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Home Web Developers JavaScript

Top JavaScript Developers

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

21,454 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 87 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

    50% Web Development
    50% Custom Software Development

    Focus Areas

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

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

    See all 87 projects
    6 of 6 reviews are 5 stars
    1 new review for Web Development services
    $10,000 – $49,000 avg. project cost

    Reviewed 6 times in the past 6 months

    Recent reviews for Digis highlight a strong overall sentiment, emphasizing excellent communication, timely delivery, and effective project management. Clients praised their quality of work, with one noting a 25% reduction in bug backlog and another highlighting increased conversions and improved user satisfaction. Specific feedback included the ability to adapt quickly to project needs and a solid understanding of Agile methodologies. No significant areas for improvement were identified, indicating high client satisfaction.
    Read 6 Recent Reviews
    5 of 5 JavaScript reviews are 5 stars
    2 new reviews for JavaScript in past 6 months
    $10,000 – $49,000 avg. project cost

    JavaScript Experience

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

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

    Web Development PROJECT HIGHLIGHT

    Development Staff Augmentation for Online Cooking Platform

    5.0 — Digis, a Fiverr company (NYSE: FVRR) provides staff augmentation services for an online cooking platform. The team is fully integrated into the client's existing agile squads and contributes to the Read more
    Read 22 Reviews
    $50,000 Best for Small Companies $75,000 Best for Medium Companies $100,000 Best for Enterprises

    Custom Product Development

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

    Not yet reviewed

    $250,000+
    $150 - $199 / hr
    250 - 999
    Atlanta, GA

    Services provided

    10% Web Development
    20% AR/VR Development
    20% Business Consulting +3
    20% E-Commerce Development
    20% Mobile App Development
    10% Commercial Brokerage Services

    Focus Areas

    10% JavaScript
    20% ASP.NET
    20% Java +3
    20% Python
    20% Swift
    10% SQL

    My LLC, an AR/VR development company, is headquartered in Atlanta, Georgia. The team specializes in AR/VR development and E-Commerce Development.

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  • FIRST RITE IT SERVICES PVT. LTD. Logotype

    4.5 1 review
    $1,000+
    $25 - $49 / hr
    50 - 249
    Kolkata, India

    Services provided

    15% Web Development
    15% Custom Software Development
    15% Web Design +8
    10% AR/VR Development
    10% E-Commerce Development
    10% Mobile App Development
    5% API Development
    5% Email Marketing
    5% IoT Development
    5% Marketing Strategy
    5% Social Media Marketing

    Focus Areas

    20% JavaScript
    25% PHP
    20% HTML5 +3
    15% Java
    10% Kotlin
    10% jquery

    First Rite IT Services Pvt. Ltd. is a boutique digital agency with over 10+ years of experience, offering comprehensive services in web design and development, mobile app, and custom software

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  • Ingenious Hi-Tech Pvt Ltd Logotype

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

    Services provided

    10% Web Development
    35% Search Engine Optimization
    20% Pay Per Click +5
    10% Low/No Code Development
    10% Social Media Marketing
    5% Content Marketing
    5% Digital Strategy
    5% Mobile App Development

    Focus Areas

    25% JavaScript
    10% PHP
    10% Python +9
    10% Ruby
    10% Typescript
    5% Kotlin
    5% Objective C
    5% Redux
    5% SQL
    5% Swift
    5% Visual Basic
    5% XML

    Ingenious Hi-Tech Pvt Ltd specializes in Website Development, Web Design, and digital marketing services, offering comprehensive solutions from logo creation to online development and SEO optimization. Client reviews highlight their timely delivery, responsiveness, and effective strategies, indicating successful web programming and marketing support that significantly enhanced the client's online business presence.

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  • GlobeSync Technologies Logotype

    5.0 1 review
    $5,000+
    $25 - $49 / hr
    50 - 249
    Ahmedabad, India

    Services provided

    10% Web Development
    10% AI Development
    10% Blockchain +7
    10% Custom Software Development
    10% Cybersecurity
    10% E-Commerce Development
    10% IoT Development
    10% Mobile App Development
    10% Robotics Process Automation
    10% UX/UI Design

    Focus Areas

    25% JavaScript
    25% Java
    25% PHP +1
    25% Python

    GlobeSync Technologies offers comprehensive services in Website Development, Web Design, and Online Development. The reviews highlight their ability to deliver complex projects within tight deadlines, showcasing effective project management and responsive communication. Clients appreciate the value for cost, high ratings, and their impressive capability to handle tasks that other companies avoid, although they could improve by focusing more on the planning phase.

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  • GreenSoft Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    Freelancer
    Bielsko-Biała, Poland

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Enterprise App Modernization +2
    20% Mobile App Development
    20% Other Application Development

    Focus Areas

    50% JavaScript
    50% PHP

    GreenSoft is a custom software development firm. They were launched in 2016, and their services include Custom Software Development and Enterprise App Modernization.

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  • In Phase Solutions Logotype

    Not yet reviewed

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

    Services provided

    50% Web Development
    20% Web Design
    10% Digital Strategy +3
    10% E-Commerce Development
    5% Email Marketing
    5% Mobile App Development

    Focus Areas

    20% JavaScript
    50% PHP
    30% Other programming & scripting languages

    In Phase Solutions is a web development company. They provide Web Development and Web Design and were founded in 2018.

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  • Logan Poynter Development Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    20% Social Media Marketing
    20% Web Design +2
    15% Content Marketing
    15% Search Engine Optimization

    Focus Areas

    40% JavaScript
    30% SQL
    20% PHP +1
    10% Python

    Launched in 2020, Logan Poynter Development is a web development firm. The team specializes in Web Development and Social Media Marketing and is headquartered in Somerset, Kentucky.

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  • CausewaySoft LTD Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    Freelancer
    Belfast, Northern Ireland

    Services provided

    80% Web Development
    20% Mobile App Development

    Focus Areas

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

    Based in Belfast, Northern Ireland, CausewaySoft LTD is a small web development company. The team provides Web Development and Mobile App Development.

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  • Uncanny Studio, LLC Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    Freelancer
    Brooklyn, NY

    Services provided

    30% Web Development
    30% Web Design
    15% E-Commerce Development +2
    15% UX/UI Design
    10% Graphic Design

    Focus Areas

    40% JavaScript
    50% PHP
    10% AJAX

    Located in Brooklyn, New York, Uncanny Studio, LLC is a web design company. They offer Web Design and Web Development and were launched in 2018.

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  • simon says web design Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    Freelancer
    Mansfield, England

    Services provided

    35% Web Development
    35% Search Engine Optimization
    30% Web Design

    Focus Areas

    35% JavaScript
    55% PHP
    10% SQL

    Launched in 2006, simon says web design is a small Mansfield, England-based SEO services firm. Their team provides Search Engine Optimization and Web Development.

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  • MindRuby Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    50 - 249
    Indore, India

    Services provided

    15% Web Development
    15% BI & Big Data Consulting & SI
    15% Cloud Consulting & SI +4
    15% Custom Software Development
    15% IoT Development
    15% Mobile App Development
    10% CRM Consulting and SI

    Focus Areas

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

    Launched in 2019, MindRuby is a midsize Indore, India-based big data company. Their services include BI & big data consulting & SI and cloud consulting & SI.

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  • Ignyous Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    Freelancer
    Las Vegas, NV

    Services provided

    35% Web Development
    35% Web Design
    30% E-Commerce Development

    Focus Areas

    35% JavaScript
    65% PHP

    Based in Las Vegas, Nevada, Ignyous is a small web design company. The team focuses on Web Design and Web Development.

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  • Emcom Technology Logotype

    Emcom Technology

    Not yet reviewed

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

    Services provided

    50% Web Development
    30% Search Engine Optimization
    20% Custom Software Development

    Focus Areas

    20% JavaScript
    35% HTML5
    35% PHP +1
    10% Other programming & scripting languages

    Emcom Technology is a website development company. Their small team of employees is in Springfield, Tennessee. Their team specializes in Web Development and Search Engine Optimization.

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  • Triophore Technologies Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Kattangal, India

    Services provided

    10% Web Development
    20% Blockchain
    20% Cloud Consulting & SI +4
    20% Mobile App Development
    10% AI Development
    10% IoT Development
    10% Low/No Code Development

    Focus Areas

    25% JavaScript
    20% Java
    15% Python +5
    10% Go
    10% Kotlin
    10% Rust
    5% C#
    5% HTML5

    Triophore Technologies is a cloud consulting & SI company. Founded in 2015, their team focuses on cloud consulting & SI and Web Development.

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  • DevDefy Logotype

    Not yet reviewed

    Undisclosed
    $50 - $99 / hr
    50 - 249
    Cincinnati, OH

    Services provided

    10% Web Development
    20% Custom Software Development
    20% DevOps Managed Services +3
    20% Generative AI
    20% Mobile App Development
    10% AR/VR Development

    Focus Areas

    25% JavaScript
    25% HTML5
    25% Typescript +1
    25% jquery

    Software development firm DevDefy is headquartered in Cincinnati, Ohio. They provide Custom Software Development and Mobile App Development and were established in 2017.

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  • TechLatitude Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% Digital Strategy
    15% E-Commerce Development +4
    15% Mobile App Development
    10% AR/VR Development
    10% Custom Software Development
    10% Web Design

    Focus Areas

    33% JavaScript
    44% PHP
    23% SQL

    TechLatitude is a Digital Strategy company. In Lahore, Pakistan, their team provides Digital Strategy and E-Commerce Development.

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  • D3 IT Solutions.com Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Blockchain
    10% Custom Software Development +7
    10% Direct Marketing
    10% E-Commerce Development
    10% Graphic Design
    10% Logo
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    40% PHP
    20% Python +2
    10% AJAX
    10% SQL

    Launched in 2015, D3 IT Solutions.com is a custom software development company. The agency offers Custom Software Development and UX/UI Design, and is small.

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  • MCB Soft Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    40% IoT Development
    30% Custom Software Development +1
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    30% PHP
    20% C++ +3
    10% AJAX
    10% C
    10% Java

    IoT development company MCB Soft was founded in 2014. In Brașov, Romania, the team focuses on IoT development and Custom Software Development.

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  • PMA Latam Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9
    Buenos Aires, Argentina

    Services provided

    20% Web Development
    20% Branding
    20% Content Marketing +2
    20% Marketing Strategy
    20% UX/UI Design

    Focus Areas

    10% JavaScript
    20% Other programming & scripting languages
    10% C++ +6
    10% Java
    10% Kotlin
    10% Objective C
    10% Python
    10% Ruby
    10% SQL

    PMA Latam is a branding firm established in 2012. Based in Buenos Aires, Argentina and Miami, Florida, the team offers Branding and Marketing Strategy.

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  • eHawkers Marketing Logotype

    Not yet reviewed

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

    Services provided

    17% Web Development
    20% E-Commerce Development
    20% Pay Per Click +5
    15% Social Media Marketing
    10% Mobile App Development
    8% Branding
    5% Graphic Design
    5% Search Engine Optimization

    Focus Areas

    30% JavaScript
    35% HTML5
    15% jquery +2
    10% Redux
    10% SQL

    EHawkers Marketing is a small PPC company. Founded in 2020, the team specializes in Pay Per Click and E-Commerce Development.

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  • Ibex Techlogic Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Mobile App Development
    8% Social Media Marketing +12
    6% Content Marketing
    6% Conversion Optimization
    6% Custom Software Development
    6% E-Commerce Development
    6% Graphic Design
    6% Logo
    6% Mobile & App Marketing
    6% Other Digital Marketing
    6% Pay Per Click
    6% Search Engine Optimization
    6% UX/UI Design
    6% Web Design

    Focus Areas

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

    Ibex Techlogic, an application development company, was founded in 2015. The company provides Mobile App Development and Web Development, and is small.

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  • Switch Business Solutions Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    35% IT Managed Services
    20% Custom Software Development +4
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design
    5% IT Strategy Consulting

    Focus Areas

    10% JavaScript
    10% ASP
    10% ASP.NET +9
    10% Java
    10% Kotlin
    10% SQL
    10% Swift
    10% Typescript
    5% Other programming & scripting languages
    5% PHP
    5% Python
    5% Ruby

    IT managed services company Switch Business Solutions provides IT managed services and Custom Software Development. They were launched in 2017.

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  • Level Up Development Logotype

    Not yet reviewed

    $50,000+
    Undisclosed
    10 - 49
    Indianapolis, IN

    Services provided

    10% Web Development
    20% Custom Software Development
    20% UX/UI Design +7
    10% Application Management & Support
    10% Blockchain
    10% Mobile App Development
    5% AI Development
    5% Application Testing
    5% Enterprise App Modernization
    5% IoT Development

    Focus Areas

    25% JavaScript
    10% ASP.NET
    10% C# +10
    10% Java
    5% C++
    5% Objective C
    5% Other programming & scripting languages
    5% Python
    5% Redux
    5% Ruby
    5% SQL
    5% Swift
    5% Typescript

    Level Up Development is an user experience design company. Established in 2010, the agency focuses on UX/UI Design and Custom Software Development.

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  • Pitechnologies Pvt. Ltd Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    40% Search Engine Optimization
    30% Web Design +2
    5% Content Marketing
    5% Mobile App Development

    Focus Areas

    15% JavaScript
    35% Other programming & scripting languages
    30% PHP +1
    20% Java

    Pitechnologies Pvt. Ltd is an Indore, India-based SEO company. Established in 2009, the team offers Search Engine Optimization and Web Design.

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  • Régens Plc Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Mobile App Development +5
    10% BI & Big Data Consulting & SI
    10% IT Strategy Consulting
    10% Unified Communications Consulting & SI
    5% Digital Strategy
    5% UX/UI Design

    Focus Areas

    15% JavaScript
    20% Java
    18% ASP.NET +7
    13% PHP
    8% SQL
    6% XML
    5% AJAX
    5% ASP
    5% C#
    5% Swift

    Based in Budapest, Hungary, Régens Plc is a custom software development firm. The team specializes in Custom Software Development and Mobile App Development.

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  • 30dps aka HubSpot Gurus Logotype

    Not yet reviewed

    $5,000+
    $150 - $199 / hr
    10 - 49
    Colorado Springs, CO

    Services provided

    25% Web Development
    15% Enterprise App Modernization
    10% UX/UI Design +9
    10% Web Design
    5% CRM Consulting and SI
    5% Content Marketing
    5% Conversion Optimization
    5% Digital Strategy
    5% E-Commerce Development
    5% Email Marketing
    5% Mobile App Development
    5% Search Engine Optimization

    Focus Areas

    10% JavaScript
    40% Other programming & scripting languages
    25% PHP +3
    10% ColdFusion
    10% SQL
    5% AJAX

    In Colorado Springs, Colorado, 30dps aka HubSpot Gurus is a web development company. Established in 1989, the team specializes in Web Development and Enterprise App Modernization.

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  • Sufle Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    40% Cloud Consulting & SI
    20% Custom Software Development +2
    20% Cybersecurity
    10% IT Managed Services

    Focus Areas

    25% JavaScript
    50% Python
    25% AJAX

    Sufle is a cloud consulting & SI company. The Istanbul, Türkiye-based company was founded in 2018. Their team focuses on cloud consulting & SI and Custom Software Development.

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  • Arobit Business Solutions Pvt. Ltd. Logotype

    Arobit Business Solutions Pvt. Ltd.

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile App Development
    10% Mobile & App Marketing +9
    10% Pay Per Click
    10% Social Media Marketing
    5% Content Marketing
    5% Digital Strategy
    5% ERP Consulting and SI
    5% Search Engine Optimization
    5% Web Design
    3% Branding
    2% Advertising

    Focus Areas

    15% JavaScript
    35% PHP
    20% AJAX +3
    20% SQL
    5% Python
    5% XML

    Arobit Business Solutions Pvt. Ltd. Is a small app development company launched in 2011. Their team focuses on Mobile App Development and Web Development.

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  • think3 Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% Other Marketing
    15% Search Engine Optimization +7
    10% Branding
    10% Graphic Design
    10% Marketing Strategy
    10% Web Design
    5% Digital Strategy
    5% E-Commerce Development
    5% Social Media Marketing

    Focus Areas

    20% JavaScript
    60% PHP
    20% SQL

    Headquartered in Derby, England, think3 is an Other Marketing company. Established in 2018, the team provides Other Marketing and Search Engine Optimization.

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  • One Search Pro Digital Marketing Agency Logotype

    Not yet reviewed

    $10,000+
    Undisclosed
    10 - 49
    Cheras, Malaysia

    Services provided

    15% Web Development
    20% Search Engine Optimization
    20% Social Media Marketing +3
    15% Branding
    15% Conversion Optimization
    15% Web Design

    Focus Areas

    20% JavaScript
    50% Other programming & scripting languages
    5% C +5
    5% C++
    5% Ember.js
    5% Java
    5% Python
    5% XML

    One Search Pro Digital Marketing Agency is a social media marketing company launched in 2019. The small team offers Social Media Marketing and Search Engine Optimization.

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  • Viste Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    80% E-Commerce Development

    Focus Areas

    15% JavaScript
    60% PHP
    15% HTML5 +1
    10% AJAX

    Launched in 2012, Viste is an e-commerce development firm. Located in Dobrich, Bulgaria and Varna, Bulgaria, the team provides E-Commerce Development and Web Development.

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  • Enigma Ai Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Branding
    10% Custom Software Development +9
    10% E-Commerce Development
    10% Low/No Code Development
    10% Mobile App Development
    10% Pay Per Click
    10% Social Media Marketing
    5% Content Writing Services
    5% Graphic Design
    5% Search Engine Optimization
    5% UX/UI Design

    Focus Areas

    25% JavaScript
    20% Java
    20% PHP +2
    20% Python
    15% Typescript

    Enigma Ai, a software development firm, was established in 2019. The team offers Custom Software Development and Branding.

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  • Techno Sharks Logotype

    Techno Sharks

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Graphic Design
    20% Mobile App Development +4
    20% Search Engine Optimization
    15% Low/No Code Development
    10% Custom Software Development
    5% UX/UI Design

    Focus Areas

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

    SEO services firm Techno Sharks provides Search Engine Optimization and Graphic Design. They are based in Sahibzada Ajit Singh Nagar, India.

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  • ImagiNET Ventures Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Chennai, India

    Services provided

    10% Web Development
    10% Branding
    10% Custom Software Development +7
    10% E-Commerce Development
    10% Low/No Code Development
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    25% JavaScript
    25% HTML5
    25% Other programming & scripting languages +1
    25% SQL

    Software development company ImagiNET Ventures provides Custom Software Development and Web Development. They were founded in 2006.

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  • Creative Tech Solution Logotype

    Creative Tech Solution

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Mobile App Development +5
    10% Logo
    10% Search Engine Optimization
    10% Social Media Marketing
    5% Graphic Design
    5% Web Design

    Focus Areas

    10% JavaScript
    30% PHP
    20% Python +4
    10% C
    10% C++
    10% Java
    10% SQL

    Website development firm Creative Tech Solution provides Web Development and Mobile App Development. They are in Ahmedabad, India and Sirohi, India.

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  • Webperfecto Logotype

    Webperfecto

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile App Development
    20% Search Engine Optimization +3
    20% Web Design
    10% Content Marketing
    10% Content Writing Services

    Focus Areas

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

    Founded in 2019, Webperfecto is a small SEO services firm. Their team offers Search Engine Optimization and Web Design.

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  • Search-In Tech Logotype

    Search-In Tech

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    20% JavaScript
    20% HTML5
    20% Python +2
    20% Redux
    20% Typescript

    Search-In Tech is a small mobile app development company founded in 2021. Their team focuses on Mobile App Development and Web Development.

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  • Diziwings Technologies Pvt. Ltd. Logotype

    5.0 1 review
    Undisclosed
    < $25 / hr
    2 - 9
    Kolkata, India

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +12
    10% Logo
    10% Web Design
    5% Content Marketing
    5% Conversion Optimization
    5% Digital Strategy
    5% Graphic Design
    5% Mobile App Development
    5% Pay Per Click
    5% Product Design
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design

    Focus Areas

    10% JavaScript
    40% PHP
    30% SQL +2
    10% AJAX
    10% Python

    Diziwings Technologies Pvt. Ltd. specializes in Website Development, particularly for WooCommerce platforms, while also offering Web Design and Web Programming services. Reviews highlight their efficient project management, keen understanding of client requirements, and ability to deliver high-quality results promptly. Clients commend their professionalism and the seamless communication during the project.

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  • Fagginapps (Pvt) Ltd Logotype

    Fagginapps (Pvt) Ltd

    5.0 1 review
    $10,000+
    $50 - $99 / hr
    10 - 49

    Services provided

    10% Web Development
    20% Graphic Design
    20% Mobile App Development +3
    20% Search Engine Optimization
    20% Social Media Marketing
    10% Low/No Code Development

    Focus Areas

    25% JavaScript
    25% PHP
    25% Python +1
    25% Swift

    Fagginapps (Pvt) Ltd specializes in Website Development and Web Design. Reviews highlight their ability to deliver user-friendly, fully functional websites with features like appointment scheduling. Clients commend their timely delivery, effective communication, and exceptional project management, indicating a high level of satisfaction and value for cost.

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  • Codility Logotype

    Codility

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% BI & Big Data Consulting & SI
    10% Custom Software Development +7
    10% E-Commerce Development
    10% IT Managed Services
    10% IT Strategy Consulting
    10% IoT Development
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% Ember.js +7
    10% Kotlin
    10% Objective C
    10% PHP
    10% Redux
    10% Ruby
    10% SQL
    10% Swift

    Codility is a custom software development company. The Denmark-based agency was established in 2018. Their services include Custom Software Development and UX/UI Design.

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  • Armi Technologies Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    Los Angeles, CA

    Services provided

    10% Web Development
    5% Back Office Outsourcing
    5% Call Center Services +16
    5% Content Marketing
    5% Content Moderation Services
    5% Content Writing Services
    5% Customer Service Outsourcing
    5% Data Annotation Services
    5% Document Digitization & Management
    5% ERP Consulting and SI
    5% HR Outsourcing
    5% IT Staff Augmentation
    5% Recruiting
    5% Recruitment Process Outsourcing
    5% Sales Outsourcing
    5% Social Media Marketing
    5% Staffing
    5% Transcription
    5% UX/UI Design

    Focus Areas

    25% JavaScript
    20% Typescript
    15% HTML5 +4
    15% SQL
    10% Other programming & scripting languages
    10% Redux
    5% Java

    Armi Technologies is a web development company. Their team is headquartered in Los Angeles, California. The company focuses on Web Development and Social Media Marketing.

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  • Medsolve Guru Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Search Engine Optimization
    20% Social Media Marketing +4
    20% Web Design
    15% Advertising
    10% UX/UI Design
    5% Mobile App Development

    Focus Areas

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

    Medsolve Guru, a social media marketing company, is based in Noida, India. They specialize in Social Media Marketing and Search Engine Optimization.

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  • B-Web Design Logotype

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

    Services provided

    25% Web Development
    25% Mobile App Development
    25% Social Media Marketing +2
    15% Mobile & App Marketing
    10% Branding

    Focus Areas

    10% JavaScript
    40% PHP
    30% ASP.NET +1
    20% ASP

    B-Web Design provides Web Development and Web Design services, receiving positive feedback for their collaborative approach and effective communication. Clients appreciated their reasonable costs and the immediate increase in business contacts post-project. Despite initial minor issues, B-Web Design's commitment to timely resolutions and lifetime support was highly valued.

    See all 1 projects
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  • ParaTech Software Solutions (Pvt.) Ltd. Logotype

    4.0 1 review
    $5,000+
    $50 - $99 / hr
    10 - 49
    Lahore, Pakistan

    Services provided

    10% Web Development
    45% ERP Consulting and SI
    30% Custom Software Development +2
    10% Mobile App Development
    5% IT Staff Augmentation

    Focus Areas

    20% JavaScript
    35% ASP.NET
    25% SQL +1
    20% HTML5

    ParaTech Software Solutions (Pvt.) Ltd. offers ERP solutions focused on accounts and HR. Reviews highlight their accuracy in project delivery and competitive pricing. Clients appreciate their ability to meet budgets and execute projects effectively, though some details about project management and areas for improvement remain unspecified.

    See all 1 projects
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  • JKL Technologies Private Limited Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    20% SQL
    10% AJAX +8
    10% ASP.NET
    10% Objective C
    10% PHP
    10% Swift
    5% C#
    5% C++
    5% Other programming & scripting languages
    5% XML

    JKL Technologies Private Limited is a custom software development company. Headquartered in Chennai, India, their team specializes in Custom Software Development and E-Commerce Development.

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  • Ingress IT Solutions Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% Custom Software Development +4
    10% Application Management & Support
    10% IT Managed Services
    10% IT Strategy Consulting
    10% Mobile App Development

    Focus Areas

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

    Ingress IT Solutions is a software development firm located in Ahmedabad, India. Launched in 2012, the team offers Custom Software Development and cloud consulting & SI.

    Read more
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  • Web Studio Agency Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Search Engine Optimization +3
    20% Web Design
    10% Custom Software Development
    10% Email Marketing

    Focus Areas

    10% JavaScript
    20% PHP
    10% AJAX +6
    10% ASP
    10% ASP.NET
    10% C#
    10% Java
    10% SQL
    10% XML

    Established in 1998, Web Studio Agency is an e-commerce development firm. The small team focuses on E-Commerce Development and Search Engine Optimization.

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  • Peers Chain Logotype

    Peers Chain

    4.8 3 reviews
    $1,000+
    $25 - $49 / hr
    2 - 9

    Services provided

    10% Web Development
    10% AI Development
    10% AR/VR Development +7
    10% Branding
    10% Generative AI
    10% Low/No Code Development
    10% Mobile App Development
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design

    Focus Areas

    21% JavaScript
    16% Python
    11% Other programming & scripting languages +8
    11% Redux
    11% SQL
    5% Go
    5% HTML5
    5% Java
    5% Kotlin
    5% PHP
    5% Swift

    Peers Chain offers Website Development, Web Design, and Web Programming services. Reviews on Clutch.co highlight their technical expertise, strong project management, and exceptional customer service. Clients commend their ability to deliver high-quality, tailored solutions efficiently while maintaining a proactive and transparent communication approach.

    See all 3 projects
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  • DK Techno's Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Mobile App Development +7
    10% Other Application Development
    5% Branding
    5% Content Marketing
    5% Mobile & App Marketing
    5% Other Digital Marketing
    5% Search Engine Optimization
    5% Social Media Marketing

    Focus Areas

    25% JavaScript
    20% PHP
    15% ASP.NET +4
    15% C#
    10% AJAX
    10% SQL
    5% Java

    DK Techno's is a software development company. Established in 2019, their team offers Custom Software Development and Web Development.

    Read more
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  • R(code)-Technolab Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    35% Mobile App Development
    10% AR/VR Development +5
    10% E-Commerce Development
    5% Application Management & Support
    5% Application Testing
    5% IT Managed Services
    5% IT Strategy Consulting

    Focus Areas

    11% JavaScript
    21% PHP
    11% ASP +10
    11% ASP.NET
    6% Kotlin
    5% AJAX
    5% Apex
    5% C++
    5% Ember.js
    5% Java
    5% Objective C
    5% Ruby
    5% SQL

    R(code)-Technolab is an app development firm. They are located in Digvijaygadh, India, and their services include Mobile App Development and Web Development.

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Ability to deliver
Focus
Clutch Leaders Matrix

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

1 Brainhub
2 xfive
3 ImageX
4 The Software House
5 ATEAM SOFT SOLUTIONS
6 Airdev
7 Xmartlabs
8 Toptal
9 Softonix
10 INOXOFT
11 Lizard Global
12 PopArt Studio
13 GeekyAnts
14 SpdLoad
15 Techuz InfoWeb Pvt. Ltd.

List of the Top 15 JavaScript Development Companies

  1. Brainhub Logotype

    Brainhub

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

    Ability to deliver

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

    Service focus

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

    xfive

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

    Ability to deliver

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

    Service focus

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

    ImageX

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

    Ability to deliver

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

    Service focus

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

    The Software House

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

    Ability to deliver

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

    Service focus

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

    ATEAM SOFT SOLUTIONS

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

    Ability to deliver

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

    Service focus

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

    Airdev

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

    Ability to deliver

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

    Service focus

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

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    Toptal

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

    Ability to deliver

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

    Service focus

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

    Softonix

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

    Ability to deliver

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

    Service focus

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

    INOXOFT

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

    Ability to deliver

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

    Service focus

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

    Lizard Global

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

    Ability to deliver

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

    Service focus

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

    PopArt Studio

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

    Ability to deliver

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

    Service focus

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

    GeekyAnts

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

    Ability to deliver

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

    Service focus

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

    SpdLoad

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

    Ability to deliver

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

    Service focus

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

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

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

    HTMLPanda

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

    Ability to deliver

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

    Service focus

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

    Sigma Software Group

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

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

    Brainium Information Technologies

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

    Ability to deliver

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

    Service focus

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

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

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

    Experion Technologies

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

    Ability to deliver

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

    Service focus

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

    Human Made

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

    Ability to deliver

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

    Service focus

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

    Probey Services

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

    Ability to deliver

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

    Service focus

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

    Blazity

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

    Ability to deliver

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

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

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

    Vincit

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

    Ability to deliver

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

    Service focus

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

    PowerGate Software

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

    Ability to deliver

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

    Service focus

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

    Arcanys

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

    Ability to deliver

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

    Service focus

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

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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