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Top JavaScript Developers

JavaScript powers everything from interactive websites to complex enterprise applications. Partnering with an experienced JavaScript development agency ensures your product is fast, secure, and ready to scale. Clutch makes it easy to find trusted providers by publishing in-depth, verified client reviews and transparent performance data. Use our filters to sort agencies by budget, location, framework expertise, and more. Looking for regional specialists? Browse firms in the United States, United Kingdom, or Canada to compare portfolios and pricing in your market. Start exploring today and shortlist partners that align with your goals.
Ratings Updated: December 24, 2025
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15 Leaders 15 Contenders

21,455 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 87 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

    50% Web Development
    50% Custom Software Development

    Focus Areas

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

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

    See all 87 projects
    5 of 5 JavaScript reviews are 5 stars
    2 new reviews for JavaScript in past 6 months
    $10,000 – $49,000 avg. project cost

    JavaScript Experience

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

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

    Web Development PROJECT HIGHLIGHT

    Development Staff Augmentation for Online Cooking Platform

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

    Average Project Cost Breakdown

    $10,000 to $49,000 (24) $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 consistently praised Digis for their competitive pricing and strong value for money. Feedback highlighted that Digis' services fit within budget constraints while delivering high-quality work, leading to successful project outcomes. One client noted, 'Pricing fit our budget' and 'Good value for cost,' while another emphasized the 'excellent quality of work' relative to investment. Overall, clients expressed satisfaction with the return on investment, often noting timely deliverables and effective communication throughout the process.
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    $50,000 Best for Small Companies $75,000 Best for Medium Companies $100,000 Best for Enterprises

    Custom Product Development

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

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% Branding
    30% Product Design +4
    10% UX/UI Design
    10% Web Design
    5% Video Marketing
    5% Video Production

    Focus Areas

    42% JavaScript
    21% HTML5
    21% Typescript +3
    6% SQL
    5% Go
    5% jquery

    OrderIntended is a branding agency. Their team is headquartered in Timișoara, Romania and offers Branding and Product Design.

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  • DSK Solutions Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% AI Development
    10% API Development +7
    10% Custom Software Development
    10% DevOps Managed Services
    10% E-Commerce Development
    10% Microservices Architecture Services
    10% Mobile App Development
    10% Other Application Development
    10% UX/UI Design

    Focus Areas

    15% JavaScript
    20% PHP
    20% Python +3
    20% SQL
    15% Java
    10% Ruby

    DSK Solutions, an user experience company, offers UX/UI Design and Custom Software Development. The company is in Hyderabad, India.

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  • Khmer Gaming Software Solution Co. Ltd Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    250 - 999
    Koh Thom, Cambodia

    Services provided

    10% Web Development
    50% Custom Software Development
    20% Mobile App Development +2
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    10% ASP
    10% Apex +7
    10% C#
    10% Java
    10% Perl
    10% Python
    10% Ruby
    10% SQL
    10% XML

    Khmer Gaming Software Solution Co. Ltd is a midsize custom software development firm established in 2014. Their team specializes in Custom Software Development and Mobile App Development.

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  • Clarity Creative Group Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    2 - 9
    Winter Springs, FL

    Services provided

    10% Web Development
    25% Web Design
    11% Search Engine Optimization +10
    9% Content Marketing
    9% Conversion Optimization
    9% Pay Per Click
    5% Logo
    5% Print Design
    5% Social Media Marketing
    3% Digital Strategy
    3% Email Marketing
    3% IT Strategy Consulting
    3% UX/UI Design

    Focus Areas

    25% JavaScript
    35% PHP
    20% SQL +3
    10% AJAX
    5% Other programming & scripting languages
    5% Ruby

    Headquartered in Winter Springs, Florida, Clarity Creative Group is a small web design company. Their services include Web Design and Search Engine Optimization.

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  • Bento Graphics Inc Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% UX/UI Design
    20% Branding +3
    20% Web Design
    15% Graphic Design
    5% Print Design

    Focus Areas

    20% JavaScript
    70% PHP
    10% SQL

    User experience design agency Bento Graphics Inc is located in Shibuya City, Japan. They specialize in UX/UI Design and Branding and were founded in 2006.

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  • buyigfollower.uk Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    65% Social Media Marketing
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    50% PHP
    40% SQL

    Buyigfollower.uk is a small social media marketing company headquartered in Lytchett Matravers, England and Viterbo, Italy. The team focuses on Social Media Marketing and Web Development.

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  • Elisoft Solutions Logotype

    Elisoft Solutions

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% DevOps Managed Services +7
    10% E-Commerce Development
    10% Microservices Architecture Services
    10% Mobile App Development
    10% Search Engine Optimization
    10% UX/UI Design
    10% Wearable App Development
    10% Web Design

    Focus Areas

    25% JavaScript
    20% PHP
    15% Redux +6
    10% SQL
    10% Typescript
    5% ASP
    5% ASP.NET
    5% HTML5
    5% jquery

    Elisoft Solutions, a SEO services firm, focuses on Search Engine Optimization and Web Design. The firm is in Addis Ababa, Ethiopia.

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  • Samaj Infotech Logotype

    4.5 1 review
    Undisclosed
    < $25 / hr
    10 - 49
    Gandhinagar, India

    Services provided

    20% Web Development
    20% Mobile App Development
    10% Custom Software Development +6
    10% Graphic Design
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design
    5% E-Commerce Development
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    20% AJAX
    20% Other programming & scripting languages +3
    20% PHP
    20% Swift
    10% XML

    Samaj Infotech provides back-end software engineering, graphic design, and quality assurance services. Their clients commend them for their professionalism, effective project management, and ability to meet or exceed expectations. Reviews highlight their capability to deliver innovative, cost-effective solutions while maintaining strong communication despite time zone differences.

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  • IT Enterprise Logotype

    IT Enterprise

    Not yet reviewed

    Undisclosed
    $50 - $99 / hr
    10 - 49

    Services provided

    20% Web Development
    20% Application Testing
    20% E-Commerce Development +3
    20% Mobile App Development
    10% Custom Software Development
    10% IT Managed Services

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP +7
    10% ASP.NET
    10% Apex
    10% C
    10% C#
    10% C++
    10% ColdFusion
    10% Java

    Launched in 2000, IT Enterprise, a small e-commerce development firm, is headquartered in London, England. Their services include E-Commerce Development and Mobile App Development.

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  • Abservetech Private Limited Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP +7
    10% ASP.NET
    10% C#
    10% C++
    10% Other programming & scripting languages
    10% PHP
    10% SQL
    10% XML

    Abservetech Private Limited, a custom software development firm, is based in Madurai, India. They provide Custom Software Development and E-Commerce Development.

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  • Internet Exposure Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    40% Other programming & scripting languages
    10% ASP +4
    10% ColdFusion
    10% Java
    10% SQL
    10% Swift

    Internet Exposure is an app development firm headquartered in Minneapolis, Minnesota. Their services include Mobile App Development and Search Engine Optimization.

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  • IDEA Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% UX/UI Design +3
    20% Web Design
    10% Conversion Optimization
    10% IT Strategy Consulting

    Focus Areas

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

    Based in Vilnius, Lithuania, IDEA is an UX design company. Launched in 2003, the team focuses on UX/UI Design and E-Commerce Development.

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  • Rockstar Coders Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    50% Custom Software Development
    20% Mobile App Development +2
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    50% Ruby
    10% Other programming & scripting languages +2
    10% PHP
    10% Python

    Founded in 2003, Rockstar Coders is a custom software development firm. The team specializes in Custom Software Development and Mobile App Development and is in Chicago, Illinois.

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  • Decide Consulting Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    60% IT Staff Augmentation
    10% Custom Software Development +2
    10% Cybersecurity
    10% Other IT Consulting and SI

    Focus Areas

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

    Established in 2003, Decide Consulting is a small Houston, Texas-based IT staff augmentation company. Their services include IT staff augmentation and Custom Software Development.

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  • WUX Logotype

    WUX

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +2
    20% UX/UI Design
    20% Web Design

    Focus Areas

    10% JavaScript
    30% PHP
    10% AJAX +5
    10% C#
    10% HTML5
    10% Python
    10% Ruby
    10% SQL

    Small web design company WUX, is in Cuijk, Netherlands and Maastricht, Netherlands. The team provides Web Design and UX/UI Design.

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  • James Dowen Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    Freelancer
    Birmingham, England

    Services provided

    30% Web Development
    20% Custom Software Development
    20% E-Commerce Development +2
    20% Web Design
    10% UX/UI Design

    Focus Areas

    20% JavaScript
    60% PHP
    20% SQL

    Launched in 2011, James Dowen is a website development company. The team focuses on Web Development and Custom Software Development and is located in Birmingham, England.

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  • Platform45 Logotype

    Not yet reviewed

    $100,000+
    $50 - $99 / hr
    50 - 249
    Johannesburg, South Africa

    Services provided

    15% Web Development
    25% Mobile App Development
    25% Product Design +2
    25% UX/UI Design
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    20% Ruby
    10% ASP.NET +9
    10% C++
    10% Java
    10% SQL
    5% C#
    5% Kotlin
    5% PHP
    5% Python
    5% Swift
    5% Typescript

    Platform45 is an user experience design company launched in 2008. The company focuses on UX/UI Design and Product Design.

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  • AlexDx Logotype

    AlexDx

    Not yet reviewed

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

    Services provided

    15% Web Development
    20% Graphic Design
    20% Print Design +5
    20% Web Design
    10% Interior Design
    5% Corporate Photography
    5% E-Commerce Development
    5% Packaging Design

    Focus Areas

    20% JavaScript
    45% HTML5
    25% PHP +1
    10% Python

    AlexDx is a web design company. Founded in 2013, the company is based in Saguenay, Canada. Their services include Web Design and Graphic Design.

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  • Adimen Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% AI Development
    30% Cloud Consulting & SI +3
    10% BI & Big Data Consulting & SI
    10% Custom Software Development
    10% Other Application Development

    Focus Areas

    10% JavaScript
    80% Python
    10% Go

    Cloud consulting & SI company Adimen was established in 2018. Based in Odesa, Ukraine, the team provides cloud consulting & SI and Artificial Intelligence.

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  • Tempatkita Software Logotype

    Tempatkita Software

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

    Social media marketing company Tempatkita Software is in. The team offers Social Media Marketing and Search Engine Optimization.

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  • Saynin Tech Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    2 - 9
    Karachi, Pakistan

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Digital Strategy +2
    20% Graphic Design
    20% Mobile App Development

    Focus Areas

    10% JavaScript
    30% Python
    15% HTML5 +5
    15% PHP
    10% C++
    10% jquery
    5% Apex
    5% Java

    Saynin Tech is a Digital Strategy company. Their small team is based in Karachi, Pakistan and provides Digital Strategy and Graphic Design. The company was founded in 2024.

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  • Veta AI Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% AI Agents
    20% AI Development +2
    20% Custom Software Development
    20% Generative AI

    Focus Areas

    10% JavaScript
    35% Python
    15% AJAX +5
    15% PHP
    10% SQL
    5% Other programming & scripting languages
    5% XML
    5% jquery

    Small software development firm Veta AI, is in Sukkur, Pakistan. The team provides Custom Software Development and Web Development.

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  • DigiTechMatrix Logotype

    DigiTechMatrix

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Application Testing
    20% Custom Software Development +2
    20% Mobile App Development
    20% Social Media Marketing

    Focus Areas

    20% JavaScript
    20% Kotlin
    20% Ruby +2
    20% SQL
    20% Swift

    DigiTechMatrix is a social media marketing agency. The small Noida, India-based team specializes in Social Media Marketing and Custom Software Development. The company was founded in 2024.

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  • BossLabs Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    2 - 9
    Stockport, England

    Services provided

    25% Web Development
    35% Enterprise App Modernization
    20% Custom Software Development +2
    10% AR/VR Development
    10% Mobile App Development

    Focus Areas

    11% JavaScript
    17% C#
    11% AJAX +6
    11% C++
    11% PHP
    11% Python
    11% SQL
    11% Typescript
    6% XML

    Enterprise App Modernization company BossLabs was founded in 2020. Located in Stockport, England, the team specializes in Enterprise App Modernization and Web Development.

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  • VEXO Labs Logotype

    VEXO Labs

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% AI Development
    15% Generative AI +7
    15% Low/No Code Development
    10% Custom Software Development
    10% E-Commerce Development
    10% Mobile App Development
    5% Blockchain
    5% Data Annotation Services
    5% DevOps Managed Services

    Focus Areas

    25% JavaScript
    55% Python
    10% ASP.NET +2
    5% Java
    5% Kotlin

    VEXO Labs, an AI development company, was launched in 2021. The team offers Artificial Intelligence and Web Development and is located in Soham, England.

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  • Webski Solutions Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Web Design
    10% AR/VR Development +7
    10% E-Commerce Development
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% UX/UI Design
    5% Graphic Design
    5% Social Media Marketing

    Focus Areas

    21% JavaScript
    42% PHP
    11% SQL +3
    11% XML
    10% AJAX
    5% Objective C

    Webski Solutions, a web design agency, was established in 2002. The agency provides Web Design and UX/UI Design, and is small.

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  • Coded Lines Ltd Logotype

    Coded Lines Ltd

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% DevOps Managed Services
    20% Mobile App Development +4
    20% UX/UI Design
    10% AR/VR Development
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    18% JavaScript
    24% Redux
    24% Typescript +3
    12% backbone.js
    12% jquery
    10% HTML5

    Coded Lines Ltd, an UX agency, was established in 2018. They offers UX/UI Design and Mobile App Development.

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  • DGedits Web Solution Logotype

    DGedits Web Solution

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    2 - 9

    Services provided

    20% Web Development
    20% UX/UI Design
    10% Advertising +5
    10% Branding
    10% Graphic Design
    10% Low/No Code Development
    10% Other Marketing
    10% Web Design

    Focus Areas

    10% JavaScript
    20% HTML5
    20% Other programming & scripting languages +4
    20% PHP
    10% AJAX
    10% XML
    10% jquery

    DGedits Web Solution is a web design company. They are in Piliyandala, Sri Lanka and have small team. They provide Web Design and UX/UI Design.

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  • Aasa Technologies Logotype

    Not yet reviewed

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

    Services provided

    12% Web Development
    15% Mobile App Development
    10% Web Design +12
    9% E-Commerce Development
    7% Conversion Optimization
    5% Custom Software Development
    5% Digital Strategy
    5% Email Marketing
    5% Graphic Design
    5% Logo
    5% Mobile & App Marketing
    5% Print Design
    5% Search Engine Optimization
    5% UX/UI Design
    2% Other Application Development

    Focus Areas

    30% JavaScript
    30% PHP
    30% SQL +2
    5% AJAX
    5% Redux

    Application development company Aasa Technologies was founded in 2016. The team specializes in Mobile App Development and Web Development and is in Pune, India.

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  • ThemeLooks Ltd. Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% UX/UI Design +3
    20% Web Design
    10% Custom Software Development
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    25% Redux
    25% SQL +3
    20% PHP
    10% AJAX
    10% Other programming & scripting languages

    ThemeLooks Ltd. Is a web design agency. Headquartered in Dhaka, Bangladesh, the firm was founded in 2014. Their team provides Web Design and UX/UI Design.

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  • Vatoce Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    40% Custom Software Development
    20% Other Application Development +2
    15% E-Commerce Development
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    40% C#
    20% PHP +2
    20% SQL
    10% Kotlin

    Headquartered in Cairo, Egypt, Vatoce is a custom software development firm. Launched in 2018, the team offers Custom Software Development and Other Application Development.

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  • Fetch Sky Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Mobile App Development
    15% BI & Big Data Consulting & SI +3
    15% Custom Software Development
    10% AR/VR Development
    10% Low/No Code Development

    Focus Areas

    11% JavaScript
    16% Redux
    16% Typescript +9
    11% AJAX
    11% Swift
    5% HTML5
    5% Kotlin
    5% Objective C
    5% PHP
    5% Python
    5% SQL
    5% XML

    Fetch Sky is a big data company. They are located in Santa Ana, California and Karachi, Pakistan. Their team specializes in BI & big data consulting & SI and Web Development.

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  • TechBuilder Logotype

    5.0 1 review
    $1,000+
    $25 - $49 / hr
    50 - 249
    Sahibzada Ajit Singh Nagar, India

    Services provided

    20% Web Development
    40% Mobile App Development
    20% AI Development +1
    20% Custom Software Development

    Focus Areas

    10% JavaScript
    20% Go
    20% HTML5 +4
    20% Java
    10% Ember.js
    10% PHP
    10% Python

    TechBuilder is a reliable and innovative AI app development company that drives the vision of global innovators by shaping the future with smart ideas and adaptable solutions that tackle complex

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  • Okoone Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Sheung Wan, Hong Kong

    Services provided

    20% Web Development
    30% Mobile App Development
    10% E-Commerce Development +4
    10% Mobile & App Marketing
    10% UX/UI Design
    10% Wearable App Development
    10% Web Design

    Focus Areas

    10% JavaScript
    20% Java
    20% Objective C +4
    20% PHP
    15% SQL
    10% Swift
    5% Ruby

    Okoone is an application development firm. The Sheung Wan, Hong Kong-based firm was founded in 2014. Their team offers Mobile App Development and Web Development.

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  • Appwhiz Logotype

    Not yet reviewed

    Undisclosed
    $50 - $99 / hr
    50 - 249
    Dubai, United Arab Emirates

    Services provided

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

    Focus Areas

    10% JavaScript
    40% PHP
    30% Other programming & scripting languages +2
    10% AJAX
    10% SQL

    Midsize UX design company Appwhiz, is in Dubai, United Arab Emirates and Jordan. The team specializes in UX/UI Design and E-Commerce Development.

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  • Flexus Solutions LLC Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    23% Mobile App Development
    10% E-Commerce Development +9
    10% Search Engine Optimization
    10% Wearable App Development
    5% IT Strategy Consulting
    5% UX/UI Design
    5% Web Design
    4% Pay Per Click
    3% Application Testing
    3% Social Media Marketing
    2% Content Marketing

    Focus Areas

    10% JavaScript
    50% PHP
    20% ASP.NET +2
    10% AJAX
    10% Python

    Flexus Solutions LLC offers services in Website Development, Web Design, and Web Programming. Reviews highlight their technical expertise, customer-centric approach, and commitment to meeting deadlines while maintaining high-quality standards. Clients commend their seamless communication, agile project management, and innovative solutions, making them a reliable partner for web development projects.

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  • Weegree IT Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    50 - 249
    Opole, Poland

    Services provided

    10% Web Development
    50% Recruiting
    20% Custom Software Development +2
    10% IT Strategy Consulting
    10% Mobile App Development

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% Java +3
    20% Python
    10% PHP
    10% Ruby

    Headquartered in Opole, Poland, Weegree IT is a midsize Recruiting company. The team offers Recruiting and Custom Software Development.

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  • Pierre Studios Logotype

    Pierre Studios

    Not yet reviewed

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

    Services provided

    30% Web Development
    30% Custom Software Development
    10% Enterprise App Modernization +3
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    30% JavaScript
    30% AJAX
    20% PHP +2
    10% Java
    10% Swift

    Pierre Studios is a software development firm. Launched in 2000, their team offers Custom Software Development and Web Development.

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  • Victory Logotype

    Victory

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Digital Strategy
    20% IT Strategy Consulting +4
    20% Web Design
    10% IT Managed Services
    10% Mobile App Development
    10% UX/UI Design

    Focus Areas

    20% JavaScript
    20% PHP
    20% SQL +4
    10% AJAX
    10% Java
    10% Python
    10% XML

    Victory is a Digital Strategy company. They are based in Austin, Texas and San Francisco, California and have midsize team. Their team specializes in Digital Strategy and IT strategy consulting.

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  • OZ IT Solutions Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    50 - 249
    Blacktown, Australia

    Services provided

    20% Web Development
    30% Mobile App Development
    20% E-Commerce Development +3
    10% Application Management & Support
    10% Custom Software Development
    10% Digital Strategy

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP.NET +7
    10% Java
    10% Objective C
    10% PHP
    10% Python
    10% Ruby
    10% SQL
    10% Swift

    OZ IT Solutions is a mobile app development firm. Based in Blacktown, Australia, their team focuses on Mobile App Development and E-Commerce Development.

    Read more
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  • ixStrata, Inc. Logotype

    Not yet reviewed

    $75,000+
    $100 - $149 / hr
    50 - 249
    Santa Monica, CA

    Services provided

    20% Web Development
    30% Custom Software Development
    20% BI & Big Data Consulting & SI +3
    15% IT Managed Services
    10% IoT Development
    5% Mobile App Development

    Focus Areas

    10% JavaScript
    40% C#
    20% ASP.NET +2
    20% SQL
    10% Other programming & scripting languages

    IxStrata, Inc., a software development company, was established in 2011. The team provides Custom Software Development and BI & big data consulting & SI.

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  • Studio Twanneman Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    Freelancer
    Tilburg, Netherlands

    Services provided

    10% Web Development
    10% Application Management & Support
    10% Application Testing +8
    10% Custom Software Development
    10% Graphic Design
    10% Mobile App Development
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design
    5% Content Marketing
    5% Digital Strategy

    Focus Areas

    50% JavaScript
    50% PHP

    Established in 2002, Studio Twanneman is a small SEO agency. Their services include Search Engine Optimization and Web Design.

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  • MetaShare. Inc Logotype

    MetaShare. Inc

    Not yet reviewed

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

    Services provided

    20% Web Development
    25% Custom Software Development
    16% Mobile App Development +6
    9% UX/UI Design
    9% Web Design
    7% E-Commerce Development
    5% IT Staff Augmentation
    5% IT Strategy Consulting
    4% Architectural Design

    Focus Areas

    10% JavaScript
    20% C#
    20% Java +6
    20% SQL
    10% C++
    5% ASP.NET
    5% Objective C
    5% PHP
    5% Python

    Custom software development firm MetaShare. Inc is in Calgary, Canada. They offer Custom Software Development and Web Development and were founded in 2013.

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  • Sysmedac Technologies Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    50 - 249
    Chennai, India

    Services provided

    20% Web Development
    20% Digital Strategy
    20% E-Commerce Development +2
    20% Mobile App Development
    20% Social Media Marketing

    Focus Areas

    10% JavaScript
    20% ASP.NET
    20% Other programming & scripting languages +4
    15% AJAX
    15% SQL
    10% ASP
    10% C#

    Sysmedac Technologies is a Digital Strategy company. The midsize Chennai, India-based team specializes in Digital Strategy and E-Commerce Development. The firm was established in 2015.

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  • ConceptRecall Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    50 - 249
    Karachi, Pakistan

    Services provided

    15% Web Development
    25% Mobile App Development
    15% AI Development +5
    10% API Development
    10% Custom Software Development
    10% Low/No Code Development
    10% Microservices Architecture Services
    5% DevOps Managed Services

    Focus Areas

    15% JavaScript
    30% Typescript
    15% SQL +6
    10% Python
    10% Swift
    5% HTML5
    5% PHP
    5% Redux
    5% XML

    ConceptRecall is a website development company. The Karachi, Pakistan-based team provides Web Development and Mobile App Development.

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  • ICDM Logotype

    Not yet reviewed

    Undisclosed
    $50 - $99 / hr
    Freelancer
    Haifa, Israel

    Services provided

    30% Web Development
    20% Custom Software Development
    20% Digital Strategy +2
    20% Social Media Marketing
    10% IT Strategy Consulting

    Focus Areas

    30% JavaScript
    30% PHP
    20% ASP.NET +2
    10% C#
    10% Other programming & scripting languages

    ICDM, a small website development firm, is headquartered in Haifa, Israel. Their services include Web Development and Custom Software Development.

    Read more
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  • Kwan Tecnología Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Mérida, Mexico

    Services provided

    10% Web Development
    50% IT Staff Augmentation
    10% Application Management & Support +3
    10% Custom Software Development
    10% Enterprise App Modernization
    10% Mobile App Development

    Focus Areas

    20% JavaScript
    20% Typescript
    15% Java +7
    15% Python
    5% C#
    5% Go
    5% Objective C
    5% Redux
    5% SQL
    5% Swift

    Kwan Tecnología is an IT staff augmentation company launched in 2010. In Mérida, Mexico, the team focuses on IT staff augmentation and Custom Software Development.

    Read more
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  • Hartley Lab Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    50 - 249
    Pune, India

    Services provided

    10% Web Development
    16% Low/No Code Development
    10% Blockchain +15
    10% Custom Software Development
    10% Mobile App Development
    5% Architectural Design
    5% E-Commerce Development
    5% Enterprise App Modernization
    5% IT Staff Augmentation
    5% IT Strategy Consulting
    3% AI Development
    3% Application Management & Support
    3% Application Testing
    3% Product Design
    3% Wearable App Development
    2% IoT Development
    1% UX/UI Design
    1% Web Design

    Focus Areas

    20% JavaScript
    20% PHP
    20% Python +8
    5% AJAX
    5% ASP.NET
    5% Go
    5% Redux
    5% Ruby
    5% SQL
    5% Typescript
    5% XML

    Web development firm Hartley Lab is based in Pune, India and Singapore, Singapore. Established in 2011, the team focuses on Web Development and Custom Software Development.

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  • ReformedTech Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Dhaka, Bangladesh

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% UX/UI Design +5
    10% Custom Software Development
    10% Low/No Code Development
    10% Web Design
    5% Search Engine Optimization
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    40% PHP
    10% AJAX +4
    10% Other programming & scripting languages
    10% Python
    10% Ruby
    10% Swift

    ReformedTech is a web design agency. Founded in 2017, the firm is located in Dhaka, Bangladesh. Their team focuses on Web Design and UX/UI Design.

    Read more
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  • Web studio LEON Logotype

    Web studio LEON

    Not yet reviewed

    $1,000+
    Undisclosed
    50 - 249

    Services provided

    10% Web Development
    10% Branding
    10% Conversion Optimization +12
    10% Mobile App Development
    10% Search Engine Optimization
    5% Content Marketing
    5% Corporate Training & Coaching
    5% Digital Strategy
    5% Email Marketing
    5% IT Strategy Consulting
    5% Logo
    5% Mobile & App Marketing
    5% Pay Per Click
    5% Video Production
    5% Web Design

    Focus Areas

    20% JavaScript
    35% SQL
    15% AJAX +4
    15% PHP
    5% Ember.js
    5% Other programming & scripting languages
    5% Visual Basic

    Founded in 2011, Web studio LEON is a midsize branding firm. Their team provides Branding and Conversion Optimization.

    Read more
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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.

Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.

We evaluate service providers using a structured methodology that combines:

  • In-depth client interviews and ratings
  • Comprehensive project details
  • 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 Brainhub
2 xfive
3 ImageX
4 The Software House
5 ATEAM SOFT SOLUTIONS
6 Airdev
7 Xmartlabs
8 Toptal
9 Softonix
10 INOXOFT
11 Lizard Global
12 PopArt Studio
13 GeekyAnts
14 SpdLoad
15 Techuz InfoWeb Pvt. Ltd.

List of the Top 15 JavaScript Development Companies

  1. Brainhub Logotype

    Brainhub

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

    Ability to deliver

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

    Service focus

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

    xfive

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

    Ability to deliver

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

    Service focus

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

    ImageX

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

    Ability to deliver

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

    Service focus

    90% Web Development
    50% JavaScript
    10% Other
    View Profile Visit Website
  4. The Software House Logotype

    The Software House

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

    Ability to deliver

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

    Service focus

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

    ATEAM SOFT SOLUTIONS

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

    Ability to deliver

    37.7/40.0
    18.4/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

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

    Airdev

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

    Ability to deliver

    38.9/40.0
    19.6/20 Reviews
    9.6/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

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

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    Toptal

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

    Ability to deliver

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

    Service focus

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

    Softonix

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

    Ability to deliver

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

    Service focus

    70% Web Development
    50% JavaScript
    30% Other
    View Profile Visit Website
  10. INOXOFT Logotype

    INOXOFT

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

    Ability to deliver

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

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  11. Lizard Global Logotype

    Lizard Global

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

    Ability to deliver

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

    Service focus

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

    PopArt Studio

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

    Ability to deliver

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

    Service focus

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

    GeekyAnts

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

    Ability to deliver

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

    Service focus

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

    SpdLoad

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

    Ability to deliver

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

    Service focus

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

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

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

    HTMLPanda

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

    Ability to deliver

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

    Service focus

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

    Sigma Software Group

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

    30% Web Development
    15% JavaScript
    70% Other
    View Profile Visit Website
  21. Brainium Information Technologies Logotype

    Brainium Information Technologies

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

    Ability to deliver

    36.3/40.0
    19/20 Reviews
    9/10 Clients & Experience
    8.4/10 Market Presence

    Service focus

    35% Web Development
    30% JavaScript
    65% Other
    View Profile Visit Website
  22. WPWeb Infotech Logotype

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

    65% Web Development
    20% JavaScript
    35% Other
    View Profile Visit Website
  23. Experion Technologies Logotype

    Experion Technologies

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

    Ability to deliver

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

    Service focus

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

    Human Made

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

    Ability to deliver

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

    Service focus

    100% Web Development
    30% JavaScript
    View Profile Visit Website
  25. Probey Services Logotype

    Probey Services

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

    Ability to deliver

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

    Service focus

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

    Blazity

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

    Ability to deliver

    37.8/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    9.2/10 Market Presence

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

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

    Vincit

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

    Ability to deliver

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

    Service focus

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

    PowerGate Software

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

    Ability to deliver

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

    Service focus

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

    Arcanys

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

    Ability to deliver

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

    Service focus

    30% Web Development
    20% JavaScript
    70% Other
    View Profile Visit Website

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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