
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  • Skiie LLP Logotype

    Skiie LLP

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Content Marketing
    10% Custom Software Development +7
    10% E-Commerce Development
    10% Email Marketing
    10% Mobile App Development
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    20% PHP
    20% Python +3
    20% Typescript
    10% C
    10% Redux

    Founded in 2023, Skiie LLP, a small social media marketing agency, is headquartered in Ibadan, Nigeria. Their services include Social Media Marketing and Content Marketing.

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  • OFGA multimedia Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    2 - 9
    Chennai, India

    Services provided

    20% Web Development
    40% Mobile App Development
    20% AR/VR Development +1
    20% E-Commerce Development

    Focus Areas

    10% JavaScript
    15% C++
    10% C# +9
    10% Java
    10% PHP
    10% Python
    10% SQL
    5% C
    5% HTML5
    5% Typescript
    5% UnrealScript
    5% jquery

    OFGA multimedia, an application development company, was established in 2022. The agency specializes in Mobile App Development and Web Development, and is small.

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  • WordPress Wallah Ltd Logotype

    WordPress Wallah Ltd

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9

    Services provided

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

    Focus Areas

    10% JavaScript
    40% PHP
    10% AJAX +4
    10% HTML5
    10% Other programming & scripting languages
    10% SQL
    10% jquery

    WordPress Wallah Ltd, a web design agency, is based in London, England. Founded in 2024, the team offers Web Design and Web Development.

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  • Qodera Software Solutions Logotype

    Qodera Software Solutions

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% UX/UI Design
    10% Custom Software Development +6
    10% E-Commerce Development
    10% IoT Development
    10% Mobile App Development
    10% Other Application Development
    10% Wearable App Development
    10% Web Design

    Focus Areas

    20% JavaScript
    20% Python
    15% Kotlin +4
    15% SQL
    15% Typescript
    10% Swift
    5% Java

    Established in 2023, Qodera Software Solutions is an user experience design agency. Headquartered in Cairo, Egypt, the team focuses on UX/UI Design and Web Design.

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  • MilGenX Tech Logotype

    MilGenX Tech

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    20% Web Development
    10% Advertising
    10% Branding +7
    10% Direct Marketing
    10% E-Commerce Development
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design
    5% API Development
    5% Business Consulting

    Focus Areas

    10% JavaScript
    15% SQL
    15% Swift +10
    10% Other programming & scripting languages
    10% PHP
    5% AJAX
    5% Ember.js
    5% HTML5
    5% Kotlin
    5% Objective C
    5% Redux
    5% Typescript
    5% jquery

    Website development firm MilGenX Tech was launched in 2018. The company specializes in Web Development and Advertising.

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  • Maxxeom Digital Solutions Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9
    Ahmedabad, India

    Services provided

    20% Web Development
    20% Branding
    20% Digital Strategy +2
    20% Graphic Design
    20% Web Design

    Focus Areas

    10% JavaScript
    35% HTML5
    20% PHP +4
    15% jquery
    10% SQL
    5% AJAX
    5% XML

    Maxxeom Digital Solutions is a branding agency. Founded in 2021, the team specializes in Branding and Digital Strategy.

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  • Bismi Information Technology Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    2 - 9
    Dubai, United Arab Emirates

    Services provided

    20% Web Development
    35% CRM Consulting and SI
    20% Funding & Investment +2
    15% Blockchain
    10% Digital Asset Management

    Focus Areas

    10% JavaScript
    30% SQL
    20% Other programming & scripting languages +2
    20% PHP
    20% Python

    Bismi Information Technology is a CRM consulting and SI company. The Dubai, United Arab Emirates-based firm offers CRM consulting and SI and Web Development.

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  • DIGITVILLA LLP Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Ranchi, India

    Services provided

    20% Web Development
    20% API Development
    20% Branding +2
    20% Custom Software Development
    20% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP.NET +7
    10% C#
    10% HTML5
    10% Java
    10% PHP
    10% Python
    10% SQL
    10% jquery

    DIGITVILLA LLP is a Ranchi, India-based branding agency. Their services include Branding and Web Design.

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  • Straton Ally Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9
    Karachi, Pakistan

    Services provided

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

    Focus Areas

    10% JavaScript
    15% Kotlin
    15% PHP +4
    15% Python
    15% Ruby
    15% SQL
    15% Swift

    Content Marketing company Straton Ally was founded in 2024. The team focuses on Content Marketing and Search Engine Optimization.

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  • Cinetavisual Studio Logotype

    Cinetavisual Studio

    Not yet reviewed

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

    Services provided

    20% Web Development
    25% Advertising
    20% Digital Strategy +3
    15% Media Planning & Buying
    10% Branding
    10% Marketing Strategy

    Focus Areas

    10% JavaScript
    35% Python
    30% Visual Basic +1
    25% Kotlin

    Cinetavisual Studio is an Advertising company founded in 2015. Their team specializes in Advertising and Digital Strategy.

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  • IOTiva Innovation LLP Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    60% Custom Software Development
    10% Application Management & Support +2
    10% E-Commerce Development
    10% Mobile App Development

    Focus Areas

    20% JavaScript
    45% Python
    15% SQL +2
    10% HTML5
    10% Redux

    IOTiva Innovation LLP is a software development company. Their small team of employees is in Surat, India. Their team specializes in Custom Software Development and Web Development.

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  • Black Media Logotype

    Black Media

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +2
    20% IT Staff Augmentation
    20% Mobile App Development

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP.NET +7
    10% C#
    10% Java
    10% Kotlin
    10% SQL
    10% Swift
    10% Typescript
    10% jquery

    Black Media is a Morelia, Mexico-based IT staff augmentation company. Established in 2020, the team provides IT staff augmentation and Custom Software Development.

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  • Lumo Lab Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    2 - 9
    Zabok, Croatia

    Services provided

    15% Web Development
    15% Mobile App Development
    10% AI Development +6
    10% Application Testing
    10% DevOps Managed Services
    10% IT Strategy Consulting
    10% IoT Development
    10% Product Design
    10% UX/UI Design

    Focus Areas

    15% JavaScript
    15% C++
    15% Go +4
    15% Kotlin
    15% Swift
    15% Typescript
    10% Python

    Established in 2022, Lumo Lab is a web development firm. The team provides Web Development and Mobile App Development and is headquartered in Zabok, Croatia.

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  • Avishkruti Solutions Logotype

    Avishkruti Solutions

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% CRM Consulting and SI
    20% Custom Software Development +2
    20% IT Managed Services
    20% UX/UI Design

    Focus Areas

    10% JavaScript
    50% Python
    20% Kotlin +1
    20% Swift

    Avishkruti Solutions is an UX design company headquartered in Ahmedabad, India. Established in 2024, the team specializes in UX/UI Design and CRM consulting and SI.

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  • GoogolUp Studio Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    Benin City, Nigeria

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Ecommerce Marketing +2
    20% Search Engine Optimization
    20% UX/UI Design

    Focus Areas

    10% JavaScript
    65% PHP
    25% Python

    GoogolUp Studio is a SEO services firm. They are based in SAN FRANCISCO, California and Benin City, Nigeria. Their team focuses on Search Engine Optimization and UX/UI Design.

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  • Gray Coyote Digital Logotype

    Gray Coyote Digital

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Search Engine Optimization
    20% UX/UI Design +4
    10% Branding
    10% Generative AI
    10% Graphic Design
    10% Web Design

    Focus Areas

    10% JavaScript
    25% HTML5
    20% Other programming & scripting languages +3
    20% PHP
    15% jquery
    10% SQL

    Gray Coyote Digital, a SEO agency, is in Spring, Texas. Established in 2024, the team specializes in Search Engine Optimization and UX/UI Design.

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  • Tech We Aah Logotype

    Tech We Aah

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% API Development
    20% Custom Software Development +2
    20% Mobile App Development
    20% Robotics Process Automation

    Focus Areas

    10% JavaScript
    20% Python
    20% SQL +5
    10% ASP.NET
    10% C#
    10% HTML5
    10% Objective C
    10% Typescript

    Software development firm Tech We Aah specializes in Custom Software Development and Web Development. They are located in Johannesburg, South Africa.

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  • The Bode Development Group Logotype

    The Bode Development Group

    Not yet reviewed

    Undisclosed
    $50 - $99 / hr
    2 - 9

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% Content Marketing +2
    20% Custom Software Development
    20% E-Commerce Development

    Focus Areas

    10% JavaScript
    20% Kotlin
    10% C +6
    10% C#
    10% C++
    10% HTML5
    10% Java
    10% Python
    10% Swift

    The Bode Development Group is a small Annapolis, Maryland-based Content Marketing company. The team provides Content Marketing and cloud consulting & SI.

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  • DevIgnite Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    2 - 9
    Sandton, South Africa

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Mobile App Development +2
    20% Search Engine Optimization
    20% UX/UI Design

    Focus Areas

    10% JavaScript
    20% HTML5
    10% ASP.NET +6
    10% C#
    10% Java
    10% Kotlin
    10% Other programming & scripting languages
    10% Python
    10% XML

    Founded in 2025, DevIgnite is a small SEO services firm. Their team provides Search Engine Optimization and UX/UI Design.

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  • Coradini Design Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    2 - 9
    Vargem Alta, Brazil

    Services provided

    20% Web Development
    20% AR/VR Development
    20% Graphic Design +2
    20% UX/UI Design
    20% Web Design

    Focus Areas

    10% JavaScript
    30% Swift
    20% PHP +4
    10% C#
    10% HTML5
    10% Typescript
    10% jquery

    Coradini Design is a web design company. Founded in 2010, the agency is in Vargem Alta, Brazil. Their team provides Web Design and UX/UI Design.

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  • Stacklance Technologies Logotype

    Stacklance Technologies

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% Custom Software Development +2
    20% Digital Strategy
    20% UX/UI Design

    Focus Areas

    10% JavaScript
    20% PHP
    20% Python +4
    15% HTML5
    15% Kotlin
    10% Java
    10% Swift

    Stacklance Technologies is a Digital Strategy company. The Surat, India-based team focuses on Digital Strategy and UX/UI Design.

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  • TechEunovate Logotype

    TechEunovate

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    20% Web Development
    20% API Development
    20% Application Management & Support +2
    20% CRM Consulting and SI
    20% Custom Software Development

    Focus Areas

    10% JavaScript
    15% C#
    14% ASP.NET +7
    14% C++
    14% Typescript
    10% SQL
    10% jquery
    7% HTML5
    3% AJAX
    3% Other programming & scripting languages

    CRM consulting and SI company TechEunovate is located in Rajkot, India. They provide CRM consulting and SI and Custom Software Development.

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  • Stratify Holdings, Inc. Logotype

    Stratify Holdings, Inc.

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Application Testing
    20% BI & Big Data Consulting & SI +2
    20% Custom Software Development
    20% Mobile App Development

    Focus Areas

    10% JavaScript
    20% C++
    20% Java +5
    10% C#
    10% HTML5
    10% Kotlin
    10% PHP
    10% Swift

    Stratify Holdings, Inc., a data analytics company, was established in 2024. The team specializes in BI & big data consulting & SI and Custom Software Development.

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  • TechTrise Solutions Logotype

    TechTrise Solutions

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% ERP Consulting and SI +2
    20% Mobile App Development
    20% UX/UI Design

    Focus Areas

    10% JavaScript
    20% Kotlin
    20% Redux +4
    20% Swift
    10% Go
    10% Python
    10% Typescript

    TechTrise Solutions is a small UX design agency. They focus on UX/UI Design and ERP consulting and SI and were launched in 2025.

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  • Timely Coders Ltd. Logotype

    Timely Coders Ltd.

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Graphic Design +2
    20% Mobile App Development
    20% Search Engine Optimization

    Focus Areas

    10% JavaScript
    10% C#
    10% C++ +7
    10% HTML5
    10% Kotlin
    10% PHP
    10% Python
    10% Ruby
    10% SQL
    10% jquery

    Timely Coders Ltd. Is a Torrance, California-based SEO agency. They specialize in Search Engine Optimization and Graphic Design.

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  • VamiTech Solutions Logotype

    VamiTech Solutions

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    20% HTML5
    20% Java +5
    10% Kotlin
    10% Objective C
    10% PHP
    10% Python
    10% Swift

    Launched in 2023, VamiTech Solutions is an user experience company. The team focuses on UX/UI Design and Web Development.

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  • ManoWorks Studio Logotype

    ManoWorks Studio

    Not yet reviewed

    Undisclosed
    $100 - $149 / hr
    2 - 9

    Services provided

    10% Web Development
    10% AI Consulting
    10% AI Development +7
    10% API Development
    10% Computer Engineering
    10% Custom Software Development
    10% E-Commerce Development
    10% IT Managed Services
    10% Microservices Architecture Services
    10% Mobile App Development

    Focus Areas

    20% JavaScript
    20% Python
    20% Ruby +2
    20% SQL
    20% jquery

    ManoWorks Studio, an IT managed services company, was launched in 2025. The small team specializes in IT managed services and Custom Software Development.

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  • Novial Technologies Logotype

    Novial Technologies

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    50% Python
    15% HTML5 +2
    15% PHP
    10% jquery

    Based in Ahmedabad, India, Novial Technologies is a small web design agency. The team offers Web Design and UX/UI Design.

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  • MDS SOFTWARE SOLUTIONS GROUP sp. z o.o. Logotype

    MDS SOFTWARE SOLUTIONS GROUP sp. z o.o.

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    30% ASP.NET
    20% C# +4
    10% HTML5
    10% SQL
    10% Typescript
    10% XML

    Founded in 2024, MDS SOFTWARE SOLUTIONS GROUP sp. Z o.o. Is a web design company. Their services include Web Design and UX/UI Design.

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  • Chippy Digital Logotype

    Not yet reviewed

    Undisclosed
    $100 - $149 / hr
    2 - 9
    Irlam, England

    Services provided

    20% Web Development
    50% IT Strategy Consulting
    30% Custom Software Development

    Focus Areas

    10% JavaScript
    20% Other programming & scripting languages
    10% C# +6
    10% C++
    10% Java
    10% PHP
    10% Rust
    10% backbone.js
    10% jquery

    Chippy Digital, an IT strategy consulting company, focuses on IT strategy consulting and Custom Software Development. The agency is based in Irlam, England.

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  • Easy Dev Logotype

    Easy Dev

    Not yet reviewed

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

    Services provided

    15% Web Development
    20% E-Commerce Development
    15% UX/UI Design +5
    10% Application Testing
    10% Logo
    10% Mobile App Development
    10% Search Engine Optimization
    10% Web Design

    Focus Areas

    15% JavaScript
    25% Typescript
    10% HTML5 +5
    10% Kotlin
    10% PHP
    10% Python
    10% SQL
    10% Swift

    Established in 2024, Easy Dev is an e-commerce development firm. The small team provides E-Commerce Development and UX/UI Design.

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  • Semantic Technology Logotype

    Semantic Technology

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +2
    20% ERP Consulting and SI
    20% IT Managed Services

    Focus Areas

    10% JavaScript
    15% Java
    10% AJAX +7
    10% HTML5
    10% Kotlin
    10% Python
    10% Redux
    10% SQL
    10% jquery
    5% Go

    ERP consulting and SI company Semantic Technology is located in Kathmandu, Nepal. They focus on ERP consulting and SI and IT managed services.

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  • Musebit Logotype

    Musebit

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Branding
    20% Custom Software Development +2
    20% UX/UI Design
    20% Web Design

    Focus Areas

    10% JavaScript
    10% C++
    10% Ember.js +7
    10% Kotlin
    10% Other programming & scripting languages
    10% Python
    10% Ruby
    10% SQL
    10% Swift
    10% Typescript

    Branding agency Musebit provides Branding and Web Design. They are located in Pune, India.

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  • Mustang Teams Logotype

    Mustang Teams

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9

    Services provided

    20% Web Development
    20% Custom Software Development
    20% IT Managed Services +2
    20% Mobile App Development
    20% UX/UI Design

    Focus Areas

    10% JavaScript
    20% Kotlin
    20% Python +5
    10% HTML5
    10% Java
    10% PHP
    10% Swift
    10% Typescript

    Mustang Teams is an UX design company. They were launched in 2025, and their services include UX/UI Design and IT managed services.

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  • NCRYPTICS Logotype

    NCRYPTICS

    Not yet reviewed

    $25,000+
    $25 - $49 / hr
    2 - 9

    Services provided

    10% Web Development
    40% Custom Software Development
    20% API Development +2
    20% Application Testing
    10% Mobile App Development

    Focus Areas

    20% JavaScript
    80% Python

    NCRYPTICS is a custom software development firm. The team specializes in Custom Software Development and Application Testing, and the firm is in Prnjavor, Bosnia and Herzegovina.

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  • Icon Tech Studio Logotype

    Icon Tech Studio

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9

    Services provided

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

    Focus Areas

    10% JavaScript
    20% Other programming & scripting languages
    15% PHP +6
    15% Python
    15% SQL
    10% ASP.NET
    5% Kotlin
    5% Swift
    5% Typescript

    Small software development firm Icon Tech Studio, is in Ahmedabad, India. The team specializes in Custom Software Development and Web Development.

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  • WIK Technologies Logotype

    WIK Technologies

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    2 - 9

    Services provided

    20% Web Development
    20% AI Consulting
    20% Custom Software Development +2
    20% IT Strategy Consulting
    20% UX/UI Design

    Focus Areas

    10% JavaScript
    45% Python
    20% PHP +2
    20% SQL
    5% Visual Basic

    WIK Technologies is an user experience agency founded in 2025. The team focuses on UX/UI Design and IT strategy consulting and is located in Nairobi, Kenya.

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  • FiniteZen Logotype

    FiniteZen

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% API Development
    20% Custom Software Development +2
    20% DevOps Managed Services
    20% Mobile App Development

    Focus Areas

    10% JavaScript
    35% Java
    20% HTML5 +3
    20% Typescript
    10% AJAX
    5% jquery

    FiniteZen is a software development firm. The Mumbai, India-based team provides Custom Software Development and Web Development.

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  • Bhagwati InfoTech Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    10% Kotlin
    10% PHP +11
    10% Python
    10% Redux
    10% SQL
    5% AJAX
    5% ASP.NET
    5% Ember.js
    5% HTML5
    5% Objective C
    5% Other programming & scripting languages
    5% Typescript
    5% jquery

    Bhagwati InfoTech is a small Rajkot, India-based web design company. Their services include Web Design and UX/UI Design.

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  • Fikto Logotype

    Fikto

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% AI Development
    20% Custom Software Development +2
    20% Mobile App Development
    20% UX/UI Design

    Focus Areas

    10% JavaScript
    10% C
    10% C# +8
    10% HTML5
    10% Java
    10% Other programming & scripting languages
    10% Python
    10% SQL
    10% Visual Basic
    9% Typescript
    1% jquery

    Headquartered in Lisbon, Portugal, Fikto is a small user experience design company. The team provides UX/UI Design and Custom Software Development.

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  • Wheeling Software Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    Wheeling, IL

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% Custom Software Development +2
    20% DevOps Managed Services
    20% Mobile App Development

    Focus Areas

    10% JavaScript
    20% C#
    20% SQL +5
    10% ASP.NET
    10% HTML5
    10% Python
    10% Ruby
    10% Typescript

    Founded in 2025, Wheeling Software is a cloud consulting & SI company. Their services include cloud consulting & SI and Custom Software Development.

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  • Xenoautolabs LLP Logotype

    Xenoautolabs LLP

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    2 - 9

    Services provided

    10% Web Development
    25% API Development
    20% Custom Software Development +5
    15% E-Commerce Development
    10% Microservices Architecture Services
    10% Mobile App Development
    5% AI Consulting
    5% AI Development

    Focus Areas

    20% JavaScript
    50% Python
    20% SQL +1
    10% Typescript

    Xenoautolabs LLP is an API Development company. Their team is based in Greater Noida, India and provides API Development and Custom Software Development.

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  • Farland Technology GmbH Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9
    Schmiedrued, Switzerland

    Services provided

    20% Web Development
    30% Custom Software Development
    25% AI Development +3
    15% Generative AI
    5% DevOps Managed Services
    5% Mobile App Development

    Focus Areas

    10% JavaScript
    25% Other programming & scripting languages
    25% PHP +3
    20% Typescript
    10% C#
    10% HTML5

    Founded in 2021, Farland Technology GmbH is a software development firm. The team offers Custom Software Development and Artificial Intelligence.

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  • JDPC Global Logotype

    JDPC Global

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% AI Development
    20% Custom Software Development +3
    20% Mobile App Development
    10% DevOps Managed Services
    10% Search Engine Optimization

    Focus Areas

    10% JavaScript
    20% ASP.NET
    15% SQL +7
    10% C#
    10% HTML5
    10% PHP
    10% Typescript
    5% AJAX
    5% Swift
    5% jquery

    JDPC Global is a software development company. They are located in Jaipur, India and have small team. They focus on Custom Software Development and Web Development.

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  • AnuSol Technologies Logotype

    AnuSol Technologies

    Not yet reviewed

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

    Services provided

    20% Web Development
    30% Custom Software Development
    20% E-Commerce Development +3
    10% AI Development
    10% Application Testing
    10% DevOps Managed Services

    Focus Areas

    10% JavaScript
    30% Python
    25% Typescript +2
    20% Java
    15% SQL

    AnuSol Technologies, a software development company, focuses on Custom Software Development and E-Commerce Development. The company is based in Berlin, Germany.

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  • 101 Keys Inc. Logotype

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

    Services provided

    10% Web Development
    35% Web Design
    20% Pay Per Click +3
    20% Search Engine Optimization
    10% E-Commerce Development
    5% Logo

    Focus Areas

    10% JavaScript
    35% PHP
    30% HTML5 +3
    10% SQL
    10% XML
    5% AJAX

    101 Keys is a full-service digital marketing company. We serve businesses of all sizes across Canada and the US. Whether you run a small shop, large franchise or non-profit organization, we bring

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  • GeekSpoc IT Services Logotype

    4.5 1 review
    Undisclosed
    < $25 / hr
    2 - 9
    Bengaluru, India

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +7
    10% ERP Consulting and SI
    10% IT Managed Services
    10% IoT Development
    10% Mobile App Development
    10% Other Application Development
    10% Search Engine Optimization
    10% Web Design

    Focus Areas

    10% JavaScript
    10% HTML5
    10% Java +7
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% Ruby
    10% SQL
    10% Swift
    10% jquery

    GeekSpoc IT Services – Your Trusted IT Solutions Partner GeekSpoc IT Services is a dynamic and results-driven technology solutions provider specializing in IT consulting, recruitment, software

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  • Lanka Designer Solutions (Pvt) Ltd Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9
    Sri Jayawardenepura Kotte, Sri Lanka

    Services provided

    10% Web Development
    20% Web Design
    10% Custom Software Development +19
    10% E-Commerce Development
    7% Video Production
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design
    3% Email Marketing
    3% Mobile & App Marketing
    3% Mobile App Development
    2% Content Marketing
    2% Conversion Optimization
    2% Digital Strategy
    2% IT Strategy Consulting
    2% Logo
    2% Other Design
    2% Packaging Design
    2% Print Design
    1% Broadcast Video
    1% Other Digital Marketing
    1% Pay Per Click

    Focus Areas

    10% JavaScript
    25% PHP
    10% AJAX +9
    10% Java
    10% SQL
    5% C
    5% C#
    5% C++
    5% Other programming & scripting languages
    5% Perl
    5% Visual Basic
    5% XML

    Lanka Designer Solutions (Pvt) Ltd is a small web design company. Founded in 2012, the team provides Web Design and Custom Software Development.

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  • Clicky, Software Development Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    2 - 9
    Ciudad de México, Mexico

    Services provided

    10% Web Development
    10% Business Consulting
    10% Custom Software Development +7
    10% Graphic Design
    10% Logo
    10% Mobile App Development
    10% UX/UI Design
    10% Video Production
    10% Wearable App Development
    10% Web Design

    Focus Areas

    10% JavaScript
    10% Java
    10% Objective C +7
    10% PHP
    10% Perl
    10% Python
    10% Ruby
    10% SQL
    10% Swift
    10% XML

    Software development company Clicky, Software Development is located in Ciudad de México, Mexico. The team offers Custom Software Development and UX/UI Design.

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  • Velectico Consulting Private Limited Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Custom Software Development
    10% Application Management & Support +6
    10% Business Consulting
    10% E-Commerce Development
    10% IT Managed Services
    10% IT Staff Augmentation
    10% IT Strategy Consulting
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    20% C#
    20% Java +4
    20% PHP
    10% ASP.NET
    10% SQL
    10% Visual Basic

    Small software development company Velectico Consulting Private Limited, is based in Kolkata, India. Their services include Custom Software Development and Application Management & Support.

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At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.

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.

Using this unique combination of verified client feedback and provider-supplied insights, Clutch distills the most important details into clear, digestible summaries so you have everything you need to make confident, informed decisions quickly.

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Clutch’s commitment to transparency is ongoing. We’re constantly refining our systems to protect the integrity of reviews and support you in finding the right agency.

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 HTMLPanda

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. 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
  16. 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
  17. 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
  19. 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
  20. Brainium Information Technologies Logotype

    Brainium Information Technologies

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

    Ability to deliver

    36.3/40.0
    19/20 Reviews
    9/10 Clients & Experience
    8.4/10 Market Presence

    Service focus

    35% Web Development
    30% JavaScript
    65% 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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