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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: December 24, 2025
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15 Leaders 15 Contenders

21,454 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

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    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

    4.9 87 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), is a web development firm offering comprehensive solutions in custom website development, full-stack web development, and web application development. With 100% positive feedback, clients commend their seamless integration into teams, high-quality deliverables, and responsiveness. Approximately 80% of reviews highlight their effective project management and communication, emphasizing their reliability and expertise in meeting project milestones.

    See all 87 projects
    6 of 6 reviews are 5 stars
    1 new review for Web Development services
    $10,000 – $49,000 avg. project cost

    Reviewed 6 times in the past 6 months

    Recent reviews for Digis highlight a strong overall sentiment, emphasizing excellent communication, timely delivery, and effective project management. Clients praised their quality of work, with one noting a 25% reduction in bug backlog and another highlighting increased conversions and improved user satisfaction. Specific feedback included the ability to adapt quickly to project needs and a solid understanding of Agile methodologies. No significant areas for improvement were identified, indicating high client satisfaction.
    Read 6 Recent Reviews
    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

    Digis has received overwhelmingly positive feedback from clients regarding their JavaScript services, with 92% of reviews highlighting strong project management and timely delivery. Clients frequently commend their top-tier developers and effective communication, resulting in faster feature delivery and enhanced productivity. Notably, 100% of reviewers did not identify any areas for improvement. The consistent ability to meet deadlines and provide quality solutions has made Digis a preferred partner for various projects, demonstrating their expertise in JavaScript-based applications.

    Read Most Recent Review
    16 of 22 Web Development reviews are 5 stars
    1 new review for Web Development in past 6 months
    $50,000 – $199,999 avg. project cost

    Web Development PROJECT HIGHLIGHT

    Development Staff Augmentation for Online Cooking Platform

    5.0 — Digis, a Fiverr company (NYSE: FVRR) provides staff augmentation services for an online cooking platform. The team is fully integrated into the client's existing agile squads and contributes to the Read more
    Read 22 Reviews

    Industry Experience

    Digis has demonstrated strong expertise across several industries, notably manufacturing, information technology, media, and education. Clients highlighted their effective project management, timely delivery, and high-quality work. In manufacturing, Digis improved website functionality, enhancing user experience. In IT, they provided specialized development support, notably in Scala and React, leading to increased efficiency. Overall, client feedback reflects a positive sentiment, suggesting strong alignment for projects across 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 Manufacturing Media
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  • Itechnotree Enterprise Pvt Ltd Logotype

    Not yet reviewed

    $5,000+
    < $25 / hr
    10 - 49
    Ahmedabad, India

    Services provided

    10% Web Development
    20% Custom Software Development
    20% E-Commerce Development +6
    15% Mobile App Development
    10% AI Development
    10% Enterprise App Modernization
    5% Application Management & Support
    5% IT Managed Services
    5% IT Staff Augmentation

    Focus Areas

    30% JavaScript
    30% PHP
    10% Typescript +6
    5% AJAX
    5% Kotlin
    5% Objective C
    5% Redux
    5% Swift
    5% Visual Basic

    Founded in 2015, Itechnotree Enterprise Pvt Ltd is a custom software development firm. The team provides Custom Software Development and E-Commerce Development.

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  • EgoBuilders Logotype

    EgoBuilders

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    10 - 49

    Services provided

    20% Web Development
    40% Web Design
    20% Ecommerce Marketing +1
    20% Search Engine Optimization

    Focus Areas

    20% JavaScript
    20% AJAX
    20% HTML5 +2
    20% PHP
    20% SQL

    EgoBuilders is a web design agency headquartered in Atlanta, Georgia. The team focuses on Web Design and Search Engine Optimization.

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  • Exito Systems Private Limited Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    30% Mobile App Development
    20% Custom Software Development +2
    10% Enterprise App Modernization
    10% Other Application Development

    Focus Areas

    10% JavaScript
    30% Java
    15% Kotlin +4
    15% Swift
    10% AJAX
    10% Python
    10% SQL

    Exito Systems Private Limited, a website development company, was launched in 2014. They focuses on Web Development and Mobile App Development.

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  • RAD TechPro Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    20% JavaScript
    20% Go
    20% Java +2
    20% PHP
    20% Python

    RAD TechPro, a small UX design agency, is based in Sahibzada Ajit Singh Nagar, India and Leipzig, Germany. The team focuses on UX/UI Design and cloud consulting & SI.

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  • SmartSoftAsia Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% BI & Big Data Consulting & SI
    10% CRM Consulting and SI +7
    10% Cloud Consulting & SI
    10% E-Commerce Development
    10% ERP Consulting and SI
    10% IT Managed Services
    10% IT Strategy Consulting
    10% Mobile App Development
    10% Other IT Consulting and SI

    Focus Areas

    30% JavaScript
    40% Other programming & scripting languages
    30% HTML5

    SmartSoftAsia is an IT strategy consulting company. Founded in 2012, the team offers IT strategy consulting and BI & big data consulting & SI.

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  • Mandolly Tech Pvt Ltd Logotype

    Not yet reviewed

    $5,000+
    < $25 / hr
    10 - 49
    Lalitpur, Nepal

    Services provided

    25% Web Development
    25% E-Commerce Development
    25% IT Staff Augmentation +1
    25% Web Design

    Focus Areas

    15% JavaScript
    20% PHP
    10% AJAX +8
    10% HTML5
    10% Redux
    10% SQL
    5% Ember.js
    5% Kotlin
    5% Other programming & scripting languages
    5% Python
    5% Typescript

    Mandolly Tech Pvt Ltd is a web design company. They were established in 2022, and their services include Web Design and IT staff augmentation.

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  • Highpoint Digital LLC Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49
    Wilsonville, OR

    Services provided

    30% Web Development
    30% Search Engine Optimization
    15% Content Marketing +5
    5% AI Consulting
    5% Email Marketing
    5% Pay Per Click
    5% Social Media Marketing
    5% Web Design

    Focus Areas

    10% JavaScript
    70% PHP
    10% HTML5 +2
    5% SQL
    5% Typescript

    Highpoint Digital LLC is a small SEO agency headquartered in Wilsonville, Oregon. Their services include Search Engine Optimization and Web Development.

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  • Profi.Dev Logotype

    Profi.Dev

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Application Management & Support
    20% E-Commerce Development +4
    10% Custom Software Development
    10% Low/No Code Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    50% PHP
    30% HTML5

    Profi.Dev is a software development company established in 1999. The small team focuses on Custom Software Development and Web Development.

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  • Webvision Techsolution Pvt. Ltd. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Surat, India

    Services provided

    30% Web Development
    45% Custom Software Development
    10% Web Design +3
    5% Graphic Design
    5% Mobile App Development
    5% UX/UI Design

    Focus Areas

    10% JavaScript
    40% PHP
    10% AJAX +4
    10% ASP.NET
    10% C#
    10% Python
    10% SQL

    Software development company Webvision Techsolution Pvt. Ltd. Specializes in Custom Software Development and Web Development. They are located in Surat, India and Surat, India.

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  • Algolix Technologies Pvt Ltd Logotype

    Algolix Technologies Pvt Ltd

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    15% API Development +5
    15% Custom Software Development
    10% Blockchain
    10% Mobile App Development
    5% CRM Consulting and SI
    5% IT Strategy Consulting

    Focus Areas

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

    Algolix Technologies Pvt Ltd, a website development company, is headquartered in lahore, Pakistan. They focus on Web Development and E-Commerce Development.

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  • Tech786 Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile App Development
    20% Search Engine Optimization +3
    20% UX/UI Design
    10% Digital Strategy
    10% Low/No Code Development

    Focus Areas

    20% JavaScript
    20% Redux
    15% PHP +4
    15% SQL
    10% Kotlin
    10% Python
    10% Ruby

    Established in 2021, Tech786 is a web development firm. The team focuses on Web Development and Search Engine Optimization.

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  • BYTENEXTGEN TECH SOLUTIONS PVT LTD Logotype

    BYTENEXTGEN TECH SOLUTIONS PVT LTD

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    10% E-Commerce Development +46
    5% Mobile App Development
    1% AI Consulting
    1% AI Development
    1% AR/VR Development
    1% Affiliate Marketing
    1% Application Management & Support
    1% Application Testing
    1% Architectural Design
    1% Blockchain
    1% Blockchain Marketing
    1% Business Consulting
    1% CRM Consulting and SI
    1% Cloud Consulting & SI
    1% Content Marketing
    1% Corporate Photography
    1% Corporate Training & Coaching
    1% Cybersecurity
    1% DevOps Managed Services
    1% Digital Asset Management
    1% Digital Strategy
    1% Document Digitization & Management
    1% ERP Consulting and SI
    1% Ecommerce Marketing
    1% Email Marketing
    1% Enterprise App Modernization
    1% Funding & Investment
    1% Generative AI
    1% Graphic Design
    1% IT Managed Services
    1% IT Staff Augmentation
    1% IT Strategy Consulting
    1% Interior Design
    1% IoT Development
    1% Logistics & Supply Chain Consulting
    1% Logo
    1% Microservices Architecture Services
    1% Mobile & App Marketing
    1% Pay Per Click
    1% Product Design
    1% SMS Marketing
    1% Search Engine Optimization
    1% Social Media Marketing
    1% UX/UI Design
    1% Video Marketing
    1% Video Production
    1% Web Design

    Focus Areas

    20% JavaScript
    20% Java
    20% Objective C +2
    20% Swift
    20% Typescript

    Founded in 2019, BYTENEXTGEN TECH SOLUTIONS PVT LTD is a custom software development firm. The firm focuses on Custom Software Development and Web Development, and is small.

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  • The Brand Development Group Logotype

    The Brand Development Group

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49

    Services provided

    15% Web Development
    30% Branding
    20% Event Management +5
    10% Event Marketing
    10% Other Digital Marketing
    5% Advertising
    5% Media Planning & Buying
    5% Social Media Marketing

    Focus Areas

    25% JavaScript
    50% PHP
    25% SQL

    Branding agency The Brand Development Group is in Covington, Georgia. Founded in 2022, the team provides Branding and Event Management.

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  • Business Ecosystem Engineering Logotype

    Business Ecosystem Engineering

    Not yet reviewed

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

    Services provided

    20% Web Development
    30% Blockchain
    10% AR/VR Development +13
    4% Web Design
    3% API Development
    3% Application Management & Support
    3% CRM Consulting and SI
    3% Cloud Consulting & SI
    3% DevOps Managed Services
    3% ECM Consulting and SI
    3% ERP Consulting and SI
    3% IT Managed Services
    3% IT Staff Augmentation
    3% Microservices Architecture Services
    3% Product Design
    3% UX/UI Design

    Focus Areas

    20% JavaScript
    20% HTML5
    20% Python +18
    20% Typescript
    2% Go
    2% Kotlin
    2% UnrealScript
    1% AJAX
    1% Apex
    1% C#
    1% C++
    1% Elixir
    1% Java
    1% Objective C
    1% PHP
    1% Redux
    1% Ruby
    1% Rust
    1% SQL
    1% Swift
    1% jquery

    Business Ecosystem Engineering is a Blockchain company. The London, England-based agency was launched in 2022. Their team focuses on Blockchain and Web Development.

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  • Openteq.xyz Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    30% Mobile App Development
    20% Web Design +2
    15% E-Commerce Development
    5% IT Strategy Consulting

    Focus Areas

    10% JavaScript
    20% Kotlin
    15% Swift +6
    10% AJAX
    10% PHP
    10% Perl
    10% Python
    10% Ruby
    5% SQL

    Openteq.xyz is a web development company. In Noida, India and Bhubaneswar, India, the agency was established in 2016. Their services include Web Development and Mobile App Development.

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  • Bitcare Software Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    20% JavaScript
    20% PHP
    15% ASP.NET +3
    15% Ember.js
    15% Java
    15% backbone.js

    Bitcare Software Pvt Ltd is a web design agency founded in 2018. The firm specializes in Web Design and Custom Software Development, and is small.

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  • adronSoft Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +3
    20% Search Engine Optimization
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    20% JavaScript
    20% AJAX
    20% PHP +2
    20% SQL
    20% Swift

    SEO company adronSoft offers Search Engine Optimization and Web Design. They were established in 2017.

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  • Metastic World Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    35% Mobile App Development
    10% Application Management & Support +5
    10% DevOps Managed Services
    10% E-Commerce Development
    10% Wearable App Development
    5% API Development
    5% Other Application Development

    Focus Areas

    25% JavaScript
    40% Other programming & scripting languages
    5% AJAX +6
    5% HTML5
    5% PHP
    5% Python
    5% SQL
    5% XML
    5% jquery

    Headquartered in Noida, India, Metastic World is a small mobile app development firm. Their services include Mobile App Development and Web Development.

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  • Quantnix Logotype

    Quantnix

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    30% JavaScript
    25% Visual Basic
    20% Ember.js +2
    15% PHP
    10% AJAX

    Quantnix, a social media marketing agency, provides Social Media Marketing and Search Engine Optimization. The company is based in Sheridan, Wyoming.

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  • Seema Web Solution Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    20% JavaScript
    30% PHP
    25% HTML5 +2
    15% AJAX
    10% SQL

    Seema Web Solution is a SEO company. The Narsinghpur, India-based company specializes in Search Engine Optimization and Web Design.

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  • MuseTec Innovations Ltd Logotype

    Not yet reviewed

    $1,000+
    Undisclosed
    10 - 49
    Abuja, Nigeria

    Services provided

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

    Focus Areas

    20% JavaScript
    20% HTML5
    20% Other programming & scripting languages +2
    20% Typescript
    20% jquery

    MuseTec Innovations Ltd is a web design company established in 2023. The team provides Web Design and Custom Software Development.

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  • ZAEC Logotype

    ZAEC

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    10% BI & Big Data Consulting & SI +5
    10% IT Strategy Consulting
    10% Low/No Code Development
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design

    Focus Areas

    25% JavaScript
    30% PHP
    15% HTML5 +3
    10% AJAX
    10% SQL
    10% jquery

    ZAEC is a website development firm. They are based in Osijek, Croatia, and their services include Web Development and E-Commerce Development.

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  • Viento Digital Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    Ciudad de México, Mexico

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Enterprise App Modernization +2
    20% Mobile App Development
    20% Product Design

    Focus Areas

    20% JavaScript
    20% C#
    20% PHP +2
    20% Python
    20% Ruby

    Established in 2012, Viento Digital is a Product Design company. Located in Ciudad de México, Mexico, the team focuses on Product Design and Web Development.

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  • Sky Dream IT Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49
    Dhaka, Bangladesh

    Services provided

    20% Web Development
    20% Web Design
    15% Branding +4
    15% Search Engine Optimization
    10% Custom Software Development
    10% Mobile App Development
    10% Social Media Marketing

    Focus Areas

    20% JavaScript
    15% HTML5
    15% jquery +5
    10% AJAX
    10% PHP
    10% Redux
    10% SQL
    10% Typescript

    Web design agency Sky Dream IT was launched in 2016. The company offers Web Design and Web Development.

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  • Techmates Technologies Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Noida, India

    Services provided

    20% Web Development
    20% IT Managed Services
    20% IT Strategy Consulting +3
    20% Mobile App Development
    10% Custom Software Development
    10% Cybersecurity

    Focus Areas

    20% JavaScript
    20% Java
    20% PHP +3
    15% Kotlin
    15% Swift
    10% C#

    Techmates Technologies is a web development company specializing in custom website development, web design, and web application development. The reviews highlight their technical expertise and proactive communication, with 100% positive feedback on their ability to understand business needs and deliver effective solutions. Additionally, 100% of reviewers appreciated their value for cost, although minor improvements were noted.

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  • We2code Technology Pvt Ltd Logotype

    We2code Technology Pvt Ltd

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49

    Services provided

    20% Web Development
    20% Custom Software Development
    20% IT Strategy Consulting +3
    20% UX/UI Design
    10% Low/No Code Development
    10% Web Design

    Focus Areas

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

    Launched in 2018, We2code Technology Pvt Ltd is a web design agency. Based in Indore, India, the team focuses on Web Design and UX/UI Design.

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  • INCODE Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    10 - 49
    Warszawa, Poland

    Services provided

    20% Web Development
    25% Custom Software Development
    20% AI Development +2
    20% Mobile App Development
    15% E-Commerce Development

    Focus Areas

    20% JavaScript
    20% HTML5
    20% Python +3
    20% jquery
    10% PHP
    10% SQL

    INCODE is a Warszawa, Poland-based custom software development company. Their services include Custom Software Development and Web Development.

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  • ivector Logotype

    ivector

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49

    Services provided

    20% Web Development
    20% AI Development
    20% Cloud Consulting & SI +3
    20% ERP Consulting and SI
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

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

    Ivector, a cloud consulting & SI company, is located in Sacramento, California. Established in 2020, the team specializes in cloud consulting & SI and ERP consulting and SI.

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  • Crow Computing Ltd Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    10 - 49
    Surrey, Canada

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% IT Managed Services +2
    20% IT Strategy Consulting
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    20% C#
    20% PHP +2
    20% Python
    20% SQL

    Founded in 2012, Crow Computing Ltd is a small Surrey, Canada-based IT strategy consulting company. Their services include IT strategy consulting and IT managed services.

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  • HIGHKEEN TECHNOLOGIES PRIVATE LIMITED Logotype

    Not yet reviewed

    $25,000+
    $25 - $49 / hr
    10 - 49
    North Dumdum, India

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% Enterprise App Modernization +2
    20% Mobile App Development
    20% UX/UI Design

    Focus Areas

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

    HIGHKEEN TECHNOLOGIES PRIVATE LIMITED, a small user experience design company, is located in North Dumdum, India and Kolkata, India. Their services include UX/UI Design and cloud consulting & SI.

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  • Totem Studio Logotype

    Totem Studio

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49

    Services provided

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

    Focus Areas

    20% JavaScript
    40% Swift
    20% HTML5 +1
    20% Typescript

    Totem Studio, a branding firm, is located in Berlin, Germany. Launched in 2020, the team focuses on Branding and UX/UI Design.

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  • Delphi Technologies Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49
    London, England

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Digital Strategy +2
    20% Product Design
    20% Product Marketing

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% Kotlin +2
    20% PHP
    20% Swift

    Delphi Technologies is a Digital Strategy company in London, England. The team specializes in Digital Strategy and Product Design.

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  • Magnet Digital Marketing Agency Logotype

    Magnet Digital Marketing Agency

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Graphic Design +2
    20% Social Media Marketing
    20% Web Design

    Focus Areas

    20% JavaScript
    20% HTML5
    20% PHP +2
    20% Python
    20% SQL

    Magnet Digital Marketing Agency is a social media marketing firm headquartered in Nairobi, Kenya. They offer Social Media Marketing and Web Design.

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  • Bigfil Project House Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    10 - 49
    Istanbul, Türkiye

    Services provided

    25% Web Development
    30% Web Design
    20% UX/UI Design +2
    15% E-Commerce Development
    10% Mobile App Development

    Focus Areas

    15% JavaScript
    30% ASP.NET
    20% C# +2
    20% Typescript
    15% Java

    Web design agency Bigfil Project House was established in 2018. Based in Istanbul, Türkiye, the team specializes in Web Design and Web Development.

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  • WAWA SERVICE AND MARKETING GROUP CO., LTD Logotype

    WAWA SERVICE AND MARKETING GROUP CO., LTD

    Not yet reviewed

    $10,000+
    Undisclosed
    10 - 49

    Services provided

    20% Web Development
    30% IT Strategy Consulting
    30% UX/UI Design +1
    20% Custom Software Development

    Focus Areas

    20% JavaScript
    30% PHP
    30% SQL +1
    20% HTML5

    WAWA SERVICE AND MARKETING GROUP CO., LTD, an UX design company, was launched in 2021. The small team specializes in UX/UI Design and IT strategy consulting.

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  • Turingoid software agency Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile App Development
    10% API Development +5
    10% DevOps Managed Services
    10% E-Commerce Development
    10% Product Design
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    25% SQL
    15% PHP +5
    15% Typescript
    10% jquery
    5% HTML5
    5% Redux
    5% XML

    Turingoid software agency is a website development company. The Karachi, Pakistan-based firm was launched in 2018. Their services include Web Development and Mobile App Development.

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  • Crown TechSol Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Branding
    20% Mobile App Development +2
    20% Pay Per Click
    20% Search Engine Optimization

    Focus Areas

    20% JavaScript
    20% AJAX
    20% Java +2
    20% PHP
    20% Python

    Crown TechSol is a branding agency. They are in Faisalabad, Pakistan and Dubai, United Arab Emirates and have small team of experts. Their services include Branding and Search Engine Optimization.

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  • Ripplestacks Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    20% Generative AI
    20% IT Staff Augmentation +4
    15% Mobile App Development
    10% Product Design
    10% UX/UI Design
    10% Web Design

    Focus Areas

    25% JavaScript
    50% Typescript
    10% Apex +2
    10% SQL
    5% HTML5

    Founded in 2018, Ripplestacks, a small IT staff augmentation company, is based in Surat, India. Their services include IT staff augmentation and Generative AI.

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  • Vivanet Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% AI Development
    20% Custom Software Development +2
    20% IT Staff Augmentation
    20% IT Strategy Consulting

    Focus Areas

    20% JavaScript
    20% Java
    10% HTML5 +6
    10% Python
    10% Redux
    10% SQL
    10% Typescript
    5% ASP.NET
    5% jquery

    Vivanet is a small IT strategy consulting company. Established in 2022, the team provides IT strategy consulting and IT staff augmentation.

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  • Blue Ocean Technology, LLC Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Gardiner, NY

    Services provided

    20% Web Development
    15% Social Media Marketing
    12% E-Commerce Development +6
    11% Ecommerce Marketing
    10% Application Management & Support
    10% Email Marketing
    10% Search Engine Optimization
    6% API Development
    6% Microservices Architecture Services

    Focus Areas

    20% JavaScript
    20% PHP
    20% SQL +4
    15% AJAX
    15% HTML5
    5% Typescript
    5% jquery

    Blue Ocean Technology, LLC is a web development company. The small Gardiner, New York-based team focuses on Web Development and Social Media Marketing. The firm was founded in 2000.

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  • Infinitrs Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    10 - 49
    Karachi, Pakistan

    Services provided

    20% Web Development
    20% Cybersecurity
    20% E-Commerce Development +2
    20% ERP Consulting and SI
    20% Search Engine Optimization

    Focus Areas

    20% JavaScript
    20% AJAX
    20% ASP.NET +2
    20% PHP
    20% jquery

    Infinitrs, a SEO agency, provide Search Engine Optimization and ERP consulting and SI. They were founded in 2020.

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  • Yavcode Logotype

    Yavcode

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49

    Services provided

    10% Web Development
    30% Web Design
    15% Mobile App Development +4
    15% UX/UI Design
    10% E-Commerce Development
    10% Graphic Design
    10% Logo

    Focus Areas

    30% JavaScript
    30% PHP
    20% HTML5 +2
    10% Other programming & scripting languages
    10% SQL

    Yavcode is a web design company. Based in cairo, Egypt, the company provides Web Design and UX/UI Design.

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  • A-NSOFTTECH Logotype

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    10 - 49
    Columbus, OH

    Services provided

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

    Focus Areas

    20% JavaScript
    20% HTML5
    20% Java +2
    20% XML
    20% jquery

    Established in 2008, A-NSOFTTECH is a small web design company headquartered in Columbus, Ohio. Their team offers Web Design and Custom Software Development.

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  • Inneraktive Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    10 - 49
    Dubai, United Arab Emirates

    Services provided

    20% Web Development
    20% AI Development
    20% Low/No Code Development +2
    20% Mobile App Development
    20% UX/UI Design

    Focus Areas

    20% JavaScript
    50% PHP
    15% Go +1
    15% Swift

    Inneraktive is an UX design company. Located in Dubai, United Arab Emirates, the agency provides UX/UI Design and Mobile App Development.

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  • THE VATE Logotype

    THE VATE

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Branding
    20% Digital Strategy +2
    20% E-Commerce Development
    20% Web Design

    Focus Areas

    20% JavaScript
    35% HTML5
    25% Java +1
    20% PHP

    Founded in 2023, THE VATE is a branding company. The team offers Branding and Digital Strategy.

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  • Subtle Marketing Logotype

    Subtle Marketing

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Branding
    20% Pay Per Click +2
    20% Search Engine Optimization
    20% Social Media Marketing

    Focus Areas

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

    Subtle Marketing is a branding company. They were established in 2024 and provide Branding and Social Media Marketing.

    Read more
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  • Bigladder Technologies LLP Logotype

    Bigladder Technologies LLP

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Blockchain
    20% Cloud Consulting & SI +2
    20% Custom Software Development
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    20% HTML5
    20% Java +2
    20% PHP
    20% Typescript

    Bigladder Technologies LLP is a cloud consulting & SI company. Their team is in New Delhi, India. The company provides cloud consulting & SI and Custom Software Development.

    Read more
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  • Need for Success Logotype

    Need for Success

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Graphic Design
    20% Search Engine Optimization +2
    20% Social Media Marketing
    20% Web Design

    Focus Areas

    20% JavaScript
    10% Java
    10% Typescript +11
    10% UnrealScript
    5% AJAX
    5% Ember.js
    5% HTML5
    5% Objective C
    5% Redux
    5% Rust
    5% Scala
    5% Visual Basic
    5% backbone.js
    5% jquery

    Need for Success is a social media marketing firm. They were founded in 2024, and their services include Social Media Marketing and Search Engine Optimization.

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  • TechVerdi Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49
    Pully, Switzerland

    Services provided

    30% Web Development
    40% Custom Software Development
    20% Mobile App Development +1
    10% Search Engine Optimization

    Focus Areas

    10% JavaScript
    10% C#
    10% ColdFusion +7
    10% HTML5
    10% Java
    10% PHP
    10% Python
    10% Ruby
    10% Swift
    10% Typescript

    TechVerdi is a software development firm based in Pully, Switzerland and Milano, Italy. The team focuses on Custom Software Development and Web Development.

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  • Xtreme IT Services Logotype

    Xtreme IT Services

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49

    Services provided

    20% Web Development
    20% Content Marketing
    20% Mobile App Development +2
    20% Pay Per Click
    20% Search Engine Optimization

    Focus Areas

    20% JavaScript
    20% HTML5
    20% PHP +2
    20% Typescript
    20% jquery

    Based in عجمان, United Arab Emirates, Xtreme IT Services is a small Content Marketing company. The team offers Content Marketing and Search Engine Optimization.

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We evaluate service providers using a structured methodology that combines:

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

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Ability to deliver
Focus
Clutch Leaders Matrix

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

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

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
    70% JavaScript
    50% Other
    View Profile Visit Website
  2. xfive Logotype

    xfive

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

    Ability to deliver

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

    Service focus

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

    37.7/40.0
    18.4/20 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

    38.9/40.0
    19.6/20 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

    39.3/40.0
    19.8/20 Reviews
    10/10 Clients & Experience
    9.5/10 Market Presence

    Service focus

    50% Web Development
    35% JavaScript
    50% Other
    View Profile Visit Website
  8. Toptal Logotype

    Toptal

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

    Ability to deliver

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

    Service focus

    15% Web Development
    25% JavaScript
    85% Other
    View Profile Visit Website
  9. 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
  10. INOXOFT Logotype

    INOXOFT

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

    Ability to deliver

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

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  11. 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
  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. Techuz InfoWeb Pvt. Ltd. Logotype

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  16. HTMLPanda Logotype

    HTMLPanda

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

    Ability to deliver

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

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  17. Sigma Software Group Logotype

    Sigma Software Group

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

    30% Web Development
    15% JavaScript
    70% Other
    View Profile Visit Website
  21. 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
  22. 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
  23. Experion Technologies Logotype

    Experion Technologies

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

    Ability to deliver

    36.9/40.0
    17.2/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

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

    Human Made

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

    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
  25. Probey Services Logotype

    Probey Services

    $1,000+
    < $25 / hr
    1,000 - 9,999
    Los Angeles, CA

    Ability to deliver

    36.9/40.0
    19.6/20 Reviews
    9.3/10 Clients & Experience
    8/10 Market Presence

    Service focus

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

    Blazity

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

    Ability to deliver

    37.8/40.0
    18.6/20 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
    New York, NY

    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. Vincit Logotype

    Vincit

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

    Ability to deliver

    36.4/40.0
    16.4/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

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

    PowerGate Software

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

    Ability to deliver

    37.9/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

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

    Arcanys

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

    Ability to deliver

    38.1/40.0
    19.4/20 Reviews
    10/10 Clients & Experience
    8.7/10 Market Presence

    Service focus

    30% Web Development
    20% JavaScript
    70% 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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