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Top JavaScript Developers

JavaScript powers everything from interactive websites to complex enterprise applications. Partnering with an experienced JavaScript development agency ensures your product is fast, secure, and ready to scale. Clutch makes it easy to find trusted providers by publishing in-depth, verified client reviews and transparent performance data. Use our filters to sort agencies by budget, location, framework expertise, and more. Looking for regional specialists? Browse firms in the United States, United Kingdom, or Canada to compare portfolios and pricing in your market. Start exploring today and shortlist partners that align with your goals.
Ratings Updated: February 7, 2026
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15 Leaders 15 Contenders

21,635 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 88 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

    50% Web Development
    50% Custom Software Development

    Focus Areas

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

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

    See all 88 projects
    5 of 5 JavaScript reviews are 5 stars
    2 new reviews for JavaScript in past 6 months
    $10,000 – $49,000 avg. project cost

    JavaScript Experience

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

    Read Most Recent Review
    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

    Hosting Platform Development for Advertising & Marketing Co

    4.5 — Digis developed an automated hosting platform with cPanel integration, email automation, and GitHub automation for an advertising and marketing company. Read more
    Read 22 Reviews

    Industry Experience

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

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    Select Industry to see insights

    Human Resources Software Consulting Information technology Telecommunications Education Advertising & marketing Other industries Financial services eCommerce Retail Other Industry Automotive IT Services Energy & natural resources Gaming Transportation Business services Real estate Legal Arts, entertainment & music Wellness & Fitness Manufacturing Media
    $50,000 Best for Small Companies $75,000 Best for Medium Companies $100,000 Best for Enterprises

    Custom Product Development

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

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    Río Cuarto, Argentina

    Services provided

    20% Web Development
    30% Custom Software Development
    20% Mobile App Development +5
    10% UX/UI Design
    5% Application Management & Support
    5% Blockchain
    5% IT Staff Augmentation
    5% Product Design

    Focus Areas

    20% JavaScript
    35% Ruby
    10% PHP +7
    5% AJAX
    5% Go
    5% Python
    5% Redux
    5% SQL
    5% Swift
    5% Typescript

    Launched in 2013, Plum is a custom software development company. The agency focuses on Custom Software Development and Web Development, and is small.

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  • Perceptive Media Solutions Logotype

    Not yet reviewed

    $100,000+
    $50 - $99 / hr
    10 - 49
    Lagos, Nigeria

    Services provided

    20% Web Development
    20% Branding
    20% Digital Strategy +3
    20% E-Commerce Development
    10% Mobile App Development
    10% UX/UI Design

    Focus Areas

    20% JavaScript
    20% PHP
    20% SQL +4
    10% AJAX
    10% ASP.NET
    10% Python
    10% Redux

    Founded in 2009, Perceptive Media Solutions is a branding firm. The team focuses on Branding and Digital Strategy.

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  • Hyzen Technologies Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    15% Logo +6
    15% Web Design
    10% UX/UI Design
    5% Custom Software Development
    5% Digital Strategy
    5% IT Strategy Consulting
    5% Mobile App Development

    Focus Areas

    20% JavaScript
    30% PHP
    10% AJAX +4
    10% Kotlin
    10% Objective C
    10% SQL
    10% Swift

    Hyzen Technologies is a small Ahmedabad, India-based e-commerce development company. Their services include E-Commerce Development and Web Development.

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  • OWLFINITY Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    30% Mobile App Development
    20% Social Media Marketing +2
    15% Custom Software Development
    15% E-Commerce Development

    Focus Areas

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

    OWLFINITY, a mobile app development company, was founded in 2017. Headquartered in Yerevan, Armenia, the team focuses on Mobile App Development and Social Media Marketing.

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  • Smart Processes LLC Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Tiranë, Albania

    Services provided

    20% Web Development
    20% Custom Software Development
    15% Application Management & Support +3
    15% E-Commerce Development
    15% IoT Development
    15% Mobile App Development

    Focus Areas

    20% JavaScript
    20% C#
    20% C++ +2
    20% Java
    20% XML

    Smart Processes LLC is a custom software development company. Established in 2010, the company is located in Tiranë, Albania. Their team offers Custom Software Development and Web Development.

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  • Oaperg Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Application Management & Support
    20% Custom Software Development +2
    20% Enterprise App Modernization
    20% IoT Development

    Focus Areas

    20% JavaScript
    20% C#
    20% Python +2
    20% SQL
    20% Visual Basic

    Oaperg, a small software development firm, is headquartered in Houston, Texas. Their services include Custom Software Development and Enterprise App Modernization.

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  • LozpData Software Solutions Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    20% JavaScript
    10% AJAX
    10% Java +6
    10% Kotlin
    10% Python
    10% Redux
    10% SQL
    10% Swift
    10% Typescript

    LozpData Software Solutions is a web design company headquartered in Rosenberg, Texas. Their services include Web Design and UX/UI Design.

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  • AMIT Experts Logotype

    Not yet reviewed

    $10,000+
    < $25 / hr
    10 - 49
    Cairo, Egypt

    Services provided

    30% Web Development
    30% Mobile App Development
    15% Custom Software Development +2
    15% E-Commerce Development
    10% Application Testing

    Focus Areas

    10% JavaScript
    20% PHP
    10% Python +11
    10% Swift
    5% ASP.NET
    5% C
    5% C#
    5% C++
    5% Java
    5% Kotlin
    5% Objective C
    5% Ruby
    5% SQL
    5% Visual Basic

    AMIT Experts is a website development company. Located in Cairo, Egypt, the agency was founded in 2011. Their services include Web Development and Mobile App Development.

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  • Digital Capra Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    15% E-Commerce Development
    15% Mobile App Development +4
    15% UX/UI Design
    10% Custom Software Development
    10% Low/No Code Development
    10% Web Design

    Focus Areas

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

    Small web development firm Digital Capra, is in Karachi, Pakistan. The team provides Web Development and Web Design.

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  • NarvalDreams SAS de CV Logotype

    Not yet reviewed

    $1,000+
    Undisclosed
    10 - 49
    Ciudad de México, Mexico

    Services provided

    25% Web Development
    25% Digital Strategy
    25% E-Commerce Development +3
    10% IT Strategy Consulting
    10% Mobile App Development
    5% Other Application Development

    Focus Areas

    15% JavaScript
    35% PHP
    30% SQL +2
    10% AJAX
    10% XML

    NarvalDreams SAS de CV is a small Digital Strategy company founded in 2020. Their team offers Digital Strategy and Web Development.

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  • Hatch Product Development Logotype

    Hatch Product Development

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49

    Services provided

    10% Web Development
    10% Application Testing
    10% Architectural Design +7
    10% Contract Manufacturing
    10% Custom Software Development
    10% Market Research
    10% Mobile App Development
    10% Product Design
    10% UX/UI Design
    10% Web Design

    Focus Areas

    30% JavaScript
    40% Swift
    30% Java

    Founded in 2021, Hatch Product Development is a small Chicago, Illinois-based Market Research company. Their services include Market Research and Web Design.

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  • Fuel Impact Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    10 - 49
    Salt Lake City, UT

    Services provided

    10% Web Development
    17% Digital Strategy
    17% IT Strategy Consulting +5
    16% UX/UI Design
    15% Business Consulting
    10% Low/No Code Development
    10% Mobile App Development
    5% Commercial Brokerage Services

    Focus Areas

    30% JavaScript
    20% Kotlin
    20% PHP +2
    20% Swift
    10% Typescript

    Based in Salt Lake City, Utah, Fuel Impact is a small Digital Strategy company. Their services include Digital Strategy and IT strategy consulting.

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  • Madhuma Global Ventures Private Limited Logotype

    Madhuma Global Ventures Private Limited

    Not yet reviewed

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

    Services provided

    15% Web Development
    50% IT Staff Augmentation
    15% Custom Software Development +2
    15% E-Commerce Development
    5% Web Design

    Focus Areas

    25% JavaScript
    30% PHP
    15% Python +3
    10% AJAX
    10% SQL
    10% Swift

    Madhuma Global Ventures Private Limited is an Indore, India-based IT staff augmentation company. Founded in 2020, the team specializes in IT staff augmentation and Custom Software Development.

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  • WeMakeLeads Logotype

    WeMakeLeads

    Not yet reviewed

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

    Services provided

    10% Web Development
    25% Web Design
    10% E-Commerce Development +25
    10% Email Marketing
    10% Social Media Marketing
    5% Advertising
    5% Conversion Optimization
    5% Digital Strategy
    1% Application Testing
    1% Branding
    1% Content Marketing
    1% Custom Software Development
    1% Direct Marketing
    1% ECM Consulting and SI
    1% ERP Consulting and SI
    1% Event Marketing
    1% IT Managed Services
    1% Market Research
    1% Marketing Strategy
    1% Mobile & App Marketing
    1% Mobile App Development
    1% Other Design
    1% Other Digital Marketing
    1% Packaging Design
    1% Pay Per Click
    1% Search Engine Optimization
    1% UX/UI Design
    1% Video Production

    Focus Areas

    30% JavaScript
    20% PHP
    5% AJAX +9
    5% ASP.NET
    5% C#
    5% C++
    5% Java
    5% Python
    5% Ruby
    5% SQL
    5% Visual Basic
    5% XML

    WeMakeLeads is a web design company. They are headquartered in Brooklyn, New York and have small team. They offer Web Design and Social Media Marketing.

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  • Streetware Systems Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    20% Application Testing
    14% Low/No Code Development +10
    10% Application Management & Support
    5% E-Commerce Development
    5% Mobile App Development
    5% Search Engine Optimization
    2% AI Development
    2% Content Marketing
    2% IT Managed Services
    2% Other Application Development
    2% Social Media Marketing
    1% Custom Software Development

    Focus Areas

    10% JavaScript
    20% Java
    15% ASP.NET +8
    15% C#
    10% PHP
    5% AJAX
    5% ASP
    5% Redux
    5% SQL
    5% Typescript
    5% XML

    Launched in 2002, Streetware Systems is a small Sugar Land, Texas-based website development company. Their services include Web Development and Application Testing.

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  • True Sales Soft Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49
    Kutaisi, Georgia

    Services provided

    10% Web Development
    50% CRM Consulting and SI
    30% Custom Software Development +1
    10% Low/No Code Development

    Focus Areas

    30% JavaScript
    40% Apex
    10% Java +4
    5% C#
    5% PHP
    5% Python
    5% SQL

    Small CRM consulting and SI company True Sales Soft, is based in Kutaisi, Georgia. The team provides CRM consulting and SI and Custom Software Development.

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  • Asynczone Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49
    Varanasi, India

    Services provided

    20% Web Development
    20% E-Commerce Development
    15% Advertising +4
    15% Search Engine Optimization
    10% Custom Software Development
    10% Low/No Code Development
    10% Social Media Marketing

    Focus Areas

    20% JavaScript
    40% PHP
    20% HTML5 +2
    10% AJAX
    10% Ruby

    Located in Varanasi, India, Asynczone is a small web development firm. Their services include Web Development and E-Commerce Development.

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  • Essential Infotech Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    30% Back Office Outsourcing
    15% Call Center Services +4
    15% Customer Service Outsourcing
    10% AI Development
    10% Mobile App Development
    5% Robotics Process Automation

    Focus Areas

    25% JavaScript
    40% PHP
    20% SQL +1
    15% Python

    Essential Infotech provides services in Website Development, Web Design, and Online Development, as demonstrated by their successful creation of mobile applications and a website for a platform addressing food waste. Reviews highlight their professionalism, effective project management, and ability to deliver high-quality, production-ready projects within budget, resulting in a seamless user experience and significant user engagement.

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  • AppFellas Mobile & Web Development Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    30% Mobile App Development
    10% Custom Software Development +6
    10% E-Commerce Development
    10% Search Engine Optimization
    10% Social Media Marketing
    5% Application Management & Support
    5% Application Testing
    5% Digital Strategy

    Focus Areas

    25% JavaScript
    15% Java
    15% Kotlin +4
    15% Swift
    10% C#
    10% Redux
    10% Typescript

    AppFellas Mobile & Web Development is an app development firm established in 2013. In istanbul, Türkiye, the team provides Mobile App Development and Web Development.

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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.

    Read more
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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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  • 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.

    Read more
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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.

    Read more
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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.

    View Profile
  • 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.

    Read more
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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.

    Read more
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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.

    Read more
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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.

    Read more
    View Profile
  • 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.

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

List of the Top 15 JavaScript Development Companies

  1. Brainhub Logotype

    Brainhub

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

    Ability to deliver

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

    Service focus

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

    ImageX

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

    Ability to deliver

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

    Service focus

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

    xfive

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

    Ability to deliver

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

    Service focus

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

    The Software House

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

    Ability to deliver

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

    Service focus

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

    ATEAM SOFT SOLUTIONS

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

    Ability to deliver

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

    Service focus

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

    Airdev

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

    Ability to deliver

    39.1/40.0
    19.8/20 Reviews
    9.6/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

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

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    Softonix

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

    Ability to deliver

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

    Service focus

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

    Toptal

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

    Ability to deliver

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

    Service focus

    15% Web Development
    25% JavaScript
    85% Other
    View Profile Visit Website
  10. Lizard Global Logotype

    Lizard Global

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

    Ability to deliver

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

    Service focus

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

    INOXOFT

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

    Ability to deliver

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

    Service focus

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

    PopArt Studio

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

    Ability to deliver

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

    Service focus

    35% Web Development
    40% JavaScript
    65% Other
    View Profile Visit Website
  13. GeekyAnts Logotype

    GeekyAnts

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

    Ability to deliver

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

    Service focus

    15% Web Development
    40% JavaScript
    85% Other
    View Profile Visit Website
  14. SpdLoad Logotype

    SpdLoad

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

    Ability to deliver

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

    Service focus

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

    Brainium Information Technologies

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

    Ability to deliver

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

    Service focus

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

    HTMLPanda

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

    Ability to deliver

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

    Service focus

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

    Sigma Software Group

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

    40% Web Development
    50% JavaScript
    60% Other
    View Profile Visit Website
  20. Techuz InfoWeb Pvt. Ltd. Logotype

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

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

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

    65% Web Development
    20% JavaScript
    35% Other
    View Profile Visit Website
  22. Human Made Logotype

    Human Made

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

    Ability to deliver

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

    Service focus

    100% Web Development
    30% JavaScript
    View Profile Visit Website
  23. Arcanys Logotype

    Arcanys

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

    Ability to deliver

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

    Service focus

    30% Web Development
    20% JavaScript
    70% Other
    View Profile Visit Website
  24. Experion Technologies Logotype

    Experion Technologies

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

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

    Blazity

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

    Ability to deliver

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

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

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

    Probey Services

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

    Ability to deliver

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

    Service focus

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

    Vincit

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

    Ability to deliver

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

    Service focus

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

    Oshyn

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

    Ability to deliver

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

    Service focus

    100% Web Development
    40% JavaScript
    View Profile Visit Website

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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