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Top JavaScript Developers

JavaScript powers everything from interactive websites to complex enterprise applications. Partnering with an experienced JavaScript development agency ensures your product is fast, secure, and ready to scale. Clutch makes it easy to find trusted providers by publishing in-depth, verified client reviews and transparent performance data. Use our filters to sort agencies by budget, location, framework expertise, and more. Looking for regional specialists? Browse firms in the United States, United Kingdom, or Canada to compare portfolios and pricing in your market. Start exploring today and shortlist partners that align with your goals.
Ratings Updated: May 18, 2026
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15 Leaders 15 Contenders

22,060 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Featured

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    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

    4.9 89 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

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

    Focus Areas

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

    Digis, a Fiverr company (NYSE: FVRR), is a web development firm specializing in full-stack and custom website development. Reviews consistently highlight their exceptional project management, technical expertise, and strong communication skills. Approximately 90% of reviewers commend their proactive and reliable service, resulting in improved project delivery times and increased user satisfaction across various web applications.

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  • Resourcology Inc. Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    50 - 249
    Toronto, Canada

    Services provided

    20% Web Development
    20% Custom Software Development
    12% Mobile App Development +10
    10% E-Commerce Development
    10% UX/UI Design
    5% Graphic Design
    5% Search Engine Optimization
    5% Social Media Marketing
    5% Web Design
    3% Email Marketing
    2% Content Marketing
    2% Logo
    1% Mobile & App Marketing

    Focus Areas

    15% JavaScript
    40% PHP
    15% SQL +8
    5% ASP.NET
    5% Java
    5% Python
    5% Ruby
    3% Perl
    3% Visual Basic
    2% Redux
    2% Swift

    Resourcology Inc. Is a Toronto, Canada-based software development firm. They offer Custom Software Development and Web Development.

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  • ABC XYZ Logotype

    ABC XYZ

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% E-Commerce Development
    25% Mobile App Development +2
    15% Web Design
    10% AR/VR Development

    Focus Areas

    12% JavaScript
    23% Java
    11% Kotlin +5
    11% PHP
    11% Python
    11% Swift
    11% Typescript
    10% SQL

    Founded in 2005, ABC XYZ, a small e-commerce development firm, is located in abc xyz, Andorra. Their services include E-Commerce Development and Mobile App Development.

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  • vbyte tech services Logotype

    Not yet reviewed

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

    Services provided

    12% Web Development
    20% Web Design
    10% Application Management & Support +9
    10% Cloud Consulting & SI
    10% Email Marketing
    10% Low/No Code Development
    8% E-Commerce Development
    5% Affiliate Marketing
    5% Social Media Marketing
    5% UX/UI Design
    3% CRM Consulting and SI
    2% Logo

    Focus Areas

    10% JavaScript
    30% PHP
    20% HTML5 +6
    20% SQL
    5% Other programming & scripting languages
    5% XML
    5% jquery
    3% AJAX
    2% backbone.js

    Vbyte tech services is a web design agency. They focus on Web Design and Web Development and were launched in 2021.

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  • Datart Infotech Logotype

    Not yet reviewed

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

    Services provided

    12% Web Development
    19% Custom Software Development
    15% E-Commerce Development +5
    12% IoT Development
    12% Mobile App Development
    10% IT Strategy Consulting
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    25% Ember.js
    10% Other programming & scripting languages +6
    10% PHP
    10% Python
    10% Ruby
    10% SQL
    10% Swift
    5% Java

    Established in 2023, Datart Infotech is a software development company. The team focuses on Custom Software Development and E-Commerce Development.

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  • EJaw Games Logotype

    4.8 13 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249
    Kyiv, Ukraine

    Services provided

    15% Web Development
    50% Blockchain
    25% Mobile App Development +1
    10% AR/VR Development

    Focus Areas

    33% JavaScript
    34% C#
    33% Python

    EJaw Games is a versatile digital solutions company known for its expertise in game development and web application development. With a focus on delivering projects on time and within budget, 75% of reviewers commend their seamless integration of creativity and technical skills, while 25% suggest improvements in communication and expectations. Their commitment to addressing client needs is frequently highlighted.

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  • Micael Roche Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    Freelancer
    Westmead, Australia

    Services provided

    10% Web Development
    30% Pay Per Click
    20% Conversion Optimization +4
    15% Marketing Strategy
    10% Graphic Design
    10% Web Design
    5% UX/UI Design

    Focus Areas

    15% JavaScript
    15% C#
    15% HTML5 +6
    15% PHP
    15% SQL
    10% Python
    5% Kotlin
    5% Typescript
    5% XML

    Established in 2022, Micael Roche is a small Westmead, Australia-based PPC company. Their services include Pay Per Click and Conversion Optimization.

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  • Freelance Developer India Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    Freelancer
    North Dumdum, India

    Services provided

    10% Web Development
    10% AI Development
    10% E-Commerce Development +7
    10% Email Marketing
    10% Graphic Design
    10% Logo
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    15% JavaScript
    35% PHP
    20% SQL +2
    20% jquery
    10% AJAX

    Freelance Developer India is a small social media marketing company established in 2024. Their team focuses on Social Media Marketing and Email Marketing.

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  • Cryptical Coders Logotype

    Cryptical Coders

    Not yet reviewed

    $1,000+
    < $25 / hr
    Freelancer

    Services provided

    10% Web Development
    20% Application Testing
    20% E-Commerce Development +3
    20% Mobile App Development
    20% Search Engine Optimization
    10% Low/No Code Development

    Focus Areas

    15% JavaScript
    65% PHP
    10% AJAX +1
    10% HTML5

    Cryptical Coders is a web development firm established in 2018. The team specializes in Web Development and Search Engine Optimization and is headquartered in London, England.

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  • Virtuinformatics - Out of Business Logotype

    5.0 1 review
    Undisclosed
    $25 - $49 / hr
    2 - 9
    Attock, Pakistan

    Services provided

    35% Web Development
    35% Mobile App Development
    10% Web Design +3
    7% Logo
    7% UX/UI Design
    6% Call Center Services

    Focus Areas

    32% JavaScript
    33% PHP
    20% AJAX +1
    15% SQL

    Virtuinformatics - Out of Business was a web development company specializing in PHP website development and coding services. Overall feedback was overwhelmingly positive, with 100% of reviewers highlighting their exceptional code quality and attention to detail. Clients appreciated their ability to deliver precise outcomes, underscoring their expertise in custom website development and web programming.

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  • Everon lab Logotype

    Everon lab

    5.0 1 review
    Undisclosed
    $25 - $49 / hr
    2 - 9

    Services provided

    10% Web Development
    30% E-Commerce Development
    25% Custom Software Development +7
    5% AI Consulting
    5% AI Development
    5% CRM Consulting and SI
    5% ERP Consulting and SI
    5% Ecommerce Marketing
    5% IT Strategy Consulting
    5% Mobile App Development

    Focus Areas

    15% JavaScript
    30% C#
    10% Java +6
    10% PHP
    10% Python
    10% SQL
    5% AJAX
    5% ASP.NET
    5% Other programming & scripting languages

    At Everon Lab, we believe great ecommerce never sleeps. We are a Surat-based software and ecommerce solutions company founded in 2025, built for businesses that are serious about growing online.

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  • KEVINDJ Creatives Logotype

    KEVINDJ Creatives

    4.5 1 review
    $1,000+
    < $25 / hr
    2 - 9

    Services provided

    10% Web Development
    30% Graphic Design
    30% Web Design +4
    10% E-Commerce Development
    10% Low/No Code Development
    5% Custom Software Development
    5% Mobile App Development

    Focus Areas

    15% JavaScript
    15% HTML5
    15% PHP +9
    10% Java
    10% SQL
    5% AJAX
    5% ASP.NET
    5% C#
    5% Go
    5% Kotlin
    5% Other programming & scripting languages
    5% jquery

    KEVINDJ Creatives specializes in website and graphic design services. Clients have praised their impressive communication skills and ability to deliver comprehensive design solutions, noting the high value for cost. While their creativity is commendable, some clients suggest improvements in time management and balancing creativity levels to better suit various audiences.

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  • Andro Buddy Technologies Pvt. Ltd. Logotype

    Andro Buddy Technologies Pvt. Ltd.

    5.0 1 review
    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    15% Web Development
    15% Mobile App Development
    10% Corporate Law +14
    10% E-Commerce Development
    5% AI Development
    5% Application Management & Support
    5% Blockchain
    5% Custom Software Development
    5% Generative AI
    5% IT Managed Services
    5% Internet & Technology Law
    5% Search Engine Optimization
    5% Tax Law
    2% IT Strategy Consulting
    1% Blockchain Marketing
    1% Email Marketing
    1% Social Media Marketing

    Focus Areas

    10% JavaScript
    15% SQL
    10% HTML5 +8
    10% Java
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% XML
    5% ASP.NET
    5% C#
    5% jquery

    Andro Buddy Technologies Pvt. Ltd. specializes in Website Development and Web Design, delivering high-quality and cost-effective solutions. Feedback highlights their reliable project management and alignment with client values. Clients appreciate their timely delivery and effective communication through virtual and in-person meetings.

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  • Flabber Technology and Services Logotype

    Flabber Technology and Services

    Not yet reviewed

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

    Services provided

    15% Web Development
    20% Enterprise App Modernization
    15% Custom Software Development +4
    15% E-Commerce Development
    15% Mobile App Development
    10% AI Development
    10% Application Management & Support

    Focus Areas

    10% JavaScript
    10% AJAX
    10% Ember.js +7
    10% Java
    10% Kotlin
    10% PHP
    10% Python
    10% Redux
    10% SQL
    10% Swift

    Launched in 2017, Flabber Technology and Services is an Enterprise App Modernization company. The team focuses on Enterprise App Modernization and Custom Software Development.

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  • Acemero Technologies Pvt.Ltd Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Ramanattukara, India

    Services provided

    15% Web Development
    10% Custom Software Development
    10% E-Commerce Development +10
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design
    5% Affiliate Marketing
    5% Blockchain
    5% Branding
    5% Email Marketing
    5% Graphic Design
    5% Logo
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    20% PHP
    10% AJAX +8
    10% Java
    10% Python
    10% SQL
    10% XML
    5% ASP
    5% C
    5% C#
    5% C++

    Acemero Technologies Pvt.Ltd is a web development firm headquartered in Ramanattukara, India. They provide Web Development and Custom Software Development.

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  • Python Dev Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    30% Custom Software Development
    15% IT Staff Augmentation +4
    10% Application Management & Support
    10% E-Commerce Development
    10% Mobile App Development
    10% Web Design

    Focus Areas

    10% JavaScript
    25% Python
    10% AJAX +7
    10% C#
    10% Kotlin
    10% PHP
    10% SQL
    5% ASP
    5% ASP.NET
    5% Visual Basic

    Launched in 2013, Python Dev is a software development firm. The team specializes in Custom Software Development and IT staff augmentation and is based in Ahmedabad, India.

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  • iistech Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    30% Mobile App Development
    15% IoT Development +4
    15% Low/No Code Development
    10% Custom Software Development
    8% IT Strategy Consulting
    7% Application Management & Support

    Focus Areas

    10% JavaScript
    30% Java
    30% Swift +3
    15% PHP
    10% SQL
    5% Python

    Headquartered in Ilerin, Nigeria, iistech is a mobile app development company. Their services include Mobile App Development and Web Development.

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  • Oasis Private Limted Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    South Croydon, England

    Services provided

    10% Web Development
    30% Custom Software Development
    10% AI Development +7
    10% BI & Big Data Consulting & SI
    10% Cloud Consulting & SI
    10% IoT Development
    5% Architectural Design
    5% Cybersecurity
    5% Mobile App Development
    5% Web Design

    Focus Areas

    15% JavaScript
    10% C
    10% C# +8
    10% C++
    10% Go
    10% Java
    10% Typescript
    10% XML
    5% Kotlin
    5% Other programming & scripting languages
    5% Python

    Oasis Private Limted is a software development company established in 2022. Their team offers Custom Software Development and BI & big data consulting & SI.

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  • AiCoderz Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% AI Development
    15% Application Testing +5
    15% E-Commerce Development
    15% Robotics Process Automation
    10% Low/No Code Development
    10% Mobile App Development
    10% Product Design

    Focus Areas

    15% JavaScript
    40% Visual Basic
    25% SQL +1
    20% PHP

    AiCoderz is a small website development company established in 2022. Their team specializes in Web Development and Mobile App Development.

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  • Orient8 Digital Marketing Agency Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    50% Search Engine Optimization
    15% Content Marketing +5
    5% E-Commerce Development
    5% Logo
    5% Pay Per Click
    5% Social Media Marketing
    5% Web Design

    Focus Areas

    15% JavaScript
    50% PHP
    10% C# +4
    10% Java
    5% Python
    5% SQL
    5% Swift

    Founded in 2022, Orient8 Digital Marketing Agency is a SEO company. Their services include Search Engine Optimization and Content Marketing.

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  • AppsBrew Logotype

    AppsBrew

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    10% Web Development
    40% Mobile App Development
    10% Application Testing +4
    10% Custom Software Development
    10% E-Commerce Development
    10% Low/No Code Development
    10% Web Design

    Focus Areas

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

    Launched in 2022, AppsBrew is an app development firm. Their services include Mobile App Development and Web Design.

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  • Realtyflow Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Calgary, Canada

    Services provided

    15% Web Development
    40% Corporate Photography
    25% Video Production +2
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    10% JavaScript
    60% PHP
    20% HTML5 +1
    10% AJAX

    Realtyflow is a small Calgary, Canada-based Corporate Photography company. The team focuses on Corporate Photography and Video Production.

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  • Ftech Digital Logotype

    Ftech Digital

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% IT Managed Services
    25% IT Strategy Consulting +2
    25% UX/UI Design
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    60% HTML5
    10% AJAX +2
    10% PHP
    10% SQL

    Ftech Digital is a small Mumbai, India-based user experience company. Their services include UX/UI Design and IT strategy consulting.

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  • Sudoserv Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    Cape Town, South Africa

    Services provided

    10% Web Development
    20% Conversion Optimization
    20% Social Media Marketing +4
    15% Pay Per Click
    15% Search Engine Optimization
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    15% JavaScript
    60% PHP
    15% Go +1
    10% Python

    Sudoserv is a social media marketing agency. The firm is located in Cape Town, South Africa. Their services include Social Media Marketing and Conversion Optimization.

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  • Brain Fusion Logotype

    Brain Fusion

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Graphic Design
    20% Interior Design +3
    20% Mobile App Development
    20% Print Design
    10% Low/No Code Development

    Focus Areas

    15% JavaScript
    25% Ember.js
    20% C++ +3
    15% Python
    15% Redux
    10% Java

    Brain Fusion is a graphic design agency founded in 2023. Their services include Graphic Design and Print Design.

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  • Devspherelabs Logotype

    Devspherelabs

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +12
    10% Mobile App Development
    10% Social Media Marketing
    5% Advertising
    5% Application Management & Support
    5% Branding
    5% Ecommerce Marketing
    5% Enterprise App Modernization
    5% Mobile & App Marketing
    5% Product Marketing
    5% Search Engine Optimization
    5% UX/UI Design
    5% Web Design

    Focus Areas

    15% JavaScript
    40% Typescript
    20% HTML5 +2
    15% Redux
    10% Go

    Devspherelabs is a social media marketing company. In New York, New York, the firm was established in 2023. Their services include Social Media Marketing and Custom Software Development.

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  • Rudicon Logotype

    Rudicon

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% Email Marketing
    15% Marketing Strategy +4
    15% Pay Per Click
    15% Search Engine Optimization
    15% Social Media Marketing
    15% UX/UI Design

    Focus Areas

    15% JavaScript
    55% HTML5
    15% PHP +1
    15% SQL

    Rudicon, a Marketing Strategy company, was launched in 2019. Located in Calgary, Canada, the team provides Marketing Strategy and Social Media Marketing.

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  • Mateen Asghar Logotype

    Mateen Asghar

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% AR/VR Development
    20% Branding +3
    20% Mobile App Development
    20% Social Media Marketing
    10% Low/No Code Development

    Focus Areas

    15% JavaScript
    20% Python
    15% PHP +4
    15% SQL
    15% Visual Basic
    10% ASP
    10% ASP.NET

    Mateen Asghar is a branding firm. They offer Branding and Social Media Marketing and were established in 2015. The company is headquartered in Islamabad, Pakistan.

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  • Cubiktech Logotype

    Cubiktech

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Mobile App Development
    15% Custom Software Development +6
    10% AI Development
    10% API Development
    10% DevOps Managed Services
    10% E-Commerce Development
    10% Low/No Code Development
    5% Microservices Architecture Services

    Focus Areas

    15% JavaScript
    15% Kotlin
    15% Redux +5
    15% Typescript
    15% jquery
    10% SQL
    10% backbone.js
    5% PHP

    Cubiktech is a Sanquelim, India-based software development company. Their services include Custom Software Development and Mobile App Development.

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  • CWM-Media LLC Logotype

    CWM-Media LLC

    Not yet reviewed

    $5,000+
    Undisclosed
    2 - 9

    Services provided

    10% Web Development
    10% API Development
    10% Custom Software Development +8
    10% Cybersecurity
    10% E-Commerce Development
    10% IT Managed Services
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design
    5% AI Development
    5% Application Management & Support

    Focus Areas

    15% JavaScript
    20% SQL
    15% HTML5 +6
    15% Java
    10% C++
    10% Python
    5% C#
    5% Ruby
    5% backbone.js

    Launched in 2023, CWM-Media LLC is a small web design agency. Their services include Web Design and UX/UI Design.

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  • NodifyIt Logotype

    NodifyIt

    Not yet reviewed

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

    Services provided

    15% Web Development
    45% IT Staff Augmentation
    25% Custom Software Development +2
    10% IT Strategy Consulting
    5% Mobile App Development

    Focus Areas

    10% JavaScript
    25% SQL
    15% Redux +7
    10% AJAX
    10% PHP
    10% Python
    5% Java
    5% Other programming & scripting languages
    5% Ruby
    5% Typescript

    NodifyIt is a small Casablanca, Morocco-based IT staff augmentation company. Their services include IT staff augmentation and Custom Software Development.

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  • BQ Solutions Ltd Logotype

    BQ Solutions Ltd

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% API Development
    15% Custom Software Development +8
    15% Enterprise App Modernization
    10% Microservices Architecture Services
    5% Application Management & Support
    5% Application Testing
    5% Cloud Consulting & SI
    5% Generative AI
    5% IT Managed Services
    5% Other Application Development

    Focus Areas

    10% JavaScript
    25% C#
    20% SQL +3
    20% Visual Basic
    15% ASP.NET
    10% Java

    BQ Solutions Ltd is a software development firm. The London, England-based agency was established in 2019. Their team focuses on Custom Software Development and Web Development.

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  • Codeciac Logotype

    Codeciac

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    2 - 9

    Services provided

    10% Web Development
    10% Branding
    10% Data Annotation Services +7
    10% Digital Strategy
    10% Graphic Design
    10% Marketing Strategy
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

    15% JavaScript
    25% PHP
    20% jquery +3
    15% AJAX
    15% Python
    10% HTML5

    Codeciac, a branding firm, was established in 2022. The agency specializes in Branding and Marketing Strategy, and is small.

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  • DELPHAR Logotype

    DELPHAR

    Not yet reviewed

    $1,000+
    $200 - $300 / hr
    2 - 9

    Services provided

    15% Web Development
    15% Application Management & Support
    15% Enterprise App Modernization +8
    10% Custom Software Development
    10% Low/No Code Development
    10% Mobile App Development
    5% Business Consulting
    5% E-Commerce Development
    5% Pay Per Click
    5% Search Engine Optimization
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    30% Typescript
    15% Python +4
    15% Rust
    15% Swift
    10% Ruby
    5% Java

    Software development firm DELPHAR was founded in 2019. The small team offers Custom Software Development and Web Development.

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  • Soul Ocean Logotype

    Soul Ocean

    Not yet reviewed

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

    Services provided

    10% Web Development
    45% Custom Software Development
    35% IT Strategy Consulting +1
    10% API Development

    Focus Areas

    15% JavaScript
    50% Python
    30% Typescript +1
    5% Go

    Headquartered in Buenos Aires, Argentina, Soul Ocean is a software development company. Their services include Custom Software Development and IT strategy consulting.

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  • Cator Logotype

    Cator

    Not yet reviewed

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

    Services provided

    10% Web Development
    12% Low/No Code Development
    10% Custom Software Development +14
    10% E-Commerce Development
    10% Mobile App Development
    5% AI Consulting
    5% API Development
    5% Application Testing
    5% Cloud Consulting & SI
    5% Generative AI
    5% IT Staff Augmentation
    5% IT Strategy Consulting
    5% Microservices Architecture Services
    5% Other IT Consulting and SI
    1% AI Development
    1% UX/UI Design
    1% Web Design

    Focus Areas

    15% JavaScript
    15% ASP.NET
    15% C# +6
    15% Typescript
    10% HTML5
    10% Other programming & scripting languages
    10% SQL
    5% Go
    5% Redux

    Cator is a software development company based in Johannesburg, South Africa. Their services include Custom Software Development and Web Development.

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  • ENNEF INFOTECH Logotype

    ENNEF INFOTECH

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9

    Services provided

    10% Web Development
    10% E-Commerce Development
    10% Web Design +17
    6% Graphic Design
    4% Affiliate Marketing
    4% Content Marketing
    4% Conversion Optimization
    4% Custom Software Development
    4% Digital Strategy
    4% Ecommerce Marketing
    4% Email Marketing
    4% IT Managed Services
    4% Logo
    4% Mobile & App Marketing
    4% Mobile App Development
    4% Pay Per Click
    4% SMS Marketing
    4% Search Engine Optimization
    4% Social Media Marketing
    4% Video Marketing

    Focus Areas

    15% JavaScript
    20% PHP
    15% Typescript +5
    10% ASP.NET
    10% HTML5
    10% Kotlin
    10% XML
    10% jquery

    ENNEF INFOTECH is a web design agency. The team focuses on Web Design and Web Development, and the firm is located in Chennai, India.

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  • Cloud Code Hub Logotype

    Cloud Code Hub

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% Branding
    15% Digital Strategy +5
    15% E-Commerce Development
    15% Video Production
    10% Low/No Code Development
    10% Social Media Marketing
    10% UX/UI Design

    Focus Areas

    15% JavaScript
    15% C++
    15% Java +5
    15% PHP
    15% Python
    10% Ember.js
    10% Kotlin
    5% Ruby

    Cloud Code Hub is a branding company. The team is based in Sacramento, California, and their services include Branding and Digital Strategy.

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  • RankRiff Logotype

    RankRiff

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    10% Web Development
    10% Content Writing Services
    10% E-Commerce Development +7
    10% Graphic Design
    10% Logo
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

    15% JavaScript
    45% Other programming & scripting languages
    15% HTML5 +2
    15% SQL
    10% C++

    RankRiff, a social media marketing agency, is located in Lahore, Pakistan and Kingsbridge, England. Their services include Social Media Marketing and Search Engine Optimization.

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  • 99 iT Solutions Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% Mobile App Development +11
    10% Other Digital Marketing
    10% Search Engine Optimization
    10% Web Design
    5% AI Development
    5% DevOps Managed Services
    5% E-Commerce Development
    5% Graphic Design
    5% Logo
    5% Product Design
    5% UX/UI Design
    5% Video Production

    Focus Areas

    15% JavaScript
    20% Java
    20% PHP +3
    15% C
    15% C++
    15% Scala

    99 iT Solutions is a small SEO company headquartered in Karachi, Pakistan. The team offers Search Engine Optimization and Other Digital Marketing.

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  • OriginMaster Logotype

    OriginMaster

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    2 - 9

    Services provided

    10% Web Development
    10% API Development
    10% Application Management & Support +8
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% IT Staff Augmentation
    10% IT Strategy Consulting
    10% Microservices Architecture Services
    10% UX/UI Design
    5% Enterprise App Modernization
    5% Mobile App Development

    Focus Areas

    15% JavaScript
    20% Python
    20% SQL +3
    15% HTML5
    15% Java
    15% Typescript

    Founded in 2023, OriginMaster is an UX design agency. The firm specializes in UX/UI Design and IT strategy consulting, and is small.

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  • Bytearoo Logotype

    Bytearoo

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9

    Services provided

    15% Web Development
    20% API Development
    15% Custom Software Development +5
    15% IT Strategy Consulting
    15% Mobile App Development
    10% E-Commerce Development
    5% Enterprise App Modernization
    5% Other Application Development

    Focus Areas

    10% JavaScript
    25% Java
    25% Python +4
    20% SQL
    10% Typescript
    5% HTML5
    5% PHP

    Bytearoo is an API Development company. The Jaipur, India-based team focuses on API Development and IT strategy consulting.

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  • Root360 Technologies Logotype

    Root360 Technologies

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% Mobile App Development
    10% AI Development +7
    10% Custom Software Development
    10% Cybersecurity
    10% Digital Strategy
    10% IT Strategy Consulting
    10% Low/No Code Development
    10% Web Design
    5% AI Consulting

    Focus Areas

    15% JavaScript
    15% Python
    10% Other programming & scripting languages +10
    10% PHP
    10% Typescript
    9% HTML5
    5% AJAX
    5% ASP.NET
    5% Java
    5% Kotlin
    5% SQL
    5% jquery
    1% XML

    Established in 2020, Root360 Technologies is a custom software development company. The firm provides Custom Software Development and Web Development.

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  • OneTap Studio Logotype

    OneTap Studio

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    15% Web Development
    15% AR/VR Development
    15% Architectural Design +5
    15% Pay Per Click
    15% Search Engine Optimization
    10% Content Marketing
    10% Mobile App Development
    5% Web Design

    Focus Areas

    10% JavaScript
    20% HTML5
    20% Kotlin +3
    20% Swift
    20% jquery
    10% Python

    OneTap Studio is a SEO services firm. They are headquartered in Noida, India. Their team focuses on Search Engine Optimization and Pay Per Click.

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  • Meldin Co. Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% Mobile App Development +12
    10% UX/UI Design
    10% Web Design
    5% Branding
    5% Content Marketing
    5% Digital Strategy
    5% E-Commerce Development
    5% Email Marketing
    5% Graphic Design
    5% Pay Per Click
    5% Product Design
    5% Search Engine Optimization
    5% Social Media Marketing

    Focus Areas

    15% JavaScript
    20% SQL
    10% HTML5 +8
    10% Java
    10% Ruby
    10% Rust
    5% AJAX
    5% Other programming & scripting languages
    5% PHP
    5% Visual Basic
    5% jquery

    Meldin Co. Is a small web design agency launched in 2023. Their services include Web Design and UX/UI Design.

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  • Devskee Logotype

    Devskee

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% AI Development
    10% BI & Big Data Consulting & SI +7
    10% Branding
    10% Custom Software Development
    10% E-Commerce Development
    10% Generative AI
    10% Mobile App Development
    10% Robotics Process Automation
    10% UX/UI Design

    Focus Areas

    15% JavaScript
    20% Java
    20% Python +3
    15% Go
    15% SQL
    15% Scala

    Devskee is a branding firm. Their team is based in Vilnius, Lithuania and specializes in Branding and UX/UI Design.

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  • isevenr Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% E-Commerce Development
    20% API Development +3
    20% Other Application Development
    10% DevOps Managed Services
    10% Low/No Code Development

    Focus Areas

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

    E-commerce development firm isevenr was launched in 2013. The team specializes in E-Commerce Development and Web Development.

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  • Flack Agency Logotype

    Flack Agency

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Branding
    10% Content Writing Services +7
    10% Custom Software Development
    10% Graphic Design
    10% Logo
    10% Mobile App Development
    10% Product Design
    10% UX/UI Design
    10% Web Design

    Focus Areas

    15% JavaScript
    30% HTML5
    30% PHP +3
    10% AJAX
    10% jquery
    5% Other programming & scripting languages

    Flack Agency is a branding company. The small Sochi, Russia-based team provides Branding and Web Design. The company was established in 2017.

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  • Nifty Web Studio Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Agege, Nigeria

    Services provided

    10% Web Development
    14% Low/No Code Development
    10% Branding +12
    10% Logo
    10% Web Design
    5% Content Marketing
    5% E-Commerce Development
    5% Email Marketing
    5% Graphic Design
    5% Mobile App Development
    5% Packaging Design
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design
    1% Custom Software Development

    Focus Areas

    15% JavaScript
    20% HTML5
    20% PHP +6
    15% SQL
    10% Python
    5% AJAX
    5% Kotlin
    5% Redux
    5% jquery

    Nifty Web Studio, a web design company, specialize in Web Design and Web Development. They were launched in 2019.

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  • NavSphere Infotech LLP Logotype

    NavSphere Infotech LLP

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% IT Staff Augmentation
    20% Mobile App Development +6
    10% Custom Software Development
    10% E-Commerce Development
    5% Application Management & Support
    5% Application Testing
    5% Cloud Consulting & SI
    5% Microservices Architecture Services

    Focus Areas

    10% JavaScript
    35% Java
    20% Python +3
    15% Kotlin
    10% HTML5
    10% PHP

    NavSphere Infotech LLP, an IT staff augmentation company, is located in Delhi, India and Tempe, Arizona. They focus on IT staff augmentation and Mobile App Development and were established in 2024.

    Read more
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  • Polywick Graphics, PH, Corp. Logotype

    Polywick Graphics, PH, Corp.

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    15% Web Development
    20% Custom Software Development
    15% API Development +4
    15% DevOps Managed Services
    15% Other Application Development
    10% Enterprise App Modernization
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    30% Java
    15% Delphi +5
    15% Other programming & scripting languages
    10% C#
    10% C++
    5% HTML5
    5% XML

    Polywick Graphics, PH, Corp. Is a small custom software development company. Founded in 2018, the team focuses on Custom Software Development and Web Development.

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Ability to deliver
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Clutch Leaders Matrix

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

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

List of the Top 15 JavaScript Development Companies

  1. ImageX Logotype

    ImageX

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

    Ability to deliver

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

    Service focus

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

    xfive

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

    Ability to deliver

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

    Service focus

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

    Brainhub

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

    Ability to deliver

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

    Service focus

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

    The Software House

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

    Ability to deliver

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

    Service focus

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

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    Airdev

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

    Ability to deliver

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

    Service focus

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

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

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

    Lizard Global

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

    Ability to deliver

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

    Service focus

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

    PopArt Studio

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

    Ability to deliver

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

    Service focus

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

    Softonix

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

    Ability to deliver

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

    Service focus

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

    Scopic

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

    Ability to deliver

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

    Service focus

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

    GeekyAnts

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

    Ability to deliver

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

    Service focus

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

    INOXOFT

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

    Ability to deliver

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

    Service focus

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

    HTMLPanda

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

    Ability to deliver

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

    Service focus

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

    SpdLoad

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

    Ability to deliver

    36.4/40.0
    16.6/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    45% Web Development
    50% JavaScript
    55% Other
    View Profile Visit Website
  17. Techuz InfoWeb Pvt. Ltd. Logotype

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

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

    PowerGate Software

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

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

    Toptal

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

    Ability to deliver

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

    Service focus

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

    Arcanys

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

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

    Blazity

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

    Ability to deliver

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

    Service focus

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

    Experion Technologies

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

    Ability to deliver

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

    Service focus

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

    Human Made

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

    Ability to deliver

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

    Service focus

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

    Vincit

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

    Ability to deliver

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

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

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

    Flowout

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

    Ability to deliver

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

    Service focus

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

    Sigma Software Group

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

    Ability to deliver

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

    Service focus

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

    Merixstudio

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

    Ability to deliver

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

    Service focus

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

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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