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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 9, 2026
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15 Leaders 15 Contenders

21,638 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Featured

    What are Featured Providers?

    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

    4.9 88 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

    50% Web Development
    50% Custom Software Development

    Focus Areas

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

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

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    Reviews mention Knowledgeable

    The client expressed high satisfaction with the company's knowledge and expertise, particularly in React Native development. They noted the developer and project manager's impressive understanding of the technology, consistently seeking optimal solutions rather than the quickest fixes. Communication was highlighted as effective, with the team being responsive and helpful throughout the project. Overall, the feedback reflects a positive sentiment regarding the company's knowledgeable approach to project execution.
    • UI/UX Design for IT Services Company
      5.0 Jul 6, 2021

      With Digis, we also had the feeling that they knew what they were doing and how to do it. Every next step was planned from the beginning. If something didn't work in line with our processes, we could readjust it.

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    • Mobile App Development for Web Application Manager
      5.0 Jul 29, 2020

      I was impressed by the knowledge the developer and project manager had about the react native and how it functions, I liked that they were always looking for the best solutions (not only implement what's faster and simpler). Also, we were satisfied with the productivity of the developer.

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    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
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  • ParsBiz Logotype

    4.5 1 review
    $250,000+
    $300+ / hr
    50 - 249
    London, England

    Services provided

    10% Web Development
    10% Advertising
    10% Branding +7
    10% Content Marketing
    10% Cybersecurity
    10% Email Marketing
    10% Mobile App Development
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    10% Ember.js
    10% Java +7
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% Redux
    10% Swift
    10% Typescript
    10% UnrealScript

    ParsBiz offers social media marketing services to enhance brand awareness, increase followers, and drive website traffic. Clients commend their impressive project management and the ability to craft campaigns that resonate emotionally with audiences. While generally satisfied, some feedback highlights the need for more detailed reporting and quicker response times, as well as the potential to explore emerging platforms for broader outreach.

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  • Nexdin Software Solutions (Pvt) LTD Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    ජා-ඇළ, Sri Lanka

    Services provided

    15% Web Development
    50% Mobile App Development
    25% Search Engine Optimization +1
    10% AR/VR Development

    Focus Areas

    33% JavaScript
    34% Other programming & scripting languages
    33% C#

    Launched in 2019, Nexdin Software Solutions (Pvt) LTD is an application development firm. The small team specializes in Mobile App Development and Search Engine Optimization.

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  • CodeFinesse Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    35% Mobile App Development
    15% Custom Software Development +4
    15% IT Strategy Consulting
    10% UX/UI Design
    10% Web Design
    5% Enterprise App Modernization

    Focus Areas

    25% JavaScript
    30% PHP
    25% Swift +3
    10% Java
    5% Objective C
    5% SQL

    CodeFinesse is a mobile application development company. Located in Novi Sad, Serbia, the team offers Mobile App Development and IT strategy consulting.

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  • Red Feather Solutions Logotype

    Red Feather Solutions

    5.0 1 review
    Undisclosed
    Undisclosed
    1,000 - 9,999

    Services provided

    10% Web Development
    15% Branding
    15% Content Marketing +5
    15% Search Engine Optimization
    15% Social Media Marketing
    10% Graphic Design
    10% Logo
    10% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% Ember.js +7
    10% Java
    10% Objective C
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% UnrealScript
    10% Visual Basic

    Red Feather Solutions specializes in setting up e-commerce stores, including Shopify store setups, product catalog organization, payment gateway integration, and checkout process optimization. Reviews highlight their excellent project management, timely deliveries, and strong commitment to customer satisfaction, resulting in increased conversion rates and enhanced user engagement for clients. The company is highly recommended for its professionalism and customer-centric approach.

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  • Weeteam France Logotype

    Weeteam France

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    50 - 249

    Services provided

    20% Web Development
    20% IT Strategy Consulting
    15% E-Commerce Development +4
    15% Mobile App Development
    10% Digital Strategy
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    40% PHP
    10% AJAX +3
    10% Objective C
    10% SQL
    10% Swift

    Weeteam France is a midsize Paris, France-based IT strategy consulting company. The team focuses on IT strategy consulting and Web Development.

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  • Arias & Thompson Logotype

    Arias & Thompson

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    Freelancer

    Services provided

    30% Web Development
    30% Web Design
    10% Content Marketing +3
    10% Conversion Optimization
    10% Digital Strategy
    10% Search Engine Optimization

    Focus Areas

    60% JavaScript
    40% PHP

    Arias & Thompson is a web design company. In Tallinn, Estonia and Salford, England, the company was founded in 2017. Their services include Web Design and Web Development.

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  • Samuel Nee Web Development and Consulting Logotype

    Not yet reviewed

    $25,000+
    Undisclosed
    Freelancer
    Los Angeles, CA

    Services provided

    40% Web Development
    30% Mobile App Development
    15% UX/UI Design +1
    15% Web Design

    Focus Areas

    40% JavaScript
    30% ASP.NET
    15% PHP +1
    15% SQL

    Located in Los Angeles, California, Samuel Nee Web Development and Consulting is a website development firm. They specialize in Web Development and Mobile App Development and were founded in 1998.

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  • Butterfield Technology Logotype

    Butterfield Technology

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    Freelancer

    Services provided

    40% Web Development
    50% E-Commerce Development
    5% Cloud Consulting & SI +1
    5% Search Engine Optimization

    Focus Areas

    40% JavaScript
    40% PHP
    10% AJAX +1
    10% XML

    Butterfield Technology is an e-commerce development company. They are based in London, England and have small team of experts. Their services include E-Commerce Development and Web Development.

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  • Arden Digital Logotype

    Arden Digital

    Not yet reviewed

    $25,000+
    $150 - $199 / hr
    Freelancer

    Services provided

    30% Web Development
    30% Mobile App Development
    20% UX/UI Design +1
    20% Web Design

    Focus Areas

    60% JavaScript
    25% Redux
    10% Java +1
    5% Swift

    Arden Digital, an application development firm, is based in Los Angeles, California. They focus on Mobile App Development and Web Development.

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  • CRAZY24X7 IT RESEARCH AND DEVELOPMENT Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Patna, India

    Services provided

    30% Web Development
    20% Web Design
    15% Mobile App Development +8
    5% Content Marketing
    5% Digital Strategy
    5% Email Marketing
    5% Mobile & App Marketing
    5% Other Application Development
    5% Social Media Marketing
    3% Cybersecurity
    2% Affiliate Marketing

    Focus Areas

    10% JavaScript
    30% PHP
    20% Python +4
    15% SQL
    10% AJAX
    10% Visual Basic
    5% Kotlin

    CRAZY24X7 IT RESEARCH AND DEVELOPMENT is a website development firm. The team is located in Patna, India and Ahmedabad, India, and their services include Web Development and Web Design.

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  • Digital Confection Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    Freelancer
    Arlington, VA

    Services provided

    30% Web Development
    30% Web Design
    15% Graphic Design +3
    10% Custom Software Development
    10% UX/UI Design
    5% Mobile App Development

    Focus Areas

    50% JavaScript
    50% PHP

    Small web design company Digital Confection, is located in Arlington, Virginia. Their services include Web Design and Web Development.

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  • PYYNE Digital Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    50 - 249
    New York, NY

    Services provided

    20% Web Development
    35% Custom Software Development
    20% Cloud Consulting & SI +2
    15% AI Development
    10% IT Strategy Consulting

    Focus Areas

    20% JavaScript
    30% Typescript
    20% Python +3
    15% Go
    10% Java
    5% Ruby

    PYYNE Digital is a software development firm established in 2020. Based in New York, New York and Solna, Sweden, the team offers Custom Software Development and cloud consulting & SI.

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  • Rhibhus Infosystems Private Limited Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% Mobile App Development
    10% API Development +11
    10% Custom Software Development
    10% Generative AI
    10% Microservices Architecture Services
    7% Wearable App Development
    5% AI Consulting
    5% AI Development
    5% Application Management & Support
    3% Digital Engineering
    3% IoT Development
    1% Cloud Consulting & SI
    1% Cybersecurity

    Focus Areas

    25% JavaScript
    15% Python
    15% SQL +6
    10% HTML5
    10% Typescript
    10% jquery
    5% ASP.NET
    5% Kotlin
    5% Redux

    Rhibhus Infosystems Private Limited is a web development firm. They are in Bengaluru, India and have midsize team of experts. Their services include Web Development and Mobile App Development.

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  • Webackit Solutions Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    Freelancer
    București, Romania

    Services provided

    30% Web Development
    50% Custom Software Development
    10% AI Development +2
    5% Graphic Design
    5% Web Design

    Focus Areas

    50% JavaScript
    25% PHP
    10% HTML5 +2
    10% Python
    5% jquery

    Custom software development firm Webackit Solutions was founded in 2021. The team offers Custom Software Development and Web Development and is located in București, Romania.

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  • Shivohm Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Gandhinagar, India

    Services provided

    20% Web Development
    20% Pay Per Click
    20% Search Engine Optimization +3
    20% Social Media Marketing
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    20% JavaScript
    30% ASP.NET
    20% Python +2
    20% SQL
    10% C

    Shivohm, a social media marketing firm, was established in 2018. Located in Gandhinagar, India, the team offers Social Media Marketing and Search Engine Optimization.

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  • UXCentury Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    50 - 249
    Yerevan, Armenia

    Services provided

    25% Web Development
    25% Mobile App Development
    20% AI Development +2
    20% Custom Software Development
    10% API Development

    Focus Areas

    15% JavaScript
    15% Java
    15% PHP +5
    15% Python
    15% SQL
    15% Typescript
    5% C#
    5% C++

    UXCentury is a midsize web development firm located in Yerevan, Armenia. The team provides Web Development and Mobile App Development.

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  • Simplex Logotype

    Simplex

    Not yet reviewed

    $1,000+
    Undisclosed
    50 - 249

    Services provided

    15% Web Development
    15% API Development
    15% Blockchain +4
    15% Cloud Consulting & SI
    15% Mobile App Development
    15% UX/UI Design
    10% Branding

    Focus Areas

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

    Simplex is an user experience design company. Their team is headquartered in Тоshkent, Uzbekistan and Tashkent, Uzbekistan and provides UX/UI Design and cloud consulting & SI.

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  • EcombitHub Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    50 - 249
    Newport Beach, CA

    Services provided

    20% Web Development
    40% Custom Software Development
    20% E-Commerce Development +1
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    20% PHP
    20% Python +4
    10% HTML5
    10% Other programming & scripting languages
    10% SQL
    10% jquery

    Launched in 2023, EcombitHub is a custom software development company. The company focuses on Custom Software Development and Web Development.

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  • ABF Programming Logotype

    Not yet reviewed

    $25,000+
    $25 - $49 / hr
    50 - 249
    Larnaca, Cyprus

    Services provided

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

    Focus Areas

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

    ABF Programming is a midsize custom software development company. They provide Custom Software Development and Web Development and were launched in 2018.

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  • A Cube Creative Factory Logotype

    A Cube Creative Factory

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    50 - 249

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Graphic Design +2
    20% Mobile App Development
    20% Search Engine Optimization

    Focus Areas

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

    A Cube Creative Factory is a SEO services firm launched in 2015. Located in Lahore, Pakistan, the team specializes in Search Engine Optimization and Graphic Design.

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  • Unicore Group Logotype

    Unicore Group

    5.0 1 review
    $10,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    15% Web Development
    25% Mobile App Development
    25% Social Media Marketing +2
    25% Staffing
    10% Low/No Code Development

    Focus Areas

    25% JavaScript
    30% Other programming & scripting languages
    20% HTML5 +2
    20% Redux
    5% Elixir

    Unicore Group offers comprehensive services including mobile app development, backend and frontend design, and marketing portfolio creation. Overall feedback highlights Unicore Group's professionalism, timely delivery, and client-oriented management. Clients appreciate their ability to provide end-to-end solutions and continuous 24/7 support.

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  • Reavdev Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49
    Cape Town, South Africa

    Services provided

    20% Web Development
    20% Branding
    20% Graphic Design +2
    20% IT Managed Services
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    30% Typescript
    20% SQL +2
    15% AJAX
    15% Redux

    Reavdev is a branding agency. The firm is in Cape Town, South Africa. Their services include Branding and Graphic Design.

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  • ADUNIVERSAL STUDIO Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    60% Mobile App Development
    10% AR/VR Development +1
    10% Mobile & App Marketing

    Focus Areas

    33% JavaScript
    33% C#
    17% PHP +1
    17% SQL

    ADUNIVERSAL STUDIO is a Surat, India-based mobile app development firm. They provide Mobile App Development and Web Development and were established in 2017.

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  • Datta Bane Logotype

    Datta Bane

    Not yet reviewed

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

    Services provided

    33% Web Development
    34% Custom Software Development
    33% Mobile App Development

    Focus Areas

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

    Datta Bane is a custom software development company. The Almaty, Kazakhstan-based agency was launched in 2022. Their services include Custom Software Development and Web Development.

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  • Peartech Solutions Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    15% Mobile App Development
    15% Robotics Process Automation +6
    10% AR/VR Development
    10% Custom Software Development
    10% IT Managed Services
    10% Low/No Code Development
    5% E-Commerce Development
    5% IT Strategy Consulting

    Focus Areas

    33% JavaScript
    20% Python
    14% SQL +3
    13% C++
    13% HTML5
    7% Other programming & scripting languages

    Founded in 2022, Peartech Solutions Pvt Ltd is a software development company. Their team offers Custom Software Development and Web Development.

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  • Tillitsdone Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49
    Tambon Samet, Thailand

    Services provided

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

    Focus Areas

    33% JavaScript
    34% Typescript
    33% Go

    Tillitsdone is an UX agency. The team is based in Tambon Samet, Thailand, and their services include UX/UI Design and Custom Software Development.

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  • TheTISA Logotype

    TheTISA

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49

    Services provided

    20% Web Development
    20% Corporate Training & Coaching
    20% Mobile App Development +2
    20% UX/UI Design
    20% Web Design

    Focus Areas

    33% JavaScript
    34% HTML5
    33% Java

    TheTISA is a web design company. They were established in 2020, and their services include Web Design and UX/UI Design.

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  • IMPETROSYS Logotype

    5.0 1 review
    $1,000+
    $25 - $49 / hr
    10 - 49
    Indore, India

    Services provided

    15% Web Development
    35% Mobile App Development
    15% Low/No Code Development +5
    10% Custom Software Development
    10% E-Commerce Development
    5% CRM Consulting and SI
    5% DevOps Managed Services
    5% Enterprise App Modernization

    Focus Areas

    10% JavaScript
    30% Kotlin
    20% Other programming & scripting languages +6
    20% Swift
    12% SQL
    4% Redux
    2% PHP
    1% Python
    1% Typescript

    Seasoned IT Professional | Driving Innovation & Efficiency in Technology Solutions  IMPETROSYS mission is to empower businesses and organisations through innovative and reliable technology

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  • Osiltec Infotech Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Web Design
    10% CRM Consulting and SI +6
    10% Content Marketing
    10% Email Marketing
    10% Mobile & App Marketing
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    25% JavaScript
    50% PHP
    25% Python

    Founded in 2017, Osiltec Infotech is a small web design agency located in Hyderabad, India. Their team specializes in Web Design and Content Marketing.

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  • CodeSphere Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Custom Software Development
    20% Mobile App Development +3
    10% E-Commerce Development
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% C# +7
    10% C++
    10% Ember.js
    10% Java
    10% Kotlin
    10% Objective C
    10% Python
    10% Redux

    Launched in 2023, CodeSphere is a custom software development firm. The agency offers Custom Software Development and Web Development.

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  • Emerald Soft Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% CRM Consulting and SI
    20% E-Commerce Development +2
    20% Mobile App Development
    20% Sales Outsourcing

    Focus Areas

    15% JavaScript
    25% PHP
    20% Kotlin +2
    20% SQL
    20% Swift

    Founded in 2020, Emerald Soft is a small Karachi, Pakistan-based CRM consulting and SI company. Their services include CRM consulting and SI and Web Development.

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    More responsive than most other service providers

    Emerald Soft is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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  • Kibris Order Ltd. Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Custom Software Development
    25% Mobile App Development +1
    25% Product Design

    Focus Areas

    10% JavaScript
    20% Typescript
    10% ASP.NET +6
    10% Java
    10% Kotlin
    10% Objective C
    10% Python
    10% Redux
    10% Swift

    Kibris Order Ltd. Is a Product Design company. Established in 2017, their team provides Product Design and Custom Software Development.

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  • IZZZIO Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    Dubai, United Arab Emirates

    Services provided

    15% Web Development
    25% Blockchain
    20% E-Commerce Development +4
    15% Custom Software Development
    10% AR/VR Development
    10% Mobile App Development
    5% Web Design

    Focus Areas

    26% JavaScript
    26% Python
    11% Other programming & scripting languages +6
    11% SQL
    6% Kotlin
    5% C++
    5% PHP
    5% Swift
    5% Typescript

    IZZZIO is a Blockchain company. In Dubai, United Arab Emirates, the agency provides Blockchain and E-Commerce Development.

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  • NEVO Logotype

    NEVO

    5.0 1 review
    $5,000+
    $50 - $99 / hr
    2 - 9

    Services provided

    25% Web Development
    25% Custom Software Development
    25% E-Commerce Development +3
    10% AI Development
    10% IT Strategy Consulting
    5% Other Application Development

    Focus Areas

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

    We specialize in a wide range of services, including software and web development, IT consultations, business automation, and ecommerce development. Our expert team leverages cutting-edge

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  • Essence Tech Labs Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% Custom Software Development
    15% Mobile App Development +6
    10% Content Marketing
    10% E-Commerce Development
    10% IoT Development
    10% Search Engine Optimization
    10% UX/UI Design
    5% Social Media Marketing

    Focus Areas

    24% JavaScript
    24% PHP
    22% Kotlin +2
    18% Redux
    12% AJAX

    Custom software development company Essence Tech Labs is based in Toronto, Canada and Toronto, Canada. Founded in 2021, the team focuses on Custom Software Development and Web Development.

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  • LuminateOne Logotype

    Not yet reviewed

    $25,000+
    $200 - $300 / hr
    10 - 49
    Matamata, New Zealand

    Services provided

    10% Web Development
    20% E-Commerce Development
    15% IT Strategy Consulting +10
    11% Low/No Code Development
    10% Custom Software Development
    10% Enterprise App Modernization
    10% Mobile App Development
    5% Business Consulting
    3% CRM Consulting and SI
    2% Cloud Consulting & SI
    2% UX/UI Design
    1% Document Digitization & Management
    1% Web Design

    Focus Areas

    20% JavaScript
    25% PHP
    25% SQL +2
    15% C++
    15% Python

    LuminateOne is a software development firm. They provide Custom Software Development and E-Commerce Development and are in Matamata, New Zealand.

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  • Mavsketch Logotype

    Mavsketch

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Custom Software Development
    15% Mobile App Development +8
    10% CRM Consulting and SI
    10% E-Commerce Development
    10% IoT Development
    5% Ecommerce Marketing
    5% Mobile & App Marketing
    5% Search Engine Optimization
    5% UX/UI Design
    5% Web Design

    Focus Areas

    30% JavaScript
    15% HTML5
    15% Typescript +6
    10% Other programming & scripting languages
    10% Redux
    5% AJAX
    5% Kotlin
    5% Swift
    5% jquery

    Mavsketch is a software development company. They provide Custom Software Development and Mobile App Development and are based in Dubai, United Arab Emirates.

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  • Semicolon Solution Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    50% Custom Software Development
    15% Mobile App Development +2
    10% Low/No Code Development
    10% UX/UI Design

    Focus Areas

    30% JavaScript
    35% HTML5
    30% Typescript +1
    5% Other programming & scripting languages

    Semicolon Solution, a software development firm, is headquartered in Surat, India. Their services include Custom Software Development and Web Development.

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  • UXM Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% E-Commerce Development
    15% Mobile App Development +6
    10% AR/VR Development
    10% Business Consulting
    10% Custom Software Development
    10% Digital Strategy
    10% Low/No Code Development
    10% Social Media Marketing

    Focus Areas

    44% JavaScript
    17% AJAX
    17% Typescript +2
    11% HTML5
    11% Other programming & scripting languages

    UXM, a web development company, is based in Bengaluru, India. Their services include Web Development and Mobile App Development.

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  • Rewa Soft Logotype

    Rewa Soft

    Not yet reviewed

    $1,000+
    Undisclosed
    10 - 49

    Services provided

    10% Web Development
    20% Branding
    20% Mobile App Development +4
    20% Search Engine Optimization
    10% Content Marketing
    10% Logo
    10% Low/No Code Development

    Focus Areas

    15% JavaScript
    15% AJAX
    15% PHP +4
    15% Python
    15% SQL
    15% Typescript
    10% Other programming & scripting languages

    Rewa Soft is a branding firm. The team is located in Kathmandu, Nepal, and their services include Branding and Search Engine Optimization.

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  • Exavibes Services Private Limited Logotype

    4.5 1 review
    $1,000+
    < $25 / hr
    10 - 49
    Mumbai, India

    Services provided

    10% Web Development
    20% Mobile App Development
    10% E-Commerce Development +17
    10% IoT Development
    7% Search Engine Optimization
    5% Application Management & Support
    5% Application Testing
    5% Custom Software Development
    5% Mobile & App Marketing
    3% Digital Strategy
    3% Email Marketing
    3% Social Media Marketing
    2% AI Development
    2% Affiliate Marketing
    2% Content Marketing
    2% Conversion Optimization
    2% Pay Per Click
    2% Wearable App Development
    1% AR/VR Development
    1% Blockchain

    Focus Areas

    20% JavaScript
    20% PHP
    10% AJAX +7
    10% ASP.NET
    10% Java
    10% Typescript
    8% Kotlin
    5% Swift
    5% XML
    2% Redux

    Exavibes Services Private Limited specializes in mobile application development for Android and iOS platforms. Reviews highlight their strong project management, effective communication, and knowledgeable team. Clients appreciate their dedication to deadlines and proactive communication, resulting in successful project outcomes and increased revenue.

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  • ZAMH Technologies LLC Logotype

    5.0 1 review
    $10,000+
    $100 - $149 / hr
    10 - 49
    New York, NY

    Services provided

    20% Web Development
    20% AI Development
    20% Mobile App Development +3
    20% UX/UI Design
    10% AR/VR Development
    10% Custom Software Development

    Focus Areas

    11% JavaScript
    11% ASP.NET
    11% C# +7
    11% HTML5
    11% PHP
    11% Python
    11% Rust
    11% SQL
    6% C++
    6% Typescript

    ZAMH Technologies LLC specializes in Website Development, Web Design, and Web Programming, providing tailored online development solutions. Their reviews highlight a commitment to delivering high-quality projects on time, with a strong focus on user engagement and satisfaction. Clients particularly appreciate their innovative approach, reliability, and customer-centric service, though improvements in communication documentation and change management have been suggested.

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  • OutsourcingDev Logotype

    Not yet reviewed

    $25,000+
    $25 - $49 / hr
    50 - 249
    Villa Allende, Argentina

    Services provided

    10% Web Development
    50% BI & Big Data Consulting & SI
    20% IT Staff Augmentation +2
    10% Custom Software Development
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    30% SQL
    10% C# +6
    10% Go
    10% Java
    10% Other programming & scripting languages
    10% Python
    5% PHP
    5% Ruby

    Big data analytics company OutsourcingDev was established in 2018. The firm specializes in BI & big data consulting & SI and IT staff augmentation, and is midsize.

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  • SkyFig Technologies Logotype

    4.0 1 review
    $5,000+
    $300+ / hr
    2 - 9
    Ilorin, Nigeria

    Services provided

    20% Web Development
    20% Mobile App Development
    15% E-Commerce Development +4
    15% Search Engine Optimization
    10% Low/No Code Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    30% PHP
    15% Python +5
    15% SQL
    10% AJAX
    10% Kotlin
    5% C++
    5% Typescript

    SkyFig Technologies specializes in Website Development, providing services that include Web Design and Web Programming. Clients commend their impressive client interaction and project management, highlighting their ability to deliver satisfactory results swiftly. While their overall performance is praised, a slight improvement in graphics design is suggested.

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  • Onbyz Technologies LLC Logotype

    Onbyz Technologies LLC

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% API Development
    10% Application Testing +7
    10% Custom Software Development
    10% E-Commerce Development
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    20% Python
    15% HTML5 +5
    15% SQL
    10% Other programming & scripting languages
    10% PHP
    10% Swift
    10% jquery

    Onbyz Technologies LLC, a SEO company, is in Dubai, United Arab Emirates and Thiruvananthapuram, India. The team offers Search Engine Optimization and Pay Per Click.

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  • EACHSTAPP Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    30% Custom Software Development
    30% Mobile App Development +2
    5% UX/UI Design
    5% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP.NET +7
    10% C#
    10% Go
    10% Kotlin
    10% Python
    10% Redux
    10% SQL
    10% Typescript

    Founded in 2022, EACHSTAPP is a custom software development company. The firm provides Custom Software Development and Web Development.

    Read more
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  • SG Web Builder by 8Clicks Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Web Design
    15% Search Engine Optimization +6
    10% Custom Software Development
    10% Digital Strategy
    10% E-Commerce Development
    10% Pay Per Click
    10% Social Media Marketing
    5% Mobile App Development

    Focus Areas

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

    SG Web Builder by 8Clicks is a Singapore-based web design company. Their services include Web Design and Search Engine Optimization.

    Read more

    More responsive than most other service providers

    SG Web Builder by 8Clicks is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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  • Shubbak Technologies Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Dubai, United Arab Emirates

    Services provided

    20% Web Development
    40% Custom Software Development
    40% Mobile App Development

    Focus Areas

    10% JavaScript
    50% Python
    20% Typescript +2
    10% AJAX
    10% PHP

    Shubbak Technologies is a web development company specializing in custom website development and web application development. Reviews highlight their commitment to user-centric design and successful project management, with 100% of feedback emphasizing their responsiveness and ability to meet deadlines. Their expertise in integrating complex needs into intuitive web solutions has been particularly praised.

    View Profile
  • IT First Source Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Red Hook, NY

    Services provided

    50% Web Development
    50% Custom Software Development

    Focus Areas

    25% JavaScript
    50% Java
    25% HTML5

    Launched in 2000, IT First Source is a software development firm and web development firm. The agency offers Custom Software Development and Web Development.

    Read more
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  • Deveint Limited Logotype

    5.0 1 review
    $5,000+
    $25 - $49 / hr
    10 - 49
    Nairobi, Kenya

    Services provided

    10% Web Development
    35% Custom Software Development
    10% Cybersecurity +6
    10% E-Commerce Development
    10% Mobile App Development
    10% Web Design
    5% AI Development
    5% Blockchain
    5% IoT Development

    Focus Areas

    30% JavaScript
    35% PHP
    20% HTML5 +1
    15% Python

    Deveint Limited offers Website Development, Web Design, and various web programming services. Reviews highlight their prompt and budget-friendly service, flexible project management, and strong work culture. The company is praised for delivering projects on time and within budget, with a particular focus on local solutions.

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Ability to deliver
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Clutch Leaders Matrix

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

1 ImageX
2 xfive
3 Brainhub
4 The Software House
5 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. 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

    39.5/40.0
    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
  3. 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

    45% Web Development
    75% JavaScript
    55% 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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