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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

    What are Featured Providers?

    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.

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    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.
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    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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  • Zemingo Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    50 - 249
    Herzliya, Israel

    Services provided

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

    Focus Areas

    20% JavaScript
    30% Kotlin
    30% Swift +1
    20% Java

    Zemingo is a midsize user experience design agency established in 2008. Their team specializes in UX/UI Design and Mobile App Development.

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  • ClaySys Technologies Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    50 - 249
    Cincinnati, OH

    Services provided

    20% Web Development
    30% Custom Software Development
    30% IT Strategy Consulting +1
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% PHP +2
    20% Python
    20% SQL

    ClaySys Technologies is a custom software development firm located in Cincinnati, Ohio. They focus on Custom Software Development and IT strategy consulting and were established in 2009.

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  • ashleyidesign Logotype

    ashleyidesign

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    Freelancer

    Services provided

    30% Web Development
    25% Digital Strategy
    25% Email Marketing +1
    20% Web Design

    Focus Areas

    100% JavaScript

    Ashleyidesign is a website development firm. Located in Salem, Massachusetts, their team offers Web Development and Digital Strategy.

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  • Expert Web Designing Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    10% E-Commerce Development
    10% IT Managed Services +9
    10% Mobile App Development
    10% Search Engine Optimization
    10% Web Design
    5% Affiliate Marketing
    5% Graphic Design
    5% IT Strategy Consulting
    5% Pay Per Click
    5% Social Media Marketing
    5% UX/UI Design

    Focus Areas

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

    Expert Web Designing is a web development firm. The midsize Ahmedabad, India-based team provides Web Development and E-Commerce Development. The agency was founded in 2010.

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  • The Digital Ambassador Logotype

    The Digital Ambassador

    Not yet reviewed

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

    Services provided

    80% Web Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    30% JavaScript
    70% PHP

    The Digital Ambassador is a small web development company based in Auckland, New Zealand. Their services include Web Development and UX/UI Design.

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  • AFFINTECH Logotype

    Not yet reviewed

    $5,000+
    $150 - $199 / hr
    2 - 9
    Al Bataeh, United Arab Emirates

    Services provided

    30% Web Development
    40% Enterprise App Modernization
    10% E-Commerce Development +2
    10% Graphic Design
    10% Mobile App Development

    Focus Areas

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

    AFFINTECH is an Enterprise App Modernization company in Al Bataeh, United Arab Emirates. They focus on Enterprise App Modernization and Web Development and were founded in 2021.

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  • NVISH Solutions Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Newark, CA

    Services provided

    30% Web Development
    30% Other Digital Marketing
    20% Staffing +2
    10% Mobile App Development
    10% Other IT Consulting and SI

    Focus Areas

    10% JavaScript
    35% PHP
    15% HTML5 +5
    10% Java
    10% Python
    10% SQL
    5% AJAX
    5% Other programming & scripting languages

    NVISH Solutions is an Other Digital Marketing company established in 2006. The firm provides Other Digital Marketing and Web Development, and is midsize.

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  • Softhealer Technologies Pvt. Ltd. Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    50 - 249
    Rajkot, India

    Services provided

    10% Web Development
    30% ERP Consulting and SI
    20% AI Consulting +3
    20% CRM Consulting and SI
    10% BI & Big Data Consulting & SI
    10% Mobile App Development

    Focus Areas

    30% JavaScript
    55% Python
    10% jquery +1
    5% XML

    Softhealer Technologies Pvt. Ltd. Is an ERP consulting and SI company. The Rajkot, India-based agency offers ERP consulting and SI and CRM consulting and SI.

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  • OSITS Pakistan Logotype

    Not yet reviewed

    $1,000+
    $200 - $300 / hr
    50 - 249
    Karachi, Pakistan

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% Custom Software Development +2
    20% IT Managed Services
    20% Mobile App Development

    Focus Areas

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

    OSITS Pakistan is a website development company launched in 2019. Based in Karachi, Pakistan, the team focuses on Web Development and IT managed services.

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  • TechVerdi Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    40% Custom Software Development
    20% Mobile App Development +1
    10% Search Engine Optimization

    Focus Areas

    10% JavaScript
    10% C#
    10% ColdFusion +7
    10% HTML5
    10% Java
    10% PHP
    10% Python
    10% Ruby
    10% Swift
    10% Typescript

    TechVerdi is a software development company. The midsize Pully, Switzerland-based team provides Custom Software Development and Web Development. The agency was founded in 2015.

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  • Tech Arch Softwares Logotype

    4.8 8 reviews
    $1,000+
    < $25 / hr
    50 - 249
    Panchkula, India

    Services provided

    20% Web Development
    30% Search Engine Optimization
    20% Digital Strategy +3
    10% Low/No Code Development
    10% Social Media Marketing
    10% Web Design

    Focus Areas

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

    Tech Arch Softwares offers Web Development, Web Design, and Online Development services. The reviews highlight their high ratings, responsiveness, and excellent project management skills. Clients consistently commend their timely delivery, attention to detail, and ability to meet diverse project requirements, indicating a strong fit for web-related projects.

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  • Profex Tech Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    50 - 249
    Noida, India

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% IT Staff Augmentation +2
    20% Mobile App Development
    20% UX/UI Design

    Focus Areas

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

    Profex Tech is an UX design company. Founded in 2019, the firm provides UX/UI Design and cloud consulting & SI.

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  • The Fashion Generation Logotype

    The Fashion Generation

    Not yet reviewed

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

    Services provided

    20% Web Development
    30% Search Engine Optimization
    10% Custom Software Development +4
    10% Ecommerce Marketing
    10% Low/No Code Development
    10% Mobile App Development
    10% Social Media Marketing

    Focus Areas

    15% JavaScript
    30% PHP
    15% ASP.NET +3
    15% C#
    15% HTML5
    10% Other programming & scripting languages

    Think Big Digital Solutions, a small SEO services firm, is in Abu Dhabi, United Arab Emirates. Their services include Search Engine Optimization and Web Development.

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  • Pexsol Interactive Logotype

    4.5 1 review
    $5,000+
    $25 - $49 / hr
    10 - 49
    Karachi, Pakistan

    Services provided

    30% Web Development
    20% E-Commerce Development
    20% Mobile App Development +2
    20% Social Media Marketing
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    80% PHP
    10% ASP.NET

    Pexsol Interactive specializes in Website Development, including Web Design and Online Development, with a focus on high-end markets. Reviews indicate strong satisfaction with their WordPress development capabilities and professional project management. Clients appreciate their consistent results and effective team, though there is a suggestion for expanding their services to include social media marketing.

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  • Atomos Technologies Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    25% Custom Software Development
    25% Web Design +2
    20% Mobile App Development
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    15% Kotlin
    15% Objective C +6
    10% C#
    10% Java
    10% PHP
    10% Python
    10% Ruby
    10% Swift

    Atomos Technologies is a web design agency established in 2021. The team specializes in Web Design and Custom Software Development and is based in Mumbai, India.

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  • Modernsoft Innovations Logotype

    4.5 1 review
    $1,000+
    < $25 / hr
    2 - 9
    Dhaka, Bangladesh

    Services provided

    20% Web Development
    35% Custom Software Development
    15% E-Commerce Development +3
    10% AI Development
    10% IT Managed Services
    10% Mobile App Development

    Focus Areas

    30% JavaScript
    20% C#
    10% ASP.NET +4
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% SQL

    ModernSoft Innovations is a full-service software development agency helping businesses transform their operations through intelligent, scalable, and user-friendly digital solutions. Founded in

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    More responsive than most other service providers

    Modernsoft Innovations is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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  • NEX2GEN Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9
    Kyiv, Ukraine

    Services provided

    20% Web Development
    70% Custom Software Development
    5% Application Management & Support +1
    5% E-Commerce Development

    Focus Areas

    30% JavaScript
    50% PHP
    20% Python

    NEX2GEN is a custom software development company praised for its ability to deliver tailored software solutions that enhance operational efficiency. With positive feedback from 100% of reviewers, highlights include a 40% reduction in manual tasks and a 30% productivity boost. Clients commend their proactive communication and flexibility, although more frequent early-stage updates were suggested.

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  • Kodkodkod Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% Blockchain
    25% E-Commerce Development +2
    25% Mobile App Development
    10% AR/VR Development

    Focus Areas

    38% JavaScript
    38% PHP
    8% Go +2
    8% Rust
    8% Typescript

    Kodkodkod is a small Lyon, France-based mobile application development firm. The team focuses on Mobile App Development and E-Commerce Development.

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  • Web2Web Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    10 - 49
    Cape Town, South Africa

    Services provided

    10% Web Development
    10% API Development
    10% E-Commerce Development +13
    10% Web Design
    5% Application Management & Support
    5% Conversion Optimization
    5% DevOps Managed Services
    5% Ecommerce Marketing
    5% Enterprise App Modernization
    5% Graphic Design
    5% Logo
    5% Mobile App Development
    5% Pay Per Click
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design

    Focus Areas

    15% JavaScript
    25% PHP
    15% AJAX +4
    15% SQL
    15% jquery
    10% HTML5
    5% Python

    Web2Web is a web design agency based in Cape Town, South Africa. Founded in 2009, the team provides Web Design and Web Development.

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  • Safala Softech Logotype

    Safala Softech

    Not yet reviewed

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

    Services provided

    18% Web Development
    18% Mobile App Development
    16% CRM Consulting and SI +7
    12% Custom Software Development
    12% ERP Consulting and SI
    11% Cloud Consulting & SI
    5% Application Management & Support
    4% Other Application Development
    2% Application Testing
    2% Wearable App Development

    Focus Areas

    27% JavaScript
    25% Python
    11% Java +7
    9% PHP
    5% C++
    5% Ruby
    5% SQL
    5% Swift
    4% AJAX
    4% Typescript

    Founded in 2021, Safala Softech is a mobile app development company. In Jersey City, New Jersey, the team offers Mobile App Development and Web Development.

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  • Elantratech Logotype

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    10 - 49
    Cambridge, England

    Services provided

    25% Web Development
    12% E-Commerce Development
    10% Mobile App Development +26
    5% Custom Software Development
    5% IT Managed Services
    5% UX/UI Design
    5% Web Design
    3% Application Testing
    3% Architectural Design
    3% Graphic Design
    3% Product Design
    2% AR/VR Development
    2% Blockchain
    2% Enterprise App Modernization
    1% AI Development
    1% Application Management & Support
    1% Broadcast Video
    1% IT Strategy Consulting
    1% Interior Design
    1% IoT Development
    1% Lighting Design
    1% Logo
    1% Other Application Development
    1% Other Design
    1% Out of Home Design
    1% Packaging Design
    1% Print Design
    1% Video Production
    1% Wearable App Development

    Focus Areas

    20% JavaScript
    39% Python
    15% Java +10
    5% ASP.NET
    5% Swift
    3% C#
    3% PHP
    3% Redux
    2% AJAX
    2% Ruby
    1% C++
    1% Go
    1% Typescript

    Established in 2016, Elantratech is a website development firm. The team specializes in Web Development and E-Commerce Development.

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  • Iconiceyes Graphic Designer Orlando LLC Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Web Design
    20% Search Engine Optimization +3
    15% Graphic Design
    10% Branding
    5% Logo

    Focus Areas

    20% JavaScript
    30% PHP
    25% Other programming & scripting languages +4
    12% Python
    5% AJAX
    5% XML
    3% Java

    Based in Orlando, Florida, Iconiceyes Graphic Designer Orlando LLC is a web design company. They offer Web Design and Web Development.

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  • Bridgestone Technologies & Associates Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Jaipur, India

    Services provided

    10% Web Development
    15% Mobile App Development
    15% Search Engine Optimization +6
    10% Custom Software Development
    10% E-Commerce Development
    10% Ecommerce Marketing
    10% Low/No Code Development
    10% Pay Per Click
    10% Web Design

    Focus Areas

    33% JavaScript
    33% HTML5
    20% Python +2
    10% PHP
    4% SQL

    Bridgestone Technologies & Associates is a web design agency. They were established in 2022 and provide Web Design and Search Engine Optimization.

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  • Pivotal Consulting Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Seattle, WA

    Services provided

    20% Web Development
    30% Cloud Consulting & SI
    20% Enterprise App Modernization +2
    20% IT Strategy Consulting
    10% Business Consulting

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% C# +5
    10% C++
    10% SQL
    10% XML
    5% AJAX
    5% Apex

    Pivotal Consulting, a cloud consulting & SI company, is based in Seattle, Washington. The team offers cloud consulting & SI and Enterprise App Modernization.

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  • Nearshore Portugal Logotype

    Not yet reviewed

    $50,000+
    $25 - $49 / hr
    50 - 249
    Lisboa, Portugal

    Services provided

    10% Web Development
    70% IT Staff Augmentation
    10% Custom Software Development +1
    10% UX/UI Design

    Focus Areas

    25% JavaScript
    15% ASP.NET
    15% C# +5
    15% Java
    15% PHP
    5% Perl
    5% Python
    5% Ruby

    Nearshore Portugal is an IT staff augmentation company. Based in Lisboa, Portugal, the team specializes in IT staff augmentation and Custom Software Development.

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  • Provisions Group Logotype

    Not yet reviewed

    $5,000+
    $150 - $199 / hr
    50 - 249
    Franklin, TN

    Services provided

    15% Web Development
    25% CRM Consulting and SI
    20% Marketing Strategy +3
    15% BI & Big Data Consulting & SI
    15% Custom Software Development
    10% Cloud Consulting & SI

    Focus Areas

    20% JavaScript
    20% C#
    15% PHP +7
    10% ASP.NET
    10% Ruby
    10% SQL
    5% Python
    5% Redux
    3% Java
    2% Perl

    Provisions Group is a CRM consulting and SI company. Their team is located in Franklin, Tennessee. The firm specializes in CRM consulting and SI and Marketing Strategy.

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  • Kivyx Technologies Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    50% Mobile App Development
    15% Custom Software Development +1
    10% API Development

    Focus Areas

    30% JavaScript
    30% Typescript
    15% Kotlin +2
    15% Swift
    10% HTML5

    Kivyx Technologies, a mobile application development company, was launched in 2019. The small team provides Mobile App Development and Web Development.

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  • Luminous Tec Logotype

    Not yet reviewed

    $10,000+
    $150 - $199 / hr
    10 - 49
    Irvine, CA

    Services provided

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

    Focus Areas

    13% JavaScript
    47% SQL
    27% Kotlin +1
    13% Python

    Luminous Tec is a mobile app development company. Established in 2006, the team focuses on Mobile App Development and E-Commerce Development. The firm is located in Irvine, California.

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  • 41studio Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    50% Ruby
    10% PHP +3
    10% Python
    10% SQL
    10% Swift

    Located in Cimahi, Indonesia, 41studio is a software development firm. Their services include Custom Software Development and other IT consulting and SI.

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  • Mostrum Srl Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% AR/VR Development
    15% Custom Software Development +7
    15% Mobile App Development
    10% API Development
    10% UX/UI Design
    5% AI Consulting
    5% AI Development
    5% Blockchain
    5% IoT Development

    Focus Areas

    13% JavaScript
    25% PHP
    25% Typescript +4
    13% HTML5
    12% SQL
    6% Other programming & scripting languages
    6% Redux

    Mostrum Srl is a custom software development company established in 2023. Their services include Custom Software Development and Web Development.

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  • iFrameWeb Solutions Logotype

    iFrameWeb Solutions

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

    Services provided

    35% Web Development
    35% Search Engine Optimization
    10% Low/No Code Development +2
    10% Pay Per Click
    10% Social Media Marketing

    Focus Areas

    15% JavaScript
    25% PHP
    20% AJAX +4
    15% Python
    15% Ruby
    5% SQL
    5% Swift

    iFrameWeb Solutions offers Website Development services with a focus on creating LMS systems and managing PPC advertising campaigns. Their clients appreciate their professional and responsive approach, timely delivery, and excellent communication skills. Feedback highlights their trustworthiness and the impressive quality of their work, though expanding their team could improve project handling efficiency.

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  • Edxweb Logotype

    Edxweb

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

    Services provided

    20% Web Development
    20% Pay Per Click
    20% Search Engine Optimization +5
    10% E-Commerce Development
    10% Low/No Code Development
    10% Web Design
    5% Ecommerce Marketing
    5% Logo

    Focus Areas

    30% JavaScript
    30% HTML5
    10% PHP +3
    10% Redux
    10% SQL
    10% jquery

    Edxweb offers Website Development services with particular expertise in Web Design and Web Dev. The reviews highlight their ability to deliver optimized websites that achieve high CEO rankings and ROI, while also emphasizing their excellent communication and skilled specialists. Clients appreciate their timely delivery and strong project management.

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  • Saicosys Technologies (P) Limited Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    20% Search Engine Optimization
    20% Web Design +2
    15% E-Commerce Development
    15% IT Strategy Consulting

    Focus Areas

    10% JavaScript
    50% PHP
    30% Other programming & scripting languages +1
    10% AJAX

    Saicosys Technologies (P) Limited, a website development company, was launched in 2017. The team offers Web Development and Search Engine Optimization.

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  • Eden Solutions Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    30% Custom Software Development
    25% UX/UI Design +2
    15% Conversion Optimization
    10% Web Design

    Focus Areas

    20% JavaScript
    30% PHP
    30% SQL +2
    10% AJAX
    10% XML

    Eden Solutions is a New Delhi, India-based custom software development company. They focus on Custom Software Development and UX/UI Design and were founded in 2015.

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  • Kevsam Solutions Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% Web Design
    10% Advertising +7
    10% Digital Strategy
    10% IT Managed Services
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    5% Conversion Optimization
    5% Email Marketing

    Focus Areas

    25% JavaScript
    35% PHP
    20% Java +2
    15% Ruby
    5% AJAX

    Kevsam Solutions is a web design agency. The team offers Web Design and Web Development, and the company is in Nairobi, Kenya.

    Read more
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  • Actualize8 Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% Branding
    10% E-Commerce Development +13
    5% Custom Software Development
    5% Digital Strategy
    5% Email Marketing
    5% Graphic Design
    5% Logo
    5% Marketing Strategy
    5% Mobile App Development
    5% Other Design
    5% Packaging Design
    5% Print Design
    5% Social Media Marketing
    5% UX/UI Design
    5% Web Design

    Focus Areas

    30% JavaScript
    50% Ruby
    10% AJAX +1
    10% SQL

    Actualize8 is a branding agency. The Vancouver, Canada-based company provides Branding and E-Commerce Development.

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  • Dovetail Software Consulting Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Houston, TX

    Services provided

    30% Web Development
    30% Custom Software Development
    15% Application Management & Support +2
    15% Enterprise App Modernization
    10% E-Commerce Development

    Focus Areas

    10% JavaScript
    80% C#
    10% SQL

    Dovetail Software Consulting is a software development firm. They are in Houston, Texas. Their team offers Custom Software Development and Web Development.

    Read more
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  • CreatickWeb Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Branding
    20% Logo +2
    20% Social Media Marketing
    20% Web Design

    Focus Areas

    20% JavaScript
    20% AJAX
    20% Other programming & scripting languages +2
    20% PHP
    20% SQL

    CreatickWeb is a branding company launched in 2018. The company offers Branding and Logo.

    Read more
    View Profile
  • PERSOL CROSS TECHNOLOGY VIETNAM Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Ho Chi Minh City, Vietnam

    Services provided

    30% Web Development
    30% Custom Software Development
    25% Cloud Consulting & SI +3
    5% Application Testing
    5% IT Strategy Consulting
    5% Other Application Development

    Focus Areas

    10% JavaScript
    20% Java
    10% PHP +12
    5% AJAX
    5% ASP.NET
    5% C#
    5% Go
    5% Kotlin
    5% Objective C
    5% Python
    5% Ruby
    5% SQL
    5% Swift
    5% Typescript
    5% Visual Basic

    Launched in 2013, PERSOL CROSS TECHNOLOGY VIETNAM is a software development firm. Their team focuses on Custom Software Development and Web Development.

    Read more
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  • Marketing Max Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Pay Per Click +2
    20% Search Engine Optimization
    20% Social Media Marketing

    Focus Areas

    20% JavaScript
    20% PHP
    10% AJAX +5
    10% ASP.NET
    10% Java
    10% Kotlin
    10% Ruby
    10% SQL

    Founded in 2025, Marketing Max is a social media marketing agency. The company specializes in Social Media Marketing and Search Engine Optimization.

    Read more
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  • Evolution Infosystem Inc. Logotype

    Not yet reviewed

    $5,000+
    < $25 / hr
    50 - 249
    Wilmington, DE

    Services provided

    10% Web Development
    15% Custom Software Development
    15% E-Commerce Development +7
    10% Graphic Design
    10% Logo
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design
    5% CRM Consulting and SI
    5% IT Strategy Consulting

    Focus Areas

    16% JavaScript
    20% PHP
    16% AJAX +3
    16% Java
    16% Other programming & scripting languages
    16% SQL

    Evolution Infosystem Inc. Is a Wilmington, Delaware-based software development firm. They offer Custom Software Development and E-Commerce Development.

    Read more
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  • Ikran Innovation Logotype

    Ikran Innovation

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Branding
    20% E-Commerce Development +2
    20% Search Engine Optimization
    20% Social Media Marketing

    Focus Areas

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

    Launched in 2020, Ikran Innovation is a branding company. In Bhaktapur, Nepal, the team specializes in Branding and Social Media Marketing.

    Read more
    $799 ~12 page responsive site, ideal for small business $1,399 ~22 page responsive site ideal for medium business $2,199 ~50 page responsive site ideal for large business

    Affordable Software Solutions Package

    We design and develop custom software solutions tailored to your business needs. From MVPs for startups to scalable platforms for enterprises, Ikran Innovation delivers reliable, high-quality web and mobile apps with a focus on performance, user experience, and long-term value.
    View Packages
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  • Hapto Tech Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    30% AI Development
    20% Mobile App Development +4
    5% Custom Software Development
    5% Digital Strategy
    5% E-Commerce Development
    5% IoT Development

    Focus Areas

    15% JavaScript
    33% Java
    20% Python +3
    12% Typescript
    10% ASP.NET
    10% C#

    Artificial intelligence development company Hapto Tech was established in 2018. The team specializes in Artificial Intelligence and Web Development and is in Gurugram, India.

    Read more
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  • Techexpert International Logotype

    Not yet reviewed

    $50,000+
    $50 - $99 / hr
    10 - 49
    Brno, Czech Republic

    Services provided

    35% Web Development
    35% Custom Software Development
    15% Other Application Development +2
    10% Mobile App Development
    5% E-Commerce Development

    Focus Areas

    10% JavaScript
    10% C#
    10% C++ +10
    10% Java
    10% Objective C
    10% PHP
    10% SQL
    10% Swift
    5% AJAX
    5% Python
    5% XML
    3% ASP.NET
    2% Other programming & scripting languages

    Located in Brno, Czech Republic, Techexpert International is a small software development firm. Their services include Custom Software Development and Web Development.

    Read more
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  • FunkProductions Logotype

    5.0 1 review
    Undisclosed
    $100 - $149 / hr
    Freelancer
    Winnipeg, Canada

    Services provided

    50% Web Development
    35% E-Commerce Development
    10% Web Design +1
    5% UX/UI Design

    Focus Areas

    10% JavaScript
    60% PHP
    20% Python +1
    10% HTML5

    FunkProductions offers Website Development, Web Design, and WordPress Optimization services. Reviews highlight their effectiveness in improving brand visibility and website performance, along with their responsiveness and helpfulness. Clients value FunkProductions for their concise communication and alignment with company values.

    See all 1 projects
    $150 solo trades or startups needing a fast site $500 small firms needing full online presence $500 large firms needing full online presence

    GOFP - Get Online Fast Package

    Fixed-price WordPress build for small operators who need a real site fast. Includes domain, hosting, SSL, five pages, contact form, and basic SEO. Built on a lean stack, mobile-ready, async, and done in 3–7 days. You own it outright—no subscriptions, no retainers, no lock-in.
    View Packages
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  • Dtechex Technologies Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    35% Mobile App Development
    20% E-Commerce Development +1
    15% API Development

    Focus Areas

    30% JavaScript
    30% Typescript
    25% Redux +1
    15% Kotlin

    Application development firm Dtechex Technologies specializes in Mobile App Development and Web Development. They were founded in 2018.

    Read more
    View Profile
  • Laverity Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Application Testing
    10% Branding +7
    10% Digital Strategy
    10% E-Commerce Development
    10% Graphic Design
    10% Social Media Marketing
    10% UX/UI Design
    10% Video Production
    10% Web Design

    Focus Areas

    30% JavaScript
    40% ASP.NET
    30% PHP

    Laverity is a branding agency. Located in Vadodara, India, the company was launched in 2023. Their services include Branding and Digital Strategy.

    Read more
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  • Onlinetist Logotype

    Onlinetist

    5.0 1 review
    Undisclosed
    $50 - $99 / hr
    2 - 9

    Services provided

    60% Web Development
    20% E-Commerce Development
    10% AI Development +1
    10% Custom Software Development

    Focus Areas

    15% JavaScript
    30% PHP
    25% HTML5 +3
    10% AJAX
    10% Python
    10% SQL

    Onlinetist is a website developer in Dubai with over a decade of experience, specializing in custom-built websites designed to deliver real results. Combining advanced technical expertise with SEO

    Read more
    See all 1 projects
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  • GAP Software Solutions Pvt Ltd Logotype

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

    Services provided

    75% Web Development
    10% Custom Software Development
    10% Low/No Code Development +1
    5% Mobile App Development

    Focus Areas

    15% JavaScript
    65% PHP
    20% AJAX

    GAP Software Solutions Pvt Ltd provides reliable and scalable application development services tailored to various client needs. Reviews highlight their excellent communication, quality work, and agile project management. Clients appreciate their customer-first approach and transparency, leading to a heightened project delivery rate.

    See all 1 projects
    View Profile
  • Socobee Logotype

    Socobee

    5.0 1 review
    $1,000+
    < $25 / hr
    2 - 9

    Services provided

    25% Web Development
    25% IT Staff Augmentation
    25% Mobile App Development +2
    15% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    40% JavaScript
    25% PHP
    20% Other programming & scripting languages +2
    10% C#
    5% C++

    Socobee provides comprehensive IT support and back-office services. Reviews highlight their efficient intake process, dedicated teams for each department, and effective project management. Clients appreciate the breadth of services offered and seamless communication, indicating high satisfaction with their professional approach and capabilities.

    See all 1 projects
    View Profile

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We evaluate service providers using a structured methodology that combines:

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

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Ability to deliver
Focus
Clutch Leaders Matrix

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

1 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 GeekyAnts
12 INOXOFT
13 Scopic
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. 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
  12. 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
  13. Scopic Logotype

    Scopic

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

    Ability to deliver

    39.3/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    25% Web Development
    25% JavaScript
    75% 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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