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Top JavaScript Developers

JavaScript powers everything from interactive websites to complex enterprise applications. Partnering with an experienced JavaScript development agency ensures your product is fast, secure, and ready to scale. Clutch makes it easy to find trusted providers by publishing in-depth, verified client reviews and transparent performance data. Use our filters to sort agencies by budget, location, framework expertise, and more. Looking for regional specialists? Browse firms in the United States, United Kingdom, or Canada to compare portfolios and pricing in your market. Start exploring today and shortlist partners that align with your goals.
Ratings Updated: May 19, 2026
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15 Leaders 15 Contenders

22,061 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Featured

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    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

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

    Services provided

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

    Focus Areas

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

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

    See all 89 projects
    3 of 3 reviews are 5 stars
    2 new reviews for Web Development services
    $10,000 – $49,000 avg. project cost

    Reviewed 3 times in the past 6 months

    In the last six months, clients have expressed high satisfaction with Digis, a Fiverr company (NYSE: FVRR), highlighting their impressive responsiveness and quality of development. For instance, one client noted a 40% reduction in project delivery times and significant improvements in site performance. Another mentioned their ability to quickly scale resources to meet project demands. Overall, the sentiment is overwhelmingly positive, with clients appreciating the team's integration and collaborative approach, leaving little room for improvement.
    Read 3 Recent Reviews

    Industry Experience

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

    Read All Reviews

    Select Industry to see insights

    Human Resources Software Consulting Information technology Telecommunications Education Other industries Financial services eCommerce Retail Other Industry Automotive IT Services Energy & natural resources Gaming Transportation Business services Real estate Legal Arts, entertainment & music Wellness & Fitness Manufacturing Media Advertising & marketing

    Average Project Cost Breakdown

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

    What Clients Have Said

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

    View projects from:

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

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    2 - 9
    Toronto, Canada

    Services provided

    20% Web Development
    20% Branding
    20% Generative AI +2
    20% Search Engine Optimization
    20% UX/UI Design

    Focus Areas

    25% JavaScript
    25% HTML5
    25% PHP +2
    15% jquery
    10% Typescript

    OHM. Labs is a branding agency. The team offers Branding and Search Engine Optimization and is in Toronto, Canada.

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  • AarambhX Logotype

    AarambhX

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% AI Agents
    20% AI Consulting +2
    20% AI Development
    20% Generative AI

    Focus Areas

    25% JavaScript
    45% Python
    20% SQL +1
    10% Other programming & scripting languages

    AarambhX, a website development firm, is in Surat, India. They offer Web Development and Artificial Intelligence.

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  • Featherpulp Creative Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9
    Bengaluru, India

    Services provided

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

    Focus Areas

    25% JavaScript
    25% Other programming & scripting languages
    20% Python +2
    20% SQL
    10% XML

    Featherpulp Creative is a branding company. They are in Bhubaneswar, India and Bengaluru, India. Their team specializes in Branding and Web Design.

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  • Inventa IT Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    Dubai, United Arab Emirates

    Services provided

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

    Focus Areas

    25% JavaScript
    25% PHP
    25% Python +1
    25% SQL

    Inventa IT is an IT strategy consulting company. They offer IT strategy consulting and Cybersecurity and are in Dubai, United Arab Emirates.

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  • WebMarkaz Logotype

    WebMarkaz

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% AI Development
    20% API Development +2
    20% Blockchain
    20% Custom Software Development

    Focus Areas

    25% JavaScript
    50% Python
    25% PHP

    WebMarkaz is a custom software development company. They are in Islamabad, Pakistan, and their services include Custom Software Development and Web Development.

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  • Indsoftwork Logotype

    Indsoftwork

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +2
    20% Search Engine Optimization
    20% Web Design

    Focus Areas

    25% JavaScript
    60% Typescript
    15% HTML5

    Indsoftwork is a web development firm. Their team is in Bengaluru, India. The company focuses on Web Development and E-Commerce Development.

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  • Softnoid IT Solutions Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9
    Indore, India

    Services provided

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

    Focus Areas

    15% JavaScript
    30% PHP
    30% Ruby +2
    20% AJAX
    5% HTML5

    Website development firm Softnoid IT Solutions was launched in 2021. The team provides Web Development and E-Commerce Development.

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  • Hunchbite Technologies Pvt. Ltd. Logotype

    Hunchbite Technologies Pvt. Ltd.

    Not yet reviewed

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

    Services provided

    35% Web Development
    40% Custom Software Development
    15% E-Commerce Development +1
    10% IT Strategy Consulting

    Focus Areas

    10% JavaScript
    70% Typescript
    10% Go +1
    10% Python

    Established in 2024, Hunchbite Technologies Pvt. Ltd. Is a small custom software development company located in Bengaluru, India. Their team provides Custom Software Development and Web Development.

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  • Oriona Tech Logotype

    Oriona Tech

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    35% Web Development
    25% Blockchain
    20% Microservices Architecture Services +2
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    30% Ruby
    20% Python +4
    15% Typescript
    10% ASP.NET
    10% jquery
    5% HTML5

    Launched in 2025, Oriona Tech is a web development company. The firm provides Web Development and Blockchain.

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  • ACEAGENCY Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% Search Engine Optimization
    15% UX/UI Design +5
    15% Web Design
    10% AI Agents
    10% Branding
    10% CRM Consulting and SI
    10% E-Commerce Development

    Focus Areas

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

    Founded in 2020, ACEAGENCY is a small Sheptytskyi, Ukraine-based SEO services firm. Their services include Search Engine Optimization and Web Design.

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  • Evolving Development Logotype

    Evolving Development

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    2 - 9

    Services provided

    35% Web Development
    45% Search Engine Optimization
    10% Digital Strategy +1
    10% Marketing Strategy

    Focus Areas

    10% JavaScript
    85% Python
    5% Java

    SEO company Evolving Development was founded in 2026. The agency offers Search Engine Optimization and Web Development.

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  • Oncreation & Web Services Logotype

    Oncreation & Web Services

    Not yet reviewed

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

    Services provided

    30% Web Development
    20% Search Engine Optimization
    20% Web Design +2
    15% Application Testing
    15% Custom Software Development

    Focus Areas

    15% JavaScript
    15% HTML5
    10% AJAX +6
    10% PHP
    10% Python
    10% Redux
    10% SQL
    10% Typescript
    10% jquery

    Web development firm Oncreation & Web Services is located in London, England. Their services include Web Development and Web Design.

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  • Techstat Dynamics Private limited Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9
    Ludhiana, India

    Services provided

    30% Web Development
    30% Custom Software Development
    25% API Development +2
    10% Cybersecurity
    5% Application Testing

    Focus Areas

    15% JavaScript
    45% Python
    20% Java +3
    10% SQL
    5% Go
    5% Typescript

    Based in Ludhiana, India, Techstat Dynamics Private limited is a custom software development firm. They focus on Custom Software Development and Web Development.

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  • TINKA AI Logotype

    TINKA AI

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    15% AI Agents +6
    15% Generative AI
    10% E-Commerce Development
    5% CRM Consulting and SI
    5% Content Marketing
    5% Ecommerce Marketing
    5% Low/No Code Development

    Focus Areas

    25% JavaScript
    25% PHP
    25% Python +1
    25% SQL

    TINKA AI is a website development company. Their small team is headquartered in Chișinău, Moldova. Their services include Web Development and Custom Software Development.

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  • Modern Intelligence Solutions (MIS) Logotype

    Modern Intelligence Solutions (MIS)

    Not yet reviewed

    $25,000+
    Undisclosed
    2 - 9

    Services provided

    30% Web Development
    30% Custom Software Development
    25% AI Agents +3
    5% AI Consulting
    5% AI Development
    5% API Development

    Focus Areas

    15% JavaScript
    25% Python
    10% C++ +8
    10% Objective C
    10% Swift
    5% AJAX
    5% Kotlin
    5% Redux
    5% SQL
    5% Visual Basic
    5% XML

    Web development firm Modern Intelligence Solutions (MIS) provides Web Development and Custom Software Development. They are located in Bayonne, New Jersey.

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  • OV Technology Logotype

    OV Technology

    Not yet reviewed

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

    Services provided

    20% Web Development
    25% Cybersecurity
    20% IT Managed Services +3
    15% AI Consulting
    10% E-Commerce Development
    10% Other IT Consulting and SI

    Focus Areas

    25% JavaScript
    50% Typescript
    25% Python

    OV Technology is a Cybersecurity company. They were launched in 2024, and their services include Cybersecurity and IT managed services.

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  • Aiodify Logotype

    Aiodify

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Advertising
    20% Content Marketing +2
    20% Social Media Marketing
    20% Web Design

    Focus Areas

    25% JavaScript
    15% PHP
    15% Python +5
    10% AJAX
    10% HTML5
    10% SQL
    10% XML
    5% Typescript

    Aiodify is a web design company. The team provides Web Design and Web Development and is located in Bangalore, India and Bhadrak, India.

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  • Vicentra Logotype

    Vicentra

    Not yet reviewed

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

    Services provided

    25% Web Development
    30% Pay Per Click
    20% Web Design +3
    10% Digital Strategy
    10% Search Engine Optimization
    5% Social Media Marketing

    Focus Areas

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

    Vicentra is a PPC agency based in Bucharest, Romania. They offer Pay Per Click and Web Development.

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  • Information Process Solutions and Services Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9
    Overland Park, KS

    Services provided

    10% Web Development
    20% Digital Strategy
    20% E-Commerce Development +3
    20% Sales Outsourcing
    20% Search Engine Optimization
    10% AR/VR Development

    Focus Areas

    14% JavaScript
    43% HTML5
    29% PHP +2
    7% AJAX
    7% SQL

    Information Process Solutions and Services is a small Digital Strategy company launched in 2018. Their services include Digital Strategy and Search Engine Optimization.

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  • Megatask Technologies Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +7
    10% Email Marketing
    10% Graphic Design
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    11% JavaScript
    42% PHP
    11% AJAX +5
    11% Ember.js
    11% Visual Basic
    5% Objective C
    5% Redux
    4% Kotlin

    Megatask Technologies Pvt Ltd is a social media marketing agency. Founded in 2019, the team focuses on Social Media Marketing and Email Marketing.

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  • Cliqx Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    50 - 249
    São Paulo, Brazil

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +10
    10% Enterprise App Modernization
    10% Mobile App Development
    10% Robotics Process Automation
    10% UX/UI Design
    5% AI Development
    5% Application Management & Support
    5% Architectural Design
    5% Blockchain
    5% IT Strategy Consulting
    5% Product Design

    Focus Areas

    11% JavaScript
    11% C#
    11% Kotlin +11
    11% Python
    11% SQL
    5% AJAX
    5% HTML5
    5% Objective C
    5% PHP
    5% Redux
    5% Swift
    5% Typescript
    5% Visual Basic
    5% XML

    Cliqx is a São Paulo, Brazil-based user experience company. The team specializes in UX/UI Design and Custom Software Development.

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  • Fuzionest Private Limited Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    25% Mobile App Development
    15% Low/No Code Development +8
    10% Custom Software Development
    10% E-Commerce Development
    5% AI Development
    5% Blockchain
    5% Cloud Consulting & SI
    5% Enterprise App Modernization
    5% IT Managed Services
    5% IT Strategy Consulting

    Focus Areas

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

    Founded in 2020, Fuzionest Private Limited is a small app development firm. Their team provides Mobile App Development and Web Development.

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  • Esolz Technologies Private Limited Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Application Testing
    10% Custom Software Development +7
    10% E-Commerce Development
    10% Graphic Design
    10% Logo
    10% Mobile App Development
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP +7
    10% C#
    10% C++
    10% Ember.js
    10% Java
    10% PHP
    10% Python
    10% SQL

    Esolz Technologies Private Limited is a custom software development company. Founded in 2003, the agency provides Custom Software Development and UX/UI Design.

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  • Mind IT Limited Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9
    Nairobi, Kenya

    Services provided

    10% Web Development
    10% Digital Strategy
    10% IT Strategy Consulting +13
    10% Web Design
    5% Cloud Consulting & SI
    5% Content Marketing
    5% Custom Software Development
    5% E-Commerce Development
    5% Email Marketing
    5% Graphic Design
    5% Logo
    5% Mobile App Development
    5% Print Design
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design

    Focus Areas

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

    Mind IT Limited, a Digital Strategy company, is located in Nairobi, Kenya. They offer Digital Strategy and IT strategy consulting and were established in 2012.

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  • Harmonic Egg Logotype

    Harmonic Egg

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249

    Services provided

    10% Web Development
    10% Branding
    10% Graphic Design +10
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Web Design
    5% Content Marketing
    5% Custom Software Development
    5% E-Commerce Development
    5% Ecommerce Marketing
    5% Social Media Marketing
    5% Video Production

    Focus Areas

    10% JavaScript
    10% C#
    10% C++ +7
    10% Java
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% Ruby
    10% SQL
    10% Swift

    Midsize branding agency Harmonic Egg, is based in Broomfield, Colorado. Their services include Branding and Search Engine Optimization.

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  • SC Happy Web SRL Logotype

    SC Happy Web SRL

    5.0 1 review
    Undisclosed
    $25 - $49 / hr
    2 - 9

    Services provided

    10% Web Development
    10% Content Marketing
    10% Digital Strategy +7
    10% E-Commerce Development
    10% Email Marketing
    10% Market Research
    10% Marketing Strategy
    10% Pay Per Click
    10% Search Engine Optimization
    10% Web Design

    Focus Areas

    10% JavaScript
    70% PHP
    20% SQL

    SC Happy Web SRL offers Website Development services with a strong focus on custom solutions. Clients praise the company's timely delivery, high-quality work, and effective communication. Reviewers consistently highlight SC Happy Web SRL's impressive marketing and development skills, making them a reliable partner in Web Dev projects.

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  • Pragmatic Reach | IT Services & Digital Marketing Agency Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9
    Karachi, Pakistan

    Services provided

    10% Web Development
    10% Branding
    10% Content Marketing +7
    10% Custom Software Development
    10% Digital Strategy
    10% E-Commerce Development
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% HTML5 +7
    10% Java
    10% Kotlin
    10% PHP
    10% Python
    10% SQL
    10% Typescript
    10% jquery

    Pragmatic Reach | IT Services & Digital Marketing Agency is a branding company launched in 2019. The firm offers Branding and Digital Strategy, and is small.

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  • Intellinez Systems Logotype

    Not yet reviewed

    $10,000+
    Undisclosed
    50 - 249
    Sahibzada Ajit Singh Nagar, India

    Services provided

    10% Web Development
    10% Application Management & Support
    10% Cloud Consulting & SI +7
    10% Custom Software Development
    10% E-Commerce Development
    10% IT Managed Services
    10% IT Strategy Consulting
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    22% JavaScript
    22% PHP
    22% SQL +3
    12% AJAX
    11% Perl
    11% Redux

    Intellinez Systems is a web design company founded in 2020. Their team provides Web Design and UX/UI Design.

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  • Versatile Techno Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    10 - 49
    Ahmedabad, India

    Services provided

    15% Web Development
    20% Mobile App Development
    15% Wearable App Development +5
    10% Application Management & Support
    10% Application Testing
    10% Custom Software Development
    10% E-Commerce Development
    10% Enterprise App Modernization

    Focus Areas

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

    Versatile Techno is an application development firm. Located in Ahmedabad, India, the company was established in 2010. Their services include Mobile App Development and Wearable App Development.

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  • Dream Steps Technologies Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    30% Mobile App Development
    15% Web Design +5
    10% E-Commerce Development
    10% Graphic Design
    10% Logo
    5% Search Engine Optimization
    5% UX/UI Design

    Focus Areas

    10% JavaScript
    40% PHP
    20% SQL +3
    10% AJAX
    10% ASP.NET
    10% XML

    Dream Steps Technologies is an app development firm. The company is based in Noida, India and Repentigny, Canada. Their team focuses on Mobile App Development and Web Design.

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  • SilverServers Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% Custom Software Development
    20% Other Application Development +4
    20% Search Engine Optimization
    10% Web Design
    5% Graphic Design
    5% Logo

    Focus Areas

    10% JavaScript
    50% PHP
    10% AJAX +3
    10% Perl
    10% Python
    10% SQL

    Software development company SilverServers is headquartered in Kamloops, Canada. They provide Custom Software Development and Search Engine Optimization.

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  • Market Media Connect Inc. Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% Search Engine Optimization
    15% Social Media Marketing +6
    10% Content Marketing
    10% Digital Strategy
    10% Ecommerce Marketing
    10% Pay Per Click
    10% UX/UI Design
    10% Web Design

    Focus Areas

    15% JavaScript
    70% PHP
    15% SQL

    Launched in 2016, Market Media Connect Inc. Is a social media marketing company. The team specializes in Social Media Marketing and Search Engine Optimization.

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  • Samyak Online Services Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    75% E-Commerce Development
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    40% PHP
    25% AJAX +1
    25% SQL

    Samyak Online Services Pvt Ltd is an e-commerce development company. The New Delhi, India-based team specializes in E-Commerce Development and Web Development.

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  • TwentyTwo Digital Logotype

    Not yet reviewed

    $5,000+
    $150 - $199 / hr
    2 - 9
    Fortitude Valley, Australia

    Services provided

    10% Web Development
    30% Search Engine Optimization
    20% Social Media Marketing +4
    10% Digital Strategy
    10% Email Marketing
    10% Mobile App Development
    10% UX/UI Design

    Focus Areas

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

    TwentyTwo Digital is a SEO services firm established in 2020. The small team focuses on Search Engine Optimization and Social Media Marketing.

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  • WAVAI Logotype

    5.0 6 reviews
    $1,000+
    $50 - $99 / hr
    2 - 9
    Hawally, Kuwait

    Services provided

    25% Web Development
    25% E-Commerce Development
    25% Mobile App Development +1
    25% Web Design

    Focus Areas

    10% JavaScript
    50% PHP
    10% AJAX +3
    10% Ruby
    10% SQL
    10% Typescript

    WAVAI is a web development company specializing in creating tailored digital solutions. Their expertise in custom website development and web design is reflected in their ability to craft engaging and user-friendly platforms. Review feedback is overwhelmingly positive, with 100% of reviewers highlighting WAVAI's commitment to understanding client needs and delivering functional, athlete-focused digital spaces. Clients commend their project management and attention to detail.

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  • Matumba Logotype

    5.0 5 reviews
    $1,000+
    $25 - $49 / hr
    2 - 9
    Clearwater, FL

    Services provided

    25% Web Development
    30% Search Engine Optimization
    10% E-Commerce Development +5
    10% UX/UI Design
    10% Web Design
    5% Content Marketing
    5% Logo
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    25% HTML5
    15% PHP +6
    15% jquery
    10% Other programming & scripting languages
    10% SQL
    5% AJAX
    5% Java
    5% Python

    Matumba provides comprehensive digital services, including Website Development, Web Design, SEO, and Internet Marketing. Client reviews emphasize Matumba's professionalism, punctuality, and effectiveness in boosting online presence. The company's expertise in SEO and web development, along with a commitment to delivering quality projects on time, makes them a highly recommended choice for businesses seeking to enhance their digital footprint.

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  • White Pearl It Solution Pvt Ltd Logotype

    5.0 1 review
    $1,000+
    $25 - $49 / hr
    2 - 9
    Ahmedabad, India

    Services provided

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

    Focus Areas

    15% JavaScript
    35% AJAX
    35% SQL +2
    10% C#
    5% Python

    White Pearl It Solution Pvt Ltd offers expert Web Development services, including Web Programming and Online Development. Reviews highlight their skilled team and effective project management, with clients praising the cost-effectiveness and alignment with company values. While initial project updates lacked structure, improvements were noted, showcasing a commitment to refining their communication process.

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  • Codzera Technologies Logotype

    4.0 1 review
    Undisclosed
    < $25 / hr
    2 - 9
    मुंबई, India

    Services provided

    20% Web Development
    20% UX/UI Design
    15% Custom Software Development +3
    15% Digital Strategy
    15% Search Engine Optimization
    15% Web Design

    Focus Areas

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

    Codzera Technologies offers Website Development and Web Design services, with a focus on crafting websites and enhancing online presence. Reviews highlight their affordability, timely delivery, and professional team. Clients appreciate their supportive nature and valuable suggestions, indicating a strong emphasis on client satisfaction and effective project management.

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  • Devson Technologies Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Cloud Consulting & SI
    25% Mobile App Development +2
    15% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    30% ASP.NET
    30% C# +3
    10% AJAX
    10% Other programming & scripting languages
    10% SQL

    Devson Technologies is a cloud consulting & SI company. The Ahmedabad, India-based company was launched in 2015. Their services include cloud consulting & SI and Custom Software Development.

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  • Zumeweb Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    Las Vegas, NV

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +2
    20% Search Engine Optimization
    20% Web Design

    Focus Areas

    15% JavaScript
    15% PHP
    10% AJAX +6
    10% C
    10% C++
    10% Java
    10% Other programming & scripting languages
    10% Python
    10% SQL

    Headquartered in Las Vegas, Nevada, Zumeweb is a custom software development company. They provide Custom Software Development and E-Commerce Development.

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  • Alias Apps Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    2 - 9
    Halton Hills, Canada

    Services provided

    25% Web Development
    50% Mobile App Development
    25% UX/UI Design

    Focus Areas

    10% JavaScript
    20% Java
    20% Swift +7
    10% C#
    10% PHP
    10% SQL
    5% Objective C
    5% Python
    5% Ruby
    5% XML

    Alias Apps is an app development firm. Headquartered in Halton Hills, Canada, the company was founded in 2014. Their team provides Mobile App Development and UX/UI Design.

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  • Hexito Logotype

    Hexito

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% IT Strategy Consulting +3
    20% Mobile App Development
    10% Application Management & Support
    10% Application Testing

    Focus Areas

    15% JavaScript
    15% AJAX
    15% Other programming & scripting languages +4
    15% PHP
    15% SQL
    15% XML
    10% Java

    Hexito is an IT strategy consulting company. Established in 2017, their team focuses on IT strategy consulting and Custom Software Development.

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  • Javary Co. Logotype

    Not yet reviewed

    $25,000+
    $100 - $149 / hr
    2 - 9
    São Paulo, Brazil

    Services provided

    25% Web Development
    50% Mobile App Development
    20% Enterprise App Modernization +1
    5% Business Consulting

    Focus Areas

    10% JavaScript
    30% Python
    10% C# +5
    10% C++
    10% Java
    10% Objective C
    10% SQL
    10% Swift

    Javary Co. Is a mobile application development company. The São Paulo, Brazil-based team specializes in Mobile App Development and Web Development.

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  • Cloud9 Solutions Logotype

    Cloud9 Solutions

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% Mobile App Development
    10% AR/VR Development +6
    10% Application Management & Support
    10% Application Testing
    10% Blockchain
    10% Custom Software Development
    10% E-Commerce Development
    10% Enterprise App Modernization

    Focus Areas

    20% JavaScript
    30% ASP.NET
    20% PHP +3
    15% C#
    10% Visual Basic
    5% SQL

    Cloud9 Solutions is a Surrey, Canada-based app development company. Their services include Mobile App Development and Web Development.

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  • Asuri Solutions Sp. z o.o. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Toruń, Poland

    Services provided

    20% Web Development
    20% Mobile App Development
    20% UX/UI Design +3
    20% Web Design
    10% IT Staff Augmentation
    10% Logo

    Focus Areas

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

    Based in Toruń, Poland, Asuri Solutions Sp. Z o.o. Is an user experience design company. They offer UX/UI Design and Mobile App Development and were established in 2018.

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  • Webex IT Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9
    Casablanca, Morocco

    Services provided

    25% Web Development
    25% Search Engine Optimization
    25% Social Media Marketing +2
    15% Web Design
    10% E-Commerce Development

    Focus Areas

    10% JavaScript
    90% PHP

    Webex IT is a small SEO agency founded in 2012. Their team provides Search Engine Optimization and Social Media Marketing.

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  • Legion Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    2 - 9
    Dubai, United Arab Emirates

    Services provided

    15% Web Development
    30% Marketing Strategy
    20% Digital Strategy +3
    20% UX/UI Design
    10% Mobile App Development
    5% Graphic Design

    Focus Areas

    20% JavaScript
    30% PHP
    20% C++ +2
    20% Objective C
    10% Java

    Legion is a Marketing Strategy company. They specialize in Marketing Strategy and UX/UI Design and were established in 2019.

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  • Irasus Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    Delhi, India

    Services provided

    10% Web Development
    30% IoT Development
    20% AI Development +6
    10% Custom Software Development
    10% Other Application Development
    5% Application Management & Support
    5% Cloud Consulting & SI
    5% Enterprise App Modernization
    5% IT Managed Services

    Focus Areas

    25% JavaScript
    30% Python
    30% SQL +3
    5% C
    5% C++
    5% PHP

    Irasus is an IoT development company in Delhi, India. They focus on IoT development and Artificial Intelligence.

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  • Forward Digital Logotype

    Forward Digital

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    50% Typescript
    30% C# +1
    10% SQL

    Established in 2020, Forward Digital is a small London, England-based web design company. Their team specializes in Web Design and Custom Software Development.

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  • BYOT Technologies Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    2 - 9
    Coimbatore, India

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Mobile App Development +5
    10% E-Commerce Development
    10% Mobile & App Marketing
    10% Search Engine Optimization
    5% Pay Per Click
    5% Social Media Marketing

    Focus Areas

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

    BYOT Technologies is a small custom software development company based in Coimbatore, India. The team specializes in Custom Software Development and Mobile App Development.

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At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.

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

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Ability to deliver
Focus
Clutch Leaders Matrix

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

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

List of the Top 15 JavaScript Development Companies

  1. ImageX Logotype

    ImageX

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

    Ability to deliver

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

    Service focus

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

    xfive

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

    Ability to deliver

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

    Service focus

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

    Brainhub

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

    Ability to deliver

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

    Service focus

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

    The Software House

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

    Ability to deliver

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

    Service focus

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

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    Airdev

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

    Ability to deliver

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

    Service focus

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

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

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

    Lizard Global

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

    Ability to deliver

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

    Service focus

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

    PopArt Studio

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

    Ability to deliver

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

    Service focus

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

    Softonix

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

    Ability to deliver

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

    Service focus

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

    Scopic

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

    Ability to deliver

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

    Service focus

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

    GeekyAnts

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

    Ability to deliver

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

    Service focus

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

    INOXOFT

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

    Ability to deliver

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

    Service focus

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

    HTMLPanda

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

    Ability to deliver

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

    Service focus

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

    SpdLoad

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

    Ability to deliver

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

    Service focus

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

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

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

    PowerGate Software

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

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

    Toptal

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

    Ability to deliver

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

    Service focus

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

    Arcanys

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

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

    Blazity

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

    Ability to deliver

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

    Service focus

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

    Experion Technologies

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

    Ability to deliver

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

    Service focus

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

    Human Made

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

    Ability to deliver

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

    Service focus

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

    Vincit

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

    Ability to deliver

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

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

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

    Flowout

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

    Ability to deliver

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

    Service focus

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

    Sigma Software Group

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

    Ability to deliver

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

    Service focus

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

    Merixstudio

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

    Ability to deliver

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

    Service focus

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

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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