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Top JavaScript Developers

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

22,060 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Featured

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    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

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

    Services provided

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

    Focus Areas

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

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

    See all 89 projects
    17 of 23 Web Development reviews are 5 stars
    2 new reviews 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 23 Reviews

    Industry Experience

    Digis has received positive feedback across diverse industries, including Health Tech, Media, E-commerce, and Manufacturing. Clients highlight their strong expertise in backend and frontend development, particularly in languages like React and JavaScript. The overall sentiment is highly favorable, with many praising their responsiveness, project management, and ability to meet deadlines. Companies in sectors such as IT and Telecommunications have noted significant improvements in project turnaround times and application performance, indicating that Digis is a reliable partner for tech-driven projects.

    Read All Reviews

    Select Industry to see insights

    Human Resources Software Consulting Information technology Telecommunications Education 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 Advertising & marketing

    Average Project Cost Breakdown

    $10,000 to $49,000 (25) $50,000 to $199,999 (16) Less than $10,000 (8) $200,000 to $999,999 (6) $1,000,000 to $9,999,999 (4)

    What Clients Have Said

    Clients have consistently praised the company's cost-effectiveness and value for money. Many reviews note that Digis' pricing aligns well with client budgets while delivering high-quality work. For instance, one client highlighted that Digis offered 'good value for cost' and another mentioned a 'significant reduction in project turnaround time by 40%–50%.' Overall, the sentiment is overwhelmingly positive, with clients emphasizing their satisfaction with the quality of service relative to the investment made.
    Read All Reviews

    View projects from:

    United States (29) Germany (7) Ukraine (7) England (4) France (4) Israel (3) South Africa (2) Canada (2) Italy (2) Sweden (2) Spain (2) Ireland (1) Netherlands (1) New Zealand (1) Poland (1) Romania (1) Russia (1) Lithuania (1) Latvia (1) Japan (1) Australia (1) Georgia (1) Scotland (1) Estonia (1)
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  • Rozana Tech inc Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49
    Grande Prairie, Canada

    Services provided

    10% Web Development
    30% Custom Software Development
    25% Mobile App Development +3
    15% AI Development
    10% Low/No Code Development
    10% UX/UI Design

    Focus Areas

    25% JavaScript
    30% Python
    20% PHP +3
    10% Elixir
    10% Swift
    5% SQL

    Rozana Tech inc is a software development firm established in 2023. The company specializes in Custom Software Development and Mobile App Development, and is small.

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  • Axilsoft Limited Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Application Testing
    20% DevOps Managed Services +3
    20% E-Commerce Development
    20% Mobile App Development
    10% Low/No Code Development

    Focus Areas

    25% JavaScript
    25% AJAX
    25% PHP +1
    25% SQL

    Axilsoft Limited, a website development firm, was established in 2024. Located in Khulna, Bangladesh, the team focuses on Web Development and Mobile App Development.

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  • AppsXone IT Solutions Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    15% JavaScript
    25% C#
    25% SQL +2
    20% jquery
    15% ASP.NET

    AppsXone IT Solutions is an UX company launched in 2012. The team focuses on UX/UI Design and cloud consulting & SI and is based in Hyderabad, Pakistan.

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  • MoonSys Logotype

    MoonSys

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Cloud Consulting & SI
    25% Custom Software Development +1
    25% Mobile App Development

    Focus Areas

    10% JavaScript
    20% Kotlin
    20% PHP +3
    20% Python
    20% Swift
    10% Typescript

    MoonSys is a cloud consulting & SI company. They are headquartered in Sheridan, Wyoming and have small team of experts. Their services include cloud consulting & SI and Custom Software Development.

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  • Mappoptimist Technologies Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    28% AI Development
    20% Generative AI +2
    19% Custom Software Development
    18% Mobile App Development

    Focus Areas

    20% JavaScript
    20% Java
    20% Kotlin +2
    20% Python
    20% Swift

    Mappoptimist Technologies is an artificial intelligence development company. They are in New Delhi, India. Their team specializes in Artificial Intelligence and Generative AI.

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  • Anemoia Logotype

    Anemoia

    Not yet reviewed

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

    Services provided

    15% Web Development
    20% Mobile App Development
    15% Custom Software Development +7
    10% Application Testing
    10% DevOps Managed Services
    10% E-Commerce Development
    5% Graphic Design
    5% Product Design
    5% UX/UI Design
    5% Web Design

    Focus Areas

    20% JavaScript
    15% PHP
    15% Python +5
    15% Typescript
    10% ASP.NET
    10% HTML5
    10% SQL
    5% Redux

    Anemoia is a SEO agency. They are based in Wah Cantt, Pakistan. Their team specializes in Search Engine Optimization and Web Design.

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  • InsightSol Technologies Logotype

    InsightSol Technologies

    Not yet reviewed

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

    Services provided

    20% Web Development
    30% AI Development
    20% AI Consulting +2
    20% Mobile App Development
    10% Branding

    Focus Areas

    15% JavaScript
    20% Python
    15% jquery +10
    5% ASP
    5% ASP.NET
    5% C
    5% C#
    5% C++
    5% Java
    5% Kotlin
    5% Redux
    5% Typescript
    5% XML

    InsightSol Technologies is an AI development company. Launched in 2023, their team specializes in Artificial Intelligence and Web Development.

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  • Enginecy Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% Web Design
    10% Branding +6
    10% Email Marketing
    10% Graphic Design
    10% Media Planning & Buying
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    20% JavaScript
    20% PHP
    20% Python +4
    15% HTML5
    10% SQL
    10% Swift
    5% C++

    In Tampa, Florida and Abu Dhabi, United Arab Emirates, Enginecy is a small web design agency. The team focuses on Web Design and Web Development.

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  • IT CYBX LTD Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Cybersecurity
    20% Digital Strategy +3
    20% Graphic Design
    10% Pay Per Click
    10% Search Engine Optimization

    Focus Areas

    15% JavaScript
    60% PHP
    25% SQL

    IT CYBX LTD is a Digital Strategy company. Their team is headquartered in Islamabad, Pakistan and specializes in Digital Strategy and Graphic Design.

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  • Finesse Ink Logotype

    Finesse Ink

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Branding
    20% Product Design +2
    20% UX/UI Design
    20% Web Design

    Focus Areas

    15% JavaScript
    20% SQL
    15% Java +5
    10% ASP.NET
    10% Ember.js
    10% Python
    10% Redux
    10% Ruby

    Launched in 2022, Finesse Ink is a branding firm. The team offers Branding and Web Design.

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  • Nexenstial LLP Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    35% Custom Software Development
    15% ERP Consulting and SI +2
    15% IT Managed Services
    15% Mobile App Development

    Focus Areas

    15% JavaScript
    45% PHP
    20% AJAX +1
    20% SQL

    Nexenstial LLP is a custom software development firm. They were established in 2020 and offer Custom Software Development and Web Development.

    Read more
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  • Evolit Slovakia s.r.o. Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    10 - 49
    Poprad, Slovakia

    Services provided

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

    Focus Areas

    15% JavaScript
    30% Java
    20% C# +3
    15% ASP.NET
    10% SQL
    10% Typescript

    Evolit Slovakia s.r.o., an user experience agency, was founded in 2022. The company specializes in UX/UI Design and cloud consulting & SI, and is small.

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  • CodeSprint Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49
    Lahore, Pakistan

    Services provided

    15% Web Development
    15% Application Testing
    15% Custom Software Development +5
    15% Mobile App Development
    10% AI Development
    10% Microservices Architecture Services
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    20% Swift
    15% HTML5 +4
    15% Typescript
    10% Objective C
    10% Python
    10% SQL

    Launched in 2024, CodeSprint is a custom software development firm. Their services include Custom Software Development and Web Development.

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  • SoftUp Agency Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    15% JavaScript
    20% Python
    15% HTML5 +7
    15% Java
    10% Typescript
    5% C++
    5% Kotlin
    5% PHP
    5% SQL
    5% Swift

    SoftUp Agency is an IT strategy consulting company launched in 2023. In Anaheim, California and Amsterdam, Netherlands, the team focuses on IT strategy consulting and Custom Software Development.

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  • Weboapp Discovery Private Limited Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% Application Testing
    25% E-Commerce Development +2
    20% Application Management & Support
    15% Custom Software Development

    Focus Areas

    20% JavaScript
    40% Python
    15% AJAX +2
    15% Visual Basic
    10% Other programming & scripting languages

    Headquartered in Panchkula, India, Weboapp Discovery Private Limited is a small e-commerce development company. Their services include E-Commerce Development and Application Testing.

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  • Cleverise Tech Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    25% JavaScript
    55% Typescript
    15% HTML5 +1
    5% Redux

    Cleverise Tech is a Digital Strategy company based in Pune, India. Founded in 2022, the team specializes in Digital Strategy and Social Media Marketing.

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  • Ojas Technologies Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% Graphic Design +2
    20% Mobile App Development
    20% Search Engine Optimization

    Focus Areas

    15% JavaScript
    25% C#
    20% ASP.NET +3
    15% SQL
    15% Typescript
    10% HTML5

    Ojas Technologies is a SEO company. Established in 2020, the agency specializes in Search Engine Optimization and Graphic Design.

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  • TechLuminix Private Limited Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    15% JavaScript
    12% Typescript
    10% AJAX +11
    10% Java
    10% Kotlin
    10% jquery
    7% PHP
    7% SQL
    5% C++
    5% Swift
    3% Go
    2% ASP.NET
    2% HTML5
    2% Rust

    Digital Strategy company TechLuminix Private Limited is headquartered in Virar, India. They specialize in Digital Strategy and UX/UI Design and were established in 2024.

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  • RAM Digitech Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Chowchilla, CA

    Services provided

    20% Web Development
    20% Digital Strategy
    20% Search Engine Optimization +2
    20% UX/UI Design
    20% Web Design

    Focus Areas

    15% JavaScript
    20% HTML5
    20% Java +3
    15% C++
    15% PHP
    15% Python

    RAM Digitech is a small Digital Strategy company based in Chowchilla, California. The team offers Digital Strategy and Search Engine Optimization.

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  • Genetrix Builds Logotype

    Genetrix Builds

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Business Consulting
    20% Mobile App Development +2
    20% Product Design
    20% UX/UI Design

    Focus Areas

    15% JavaScript
    40% Other programming & scripting languages
    30% Python +1
    15% SQL

    Genetrix Builds is a small UX design company founded in 2023. Their team provides UX/UI Design and Product Design.

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  • SoTech Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    30% Search Engine Optimization
    20% Social Media Marketing +4
    10% Other Digital Marketing
    10% Web Design
    5% Graphic Design
    5% Mobile App Development

    Focus Areas

    15% JavaScript
    40% PHP
    15% ASP.NET +4
    10% ASP
    10% HTML5
    5% Java
    5% XML

    SoTech is a SEO company. They are in Houston, Texas and have small team of experts. Their services include Search Engine Optimization and Social Media Marketing.

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  • Vidnest Media Logotype

    Vidnest Media

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49

    Services provided

    25% Web Development
    25% Branding
    25% Pay Per Click +1
    25% Social Media Marketing

    Focus Areas

    10% JavaScript
    10% C
    10% C++ +10
    10% HTML5
    10% Java
    10% PHP
    10% Python
    5% ASP
    5% ASP.NET
    5% C#
    5% Ruby
    5% SQL
    5% XML

    Established in 2022, Vidnest Media is a small branding company headquartered in Trivandrum, India. Their team specializes in Branding and Social Media Marketing.

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  • ExcloLab Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Mobile App Development +4
    10% Digital Strategy
    10% IT Strategy Consulting
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    15% JavaScript
    30% PHP
    20% Kotlin +2
    20% Redux
    15% SQL

    Located in Semarang, Indonesia, ExcloLab is a small software development firm. Their services include Custom Software Development and Web Development.

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  • Genexys Labs Logotype

    Genexys Labs

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    15% JavaScript
    15% Python
    10% Go +6
    10% Java
    10% Kotlin
    10% PHP
    10% Redux
    10% SQL
    10% Typescript

    Genexys Labs is a web design company. The firm is located in Kathmandu, Nepal. Their team focuses on Web Design and UX/UI Design.

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    $400 Best for single-page applications or landing page $900 Best for company websites or dashboards $1,800 Best for multi-user platforms or SaaS projects

    Full-Stack Web Application Development

    At Genexys Labs, we specialize in building robust, scalable, and fast web applications tailored to your business needs. Our expert developers use technologies like React, Typescript, and Python to deliver modern solutions for startups, SMEs, and large enterprises.
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  • Cloudicon InfoTech Logotype

    Cloudicon InfoTech

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% CRM Consulting and SI
    20% Custom Software Development +2
    20% ERP Consulting and SI
    20% Mobile App Development

    Focus Areas

    15% JavaScript
    15% ASP.NET
    10% AJAX +9
    10% SQL
    10% Swift
    10% jquery
    5% C
    5% C#
    5% C++
    5% HTML5
    5% Kotlin
    5% Python

    Located in Columbus, Ohio and Lakemba, Australia, Cloudicon InfoTech is a CRM consulting and SI company. The team specializes in CRM consulting and SI and ERP consulting and SI.

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    $2,000 Early-stage startups, Small local businesses etc. $5,000 E-commerce retailers, Service provider, Consultant $12,500 Corporate enterprises, Healthcare companies etc.

    Web Design & Development (Custom & Responsive)

    We transform ideas into scalable digital solutions through 10+ years of expertise in strategy, human-centered design, and technical excellence. From user discovery to prototype validation, we build engaging, business-relevant products that drive growth and deliver measurable impact.
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  • SoftWeirdo Solutions Private Limited Logotype

    SoftWeirdo Solutions Private Limited

    Not yet reviewed

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

    Services provided

    25% Web Development
    50% Blockchain
    25% Mobile App Development

    Focus Areas

    10% JavaScript
    50% Other programming & scripting languages
    15% Python +3
    10% Redux
    10% Typescript
    5% HTML5

    Launched in 2022, SoftWeirdo Solutions Private Limited is a small Vadodara, India-based Blockchain company. Their team offers Blockchain and Web Development.

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  • Xentrolance Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    35% Blockchain
    20% AI Development +2
    15% Custom Software Development
    10% API Development

    Focus Areas

    15% JavaScript
    35% Rust
    20% Typescript +2
    15% Python
    15% UnrealScript

    Xentrolance is a Blockchain company headquartered in Miami, Florida. The team provides Blockchain and Web Development.

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  • Indovate Technologies Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    15% JavaScript
    20% Python
    15% Java +6
    15% Typescript
    10% HTML5
    10% jquery
    5% Go
    5% SQL
    5% XML

    Indovate Technologies Pvt Ltd is a custom software development firm. The agency is located in Latur, India. Their services include Custom Software Development and Web Development.

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  • AIERAC INC. Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% E-Commerce Development
    25% Low/No Code Development +1
    25% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% C++ +7
    10% HTML5
    10% Java
    10% Kotlin
    10% PHP
    10% SQL
    10% Swift
    10% jquery

    AIERAC INC. Is a web design agency. In Orlando, Florida, the agency focuses on Web Design and Web Development.

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  • Majstro Logotype

    Majstro

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% Custom Software Development +2
    20% DevOps Managed Services
    20% IT Strategy Consulting

    Focus Areas

    15% JavaScript
    15% Python
    15% Typescript +9
    10% Java
    10% Other programming & scripting languages
    5% C#
    5% Go
    5% PHP
    5% SQL
    5% Swift
    5% XML
    5% jquery

    Founded in 2025, Majstro is an IT strategy consulting company. The small team offers IT strategy consulting and cloud consulting & SI.

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  • Techverda Logotype

    Techverda

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49

    Services provided

    10% Web Development
    10% AI Development
    10% API Development +9
    10% AR/VR Development
    10% Application Testing
    10% Custom Software Development
    10% IT Strategy Consulting
    10% IoT Development
    5% AI Agents
    5% DevOps Managed Services
    5% Microservices Architecture Services
    5% UX/UI Design

    Focus Areas

    25% JavaScript
    30% C#
    15% PHP +3
    10% Python
    10% SQL
    10% Typescript

    IT strategy consulting company Techverda is based in Dubai, United Arab Emirates. Their services include IT strategy consulting and Custom Software Development.

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  • LAXIMA Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% AI Agents
    15% AI Consulting +5
    15% AI Development
    15% Custom Software Development
    15% Generative AI
    5% Application Testing
    5% BI & Big Data Consulting & SI

    Focus Areas

    20% JavaScript
    50% Python
    10% Other programming & scripting languages +2
    10% Rust
    10% Typescript

    Founded in 2023, LAXIMA is an AI company. Their services include Artificial Intelligence and AI Consulting.

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  • ASYNC Logotype

    ASYNC

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% AI Agents
    10% AI Consulting +7
    10% AI Development
    10% Call Center Services
    10% Custom Software Development
    10% E-Commerce Development
    10% Generative AI
    10% Mobile App Development
    10% Trucking

    Focus Areas

    25% JavaScript
    20% Swift
    15% Python +4
    10% Go
    10% Kotlin
    10% Rust
    10% SQL

    ASYNC is a software development company in Karachi, Pakistan. They specialize in Custom Software Development and Web Development.

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  • Million Hits Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    25% Web Design
    15% E-Commerce Development +5
    15% Search Engine Optimization
    10% Mobile App Development
    10% Pay Per Click
    10% Social Media Marketing
    5% Email Marketing

    Focus Areas

    25% JavaScript
    25% PHP
    20% AJAX +3
    10% HTML5
    10% SQL
    10% jquery

    Web design agency Million Hits was launched in 2015. The firm provides Web Design and Search Engine Optimization.

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  • VastDev Solutions Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    15% JavaScript
    65% PHP
    15% C# +1
    5% ASP.NET

    VastDev Solutions is a website development firm. Established in 2025, the firm specializes in Web Development and Mobile App Development.

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  • FiniteLOOP Logotype

    FiniteLOOP

    Not yet reviewed

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

    Services provided

    20% Web Development
    40% E-Commerce Development
    20% Custom Software Development +2
    10% AI Development
    10% Mobile App Development

    Focus Areas

    15% JavaScript
    10% HTML5
    10% Kotlin +7
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% SQL
    10% Swift
    10% jquery
    5% Typescript

    FiniteLOOP is an e-commerce development company based in Dubai, United Arab Emirates. They focus on E-Commerce Development and Custom Software Development.

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  • YourProductMatters INC Logotype

    YourProductMatters INC

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% IT Managed Services
    20% Performance Marketing +4
    10% Custom Software Development
    10% IT Staff Augmentation
    10% Staffing
    10% Web Design

    Focus Areas

    20% JavaScript
    25% HTML5
    25% jquery +2
    20% PHP
    10% SQL

    Small IT managed services company YourProductMatters INC, is headquartered in Plano, Texas. The team focuses on IT managed services and Performance Marketing.

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  • Ventvert Pvt Ltd Logotype

    Ventvert Pvt Ltd

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49

    Services provided

    25% Web Development
    25% Mobile App Development
    15% Social Media Marketing +4
    10% AI Agents
    10% Custom Software Development
    10% Digital Strategy
    5% Logo

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% HTML5 +8
    10% Java
    10% PHP
    10% Python
    10% SQL
    10% Visual Basic
    10% XML
    5% C#
    5% C++

    Launched in 2025, Ventvert Pvt Ltd is a web development company. The company focuses on Web Development and Mobile App Development, and is small.

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  • Appsinnovate Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Cairo, Egypt

    Services provided

    10% Web Development
    20% Custom Software Development
    20% Mobile App Development +5
    10% AR/VR Development
    10% Application Management & Support
    10% Mobile & App Marketing
    10% Other Application Development
    10% UX/UI Design

    Focus Areas

    13% JavaScript
    13% Java
    13% Objective C +7
    13% PHP
    13% Swift
    11% SQL
    6% ASP.NET
    6% C#
    6% Python
    6% Ruby

    Appsinnovate is a software development firm. Located in Cairo, Egypt, the agency was established in 2012. Their team focuses on Custom Software Development and Mobile App Development.

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  • Noshway Logotype

    Noshway

    Not yet reviewed

    $1,000+
    Undisclosed
    10 - 49

    Services provided

    10% Web Development
    30% E-Commerce Development
    30% Mobile App Development +3
    10% AR/VR Development
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    13% JavaScript
    19% AJAX
    13% Java +5
    13% Redux
    13% SQL
    13% Visual Basic
    10% Kotlin
    6% Ember.js

    Noshway is a small Berkeley, California-based application development firm. Their services include Mobile App Development and E-Commerce Development.

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  • Reinier Martin UX Design Studio Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    2 - 9
    Utrecht, Netherlands

    Services provided

    10% Web Development
    10% Custom Software Development
    10% Digital Engineering +7
    10% Digital Strategy
    10% E-Commerce Development
    10% Enterprise App Modernization
    10% Low/No Code Development
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    45% HTML5
    25% Other programming & scripting languages +1
    10% jquery

    Established in 2017, Reinier Martin UX Design Studio is an UX design agency. Their services include UX/UI Design and Digital Strategy.

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  • Software Development Resources Inc. Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Mobile App Development +5
    15% AR/VR Development
    10% Custom Software Development
    5% AI Development
    5% Application Management & Support
    5% Blockchain

    Focus Areas

    11% JavaScript
    11% PHP
    11% Perl +13
    7% AJAX
    5% ASP.NET
    5% C#
    5% C++
    5% Java
    5% Objective C
    5% Other programming & scripting languages
    5% Python
    5% Ruby
    5% SQL
    5% Swift
    5% Visual Basic
    5% XML

    Software Development Resources Inc. Is an e-commerce development firm established in 2011. The agency focuses on E-Commerce Development and Mobile App Development, and is small.

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  • CreuLab, LLC Logotype

    CreuLab, LLC

    Not yet reviewed

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

    Services provided

    25% Web Development
    45% Web Design
    15% Content Marketing +1
    15% Search Engine Optimization

    Focus Areas

    33% JavaScript
    33% PHP
    24% Other programming & scripting languages +1
    10% SQL

    CreuLab, LLC is a web design agency. They were founded in 2018 and offer Web Design and Web Development.

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  • Gavin Potter Logotype

    Not yet reviewed

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

    Services provided

    33% Web Development
    34% Custom Software Development
    33% Web Design

    Focus Areas

    25% JavaScript
    25% ASP.NET
    25% C# +1
    25% SQL

    Gavin Potter is a custom software development firm. Their small team is based in Edinburgh, Scotland. Their services include Custom Software Development and Web Design.

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  • Pranjo Tec. Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    Freelancer
    Jaipur, India

    Services provided

    20% Web Development
    20% Application Management & Support
    20% Custom Software Development +2
    20% E-Commerce Development
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    50% PHP
    20% Python +1
    10% AJAX

    Pranjo Tec. Is a custom software development firm. The team offers Custom Software Development and Application Management & Support and is headquartered in Jaipur, India and India.

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  • AppVelocity Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    60% Mobile App Development
    25% Custom Software Development

    Focus Areas

    10% JavaScript
    20% Kotlin
    20% Objective C +3
    20% Python
    20% Swift
    10% PHP

    Established in 2018, AppVelocity is a small Montreal, Canada-based mobile app development company. Their services include Mobile App Development and Custom Software Development.

    Read more
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  • Creative Spark Solutions Logotype

    Creative Spark Solutions

    Not yet reviewed

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

    Services provided

    15% Web Development
    35% Custom Software Development
    35% Mobile App Development +1
    15% E-Commerce Development

    Focus Areas

    10% JavaScript
    30% C#
    20% ASP.NET +3
    20% PHP
    10% Ruby
    10% SQL

    Software development firm Creative Spark Solutions is in Delhi, India. They provide Custom Software Development and Mobile App Development and were founded in 2012.

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  • Infinity Genesis Solutions Logotype

    Infinity Genesis Solutions

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    2 - 9

    Services provided

    10% Web Development
    14% Low/No Code Development
    10% Custom Software Development +13
    10% Mobile App Development
    5% API Development
    5% Application Testing
    5% DevOps Managed Services
    5% E-Commerce Development
    5% Enterprise App Modernization
    5% Graphic Design
    5% Logo
    5% Microservices Architecture Services
    5% Other Application Development
    5% Product Design
    5% UX/UI Design
    1% Web Design

    Focus Areas

    10% JavaScript
    15% Python
    10% Other programming & scripting languages +12
    10% PHP
    5% AJAX
    5% Go
    5% HTML5
    5% Kotlin
    5% Objective C
    5% Ruby
    5% Rust
    5% SQL
    5% Swift
    5% Typescript
    5% jquery

    Custom software development company Infinity Genesis Solutions is based in Lahore, Pakistan. They focus on Custom Software Development and Mobile App Development.

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  • Morgan Code Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Bobovje, Croatia

    Services provided

    10% Web Development
    20% Custom Software Development
    20% Mobile App Development +4
    20% UX/UI Design
    15% E-Commerce Development
    10% Other Application Development
    5% IT Strategy Consulting

    Focus Areas

    10% JavaScript
    30% Other programming & scripting languages
    20% PHP +3
    20% Python
    10% Go
    10% SQL

    Morgan Code is an UX design agency. Launched in 2021, the firm focuses on UX/UI Design and Custom Software Development.

    Read more
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  • Tech9logy Creators Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% CRM Consulting and SI
    10% E-Commerce Development +11
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    5% Branding
    5% Business Consulting
    5% Conversion Optimization
    5% IT Managed Services
    5% Logo
    5% Social Media Marketing
    5% UX/UI Design
    5% Web Design

    Focus Areas

    10% JavaScript
    20% Other programming & scripting languages
    15% PHP +8
    10% Java
    10% Ruby
    10% SQL
    5% ASP
    5% ASP.NET
    5% Apex
    5% C#
    5% C++

    Tech9logy Creators is an e-commerce development firm. They are located in Faridabad, India and have small team of experts. Their services include E-Commerce Development and Mobile App Development.

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

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We evaluate service providers using a structured methodology that combines:

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

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Ability to deliver
Focus
Clutch Leaders Matrix

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

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

List of the Top 15 JavaScript Development Companies

  1. ImageX Logotype

    ImageX

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

    Ability to deliver

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

    Service focus

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

    xfive

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

    Ability to deliver

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

    Service focus

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

    Brainhub

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

    Ability to deliver

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

    Service focus

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

    The Software House

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

    Ability to deliver

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

    Service focus

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

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    Airdev

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

    Ability to deliver

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

    Service focus

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

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

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

    Lizard Global

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

    Ability to deliver

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

    Service focus

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

    PopArt Studio

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

    Ability to deliver

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

    Service focus

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

    Softonix

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

    Ability to deliver

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

    Service focus

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

    Scopic

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

    Ability to deliver

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

    Service focus

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

    GeekyAnts

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

    Ability to deliver

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

    Service focus

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

    INOXOFT

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

    Ability to deliver

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

    Service focus

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

    HTMLPanda

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

    Ability to deliver

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

    Service focus

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

    SpdLoad

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

    Ability to deliver

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

    Service focus

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

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

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

    PowerGate Software

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

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

    Toptal

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

    Ability to deliver

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

    Service focus

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

    Arcanys

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

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

    Blazity

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

    Ability to deliver

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

    Service focus

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

    Experion Technologies

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

    Ability to deliver

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

    Service focus

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

    Human Made

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

    Ability to deliver

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

    Service focus

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

    Vincit

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

    Ability to deliver

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

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

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

    Flowout

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

    Ability to deliver

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

    Service focus

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

    Sigma Software Group

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

    Ability to deliver

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

    Service focus

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

    Merixstudio

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

    Ability to deliver

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

    Service focus

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

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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