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Top JavaScript Developers

JavaScript powers everything from interactive websites to complex enterprise applications. Partnering with an experienced JavaScript development agency ensures your product is fast, secure, and ready to scale. Clutch makes it easy to find trusted providers by publishing in-depth, verified client reviews and transparent performance data. Use our filters to sort agencies by budget, location, framework expertise, and more. Looking for regional specialists? Browse firms in the United States, United Kingdom, or Canada to compare portfolios and pricing in your market. Start exploring today and shortlist partners that align with your goals.
Ratings Updated: February 8, 2026
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15 Leaders 15 Contenders

21,635 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 88 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

    50% Web Development
    50% Custom Software Development

    Focus Areas

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

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

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    Reviews mention Reliable

    Clients consistently highlight Digis, a Fiverr company (NYSE: FVRR), as a reliable partner, showcasing their commitment to timely delivery and effective communication. One client noted their engineers' ability to integrate seamlessly into existing teams, meeting commitments within established sprints and maintaining a predictable release cadence. Another emphasized the team's reliability in addressing issues promptly and their innovative approach to problem-solving. Overall, the sentiment reflects a strong trust in Digis' capabilities and dedication to client success.
    • Custom Software Development for Live Entertainment Platform
      5.0 Oct 8, 2024

      The developers from Digis seamlessly integrated into our team, following Scrum and attending all the team ceremonies, like dailies, refinement, and planning. Overall they delivered on time. Speed is good, and proactivity is high.

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    • Cloud Software System for SaaS Market Platform
      5.0 Aug 17, 2021

      The team has been innovative and reliable. Their experience and professionalism were admirable. They delivered successfully and on time. Any problems or bugs were addressed quickly.

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    • Development Staff Augmentation for Online Cooking Platform
      5.0 Dec 18, 2025

      They have been incredibly reliable. By working within our established two-week sprints, they consistently met their commitments. Their ability to estimate story points accurately allowed our team to maintain a predictable release cadence and hit every major product milestone on schedule.

      Read Full Review
    Read All Reviews
    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 of Digis, a Fiverr company (NYSE: FVRR), reflect a consistently positive sentiment among clients. Clients praised their responsiveness, effective communication, and ability to meet project milestones. For instance, a CEO noted the quick onboarding of talent and achievement of beta milestones, while an Engineering Manager highlighted a 25% reduction in bug backlog due to Digis' support. Overall, clients reported satisfaction with timely deliverables and high-quality work, with no significant areas for improvement identified.
    Read 6 Recent Reviews

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    United States (28) 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)
    $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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  • XIPETECH Logotype

    XIPETECH

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    35% PHP
    20% Other programming & scripting languages +4
    10% HTML5
    10% Kotlin
    10% Swift
    5% SQL

    XIPETECH , a web development company, was launched in 2013. The team offers Web Development and Custom Software Development and is in lucknow, India.

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  • GIS-point Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    10 - 49
    London, England

    Services provided

    20% Web Development
    30% Custom Software Development
    20% API Development +2
    20% Mobile App Development
    10% E-Commerce Development

    Focus Areas

    20% JavaScript
    20% Java
    20% Python +6
    15% C#
    5% ASP.NET
    5% Kotlin
    5% SQL
    5% Swift
    5% Typescript

    GIS-point is a custom software development firm. The team is located in London, England and Tallinn, Estonia, and their services include Custom Software Development and Web Development.

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  • NavyBits Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% AI Development
    20% ERP Consulting and SI +2
    20% Enterprise App Modernization
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    40% Python
    20% Typescript +2
    10% C#
    10% HTML5

    NavyBits is an ERP consulting and SI company. Their team is in Tarablus, Lebanon. The firm focuses on ERP consulting and SI and Web Development.

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  • SkySoft.tech Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    25% Custom Software Development
    10% AR/VR Development +10
    10% Mobile App Development
    5% Application Management & Support
    5% Application Testing
    5% Content Marketing
    5% IoT Development
    5% Logo
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design
    5% Web Design

    Focus Areas

    13% JavaScript
    22% AJAX
    13% ASP +4
    13% C#
    13% Objective C
    13% PHP
    13% Python

    Software development firm SkySoft.tech was established in 2016. Located in Vinnytsia, Ukraine, the team provides Custom Software Development and Web Development.

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  • Leafer Circular Design Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Business Consulting
    10% Graphic Design +7
    10% Manufacturing Consulting
    10% Packaging Design
    10% Product Design
    10% UX/UI Design
    10% Web Design
    5% IT Strategy Consulting
    5% Print Design

    Focus Areas

    40% JavaScript
    35% HTML5
    10% PHP +2
    10% SQL
    5% Typescript

    Business Consulting company Leafer Circular Design is headquartered in Tainan, Taiwan. The team focuses on Business Consulting and Web Design.

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  • SEO BEEK Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Search Engine Optimization
    10% Web Design +14
    5% Content Marketing
    5% Conversion Optimization
    5% Digital Strategy
    5% E-Commerce Development
    5% Email Marketing
    5% Graphic Design
    5% Logo
    5% Mobile & App Marketing
    5% Mobile App Development
    5% Other Digital Marketing
    5% Pay Per Click
    5% Social Media Marketing
    5% UX/UI Design
    5% Video Production

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% C# +7
    10% C++
    10% Java
    10% Kotlin
    10% PHP
    10% Perl
    10% Python
    10% XML

    SEO BEEK is a SEO services firm founded in 2014. The company offers Search Engine Optimization and Web Design.

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  • Evosoft Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    2 - 9
    Montevideo, Uruguay

    Services provided

    40% Web Development
    40% Mobile App Development
    10% AR/VR Development +1
    10% Custom Software Development

    Focus Areas

    11% JavaScript
    33% Typescript
    28% C# +2
    17% ASP.NET
    11% SQL

    Established in 2015, Evosoft, a small web development company, is in Montevideo, Uruguay. Their services include Web Development and Mobile App Development.

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  • incremental.design Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% Product Design
    20% Video Production +4
    10% Content Marketing
    10% Low/No Code Development
    10% Mobile App Development
    10% UX/UI Design

    Focus Areas

    25% JavaScript
    25% Other programming & scripting languages
    25% Typescript +2
    15% C++
    10% Java

    Established in 2020, incremental.design is a Product Design company. The company offers Product Design and UX/UI Design.

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  • TechAlchemy Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile App Development
    10% Application Management & Support +5
    10% Application Testing
    10% Custom Software Development
    10% E-Commerce Development
    10% HR Consulting
    10% Other Application Development

    Focus Areas

    10% JavaScript
    20% ASP.NET
    20% C# +4
    20% SQL
    10% Java
    10% Python
    10% Visual Basic

    TechAlchemy is a website development firm. The Faridabad, India-based company provides Web Development and Mobile App Development.

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  • Nama Coders Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49
    Riyadh, Saudi Arabia

    Services provided

    20% Web Development
    20% Mobile App Development
    10% API Development +5
    10% Custom Software Development
    10% DevOps Managed Services
    10% E-Commerce Development
    10% Microservices Architecture Services
    10% Other Application Development

    Focus Areas

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

    Nama Coders is a web development company. They are located in Riyadh, Saudi Arabia and have small team. They offer Web Development and Mobile App Development.

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  • UV Designs Inc. Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    35% Web Design
    20% Search Engine Optimization +2
    10% Graphic Design
    10% Social Media Marketing

    Focus Areas

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

    Located in Vaughan, Canada, UV Designs Inc. Is a web design agency. They focus on Web Design and Web Development and were launched in 2010.

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  • Juicymo Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    30% Mobile App Development
    20% Graphic Design +2
    20% UX/UI Design
    10% IoT Development

    Focus Areas

    25% JavaScript
    25% Java
    25% Ruby +1
    25% Swift

    Mobile app development company Juicymo was established in 2013. The team focuses on Mobile App Development and UX/UI Design.

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  • a&o mediendesign GmbH Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Bremen, Germany

    Services provided

    15% Web Development
    15% Advertising
    15% Digital Strategy +4
    15% Graphic Design
    15% Marketing Strategy
    15% Web Design
    10% Search Engine Optimization

    Focus Areas

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

    A&o mediendesign GmbH is an Advertising company located in Bremen, Germany. They provide Advertising and Digital Strategy and were founded in 2003.

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  • Schlachter Informatik GmbH Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Dresden, Germany

    Services provided

    25% Web Development
    20% Mobile App Development
    15% IT Strategy Consulting +4
    10% AI Development
    10% BI & Big Data Consulting & SI
    10% Cloud Consulting & SI
    10% Cybersecurity

    Focus Areas

    20% JavaScript
    80% Go

    Schlachter Informatik GmbH is a web development company. The Dresden, Germany-based company was established in 2018. Their team offers Web Development and Mobile App Development.

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  • Symphony Software Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    10 - 49
    Brookfield, WI

    Services provided

    25% Web Development
    25% Custom Software Development
    25% Mobile App Development +2
    15% Web Design
    10% E-Commerce Development

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP +7
    10% ASP.NET
    10% Kotlin
    10% Objective C
    10% PHP
    10% Python
    10% Redux
    10% Swift

    Symphony Software, a custom software development company, is in Brookfield, Wisconsin. Established in 2011, the team offers Custom Software Development and Web Development.

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  • Assimilate Technologies Pvt. Ltd Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +10
    10% Low/No Code Development
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design
    5% AI Development
    5% Application Testing
    5% Cloud Consulting & SI
    5% Enterprise App Modernization
    5% IT Managed Services
    5% IT Strategy Consulting

    Focus Areas

    10% JavaScript
    20% Python
    10% ASP.NET +8
    10% Java
    10% PHP
    10% SQL
    10% Visual Basic
    5% AJAX
    5% ASP
    5% C#
    5% XML

    Founded in 2018, Assimilate Technologies Pvt. Ltd is an app development firm. The company specializes in Mobile App Development and Web Design.

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  • CZ Consulting Logotype

    Not yet reviewed

    Undisclosed
    $100 - $149 / hr
    Freelancer
    Gaithersburg, MD

    Services provided

    20% Web Development
    30% Custom Software Development
    20% Mobile App Development +5
    10% Cloud Consulting & SI
    5% Business Consulting
    5% Digital Strategy
    5% IT Managed Services
    5% Other IT Consulting and SI

    Focus Areas

    20% JavaScript
    30% Kotlin
    15% SQL +3
    15% Swift
    10% Go
    10% Java

    CZ Consulting is a custom software development firm. The team offers Custom Software Development and Web Development, and the company is based in Gaithersburg, Maryland.

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  • Brhyt™ Logotype

    Not yet reviewed

    $1,000+
    $150 - $199 / hr
    2 - 9
    Chicago, IL

    Services provided

    10% Web Development
    15% Video Production
    10% Branding +12
    10% Web Design
    5% Business Consulting
    5% E-Commerce Development
    5% Graphic Design
    5% Logo
    5% Market Research
    5% Marketing Strategy
    5% Packaging Design
    5% Print Design
    5% Product Design
    5% Product Marketing
    5% UX/UI Design

    Focus Areas

    35% JavaScript
    35% HTML5
    20% jquery +1
    10% Python

    Video production agency Brhyt™ was established in 2020. Located in Chicago, Illinois, the team focuses on Video Production and Branding.

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  • Next Digital Agency Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9
    Sheffield, England

    Services provided

    15% Web Development
    20% E-Commerce Development
    20% Search Engine Optimization +4
    15% Pay Per Click
    15% Web Design
    10% Conversion Optimization
    5% Social Media Marketing

    Focus Areas

    25% JavaScript
    25% HTML5
    25% PHP +1
    25% SQL

    Next Digital Agency, a small SEO services firm, is headquartered in Sheffield, England. Their services include Search Engine Optimization and E-Commerce Development.

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  • Devenz Studio Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9
    Óbidos, Portugal

    Services provided

    20% Web Development
    20% Branding
    15% Custom Software Development +3
    15% E-Commerce Development
    15% Product Design
    15% UX/UI Design

    Focus Areas

    20% JavaScript
    40% PHP
    15% ASP.NET +2
    15% Typescript
    10% SQL

    Branding company Devenz Studio is headquartered in Óbidos, Portugal. Their services include Branding and Web Development.

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  • jfd,kfd, Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9
    Lahore, Pakistan

    Services provided

    20% Web Development
    20% AI Development
    20% Custom Software Development +2
    20% Mobile App Development
    20% Web Design

    Focus Areas

    10% JavaScript
    30% Other programming & scripting languages
    20% HTML5 +4
    15% Typescript
    10% SQL
    10% jquery
    5% Java

    Jfd,kfd, is a web design company. Headquartered in Lahore, Pakistan, the firm was established in 2024. Their team provides Web Design and Custom Software Development.

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  • Efforts Solutions IT Logotype

    Efforts Solutions IT

    5.0 1 review
    $1,000+
    < $25 / hr
    50 - 249

    Services provided

    20% Web Development
    20% Mobile App Development
    10% Search Engine Optimization +10
    5% AI Development
    5% Application Management & Support
    5% Custom Software Development
    5% Cybersecurity
    5% E-Commerce Development
    5% IT Managed Services
    5% Pay Per Click
    5% Social Media Marketing
    5% UX/UI Design
    5% Web Design

    Focus Areas

    10% JavaScript
    20% ASP.NET
    20% C# +4
    20% PHP
    10% AJAX
    10% Java
    10% Swift

    Efforts Solutions IT provides specialized services in Website Development and Web Design, particularly for complex projects such as healthcare portals. Across their reviews, clients commend their flexibility, dedication, and effective collaboration, highlighting their capacity to offer valuable business direction and advice.

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  • SHARESOFT TECHNOLOGY Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +7
    10% Email Marketing
    10% Mobile & App Marketing
    10% Mobile App Development
    10% Pay Per Click
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    20% AJAX
    20% Kotlin +2
    20% PHP
    20% Ruby

    SHARESOFT TECHNOLOGY is a software development company. Established in 2014, the team specializes in Custom Software Development and UX/UI Design.

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  • Sysquare Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Custom Software Development
    20% Mobile App Development +8
    15% IT Managed Services
    8% UX/UI Design
    5% AI Development
    5% Application Management & Support
    5% E-Commerce Development
    5% Market Research
    5% Web Design
    2% Social Media Marketing

    Focus Areas

    15% JavaScript
    30% Java
    30% Swift +3
    10% Objective C
    10% XML
    5% SQL

    Founded in 2012, Sysquare is a software development company. The team offers Custom Software Development and Mobile App Development.

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  • ADSWORKS Logotype

    ADSWORKS

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9

    Services provided

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

    Focus Areas

    15% JavaScript
    40% C#
    15% SQL +3
    15% Typescript
    10% ASP.NET
    5% jquery

    ADSWORKS is a small Monroe Township, New Jersey-based custom software development company. The team provides Custom Software Development and Web Development.

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  • Applied Visions Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Northport, NY

    Services provided

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

    Focus Areas

    11% JavaScript
    22% C#
    22% SQL +6
    11% Objective C
    11% Swift
    6% C++
    6% PHP
    6% Python
    5% Kotlin

    Applied Visions, an UX design agency, is headquartered in Northport, New York and Clifton Park, New York. Their services include UX/UI Design and IoT development.

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  • MoodforCode Logotype

    5.0 1 review
    $1,000+
    < $25 / hr
    10 - 49
    Jaffna, Sri Lanka

    Services provided

    20% Web Development
    20% Blockchain
    20% Mobile App Development +3
    20% UX/UI Design
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    20% JavaScript
    40% Typescript
    15% PHP +2
    15% SQL
    10% Kotlin

    MoodforCode offers specialized services in Website Development, Web Design, and Web Programming. The overall feedback highlights their customer-centric approach, effective project management, and open communication channels, leading to successful project implementations. Clients appreciate the value for cost and alignment with company values, although there is room for improvement in industry-specific business knowledge.

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  • JAM-Forte Technologies Ltd Logotype

    5.0 1 review
    Undisclosed
    < $25 / hr
    10 - 49
    Gwarinpa, Nigeria

    Services provided

    10% Web Development
    20% Branding
    15% Custom Software Development +5
    15% IT Strategy Consulting
    10% AI Development
    10% E-Commerce Development
    10% IT Managed Services
    10% Mobile App Development

    Focus Areas

    30% JavaScript
    25% PHP
    15% HTML5 +4
    10% Python
    10% SQL
    5% Java
    5% XML

    JAM-Forte Technologies Ltd specializes in Website Development, offering services such as building web platforms and school management systems. Clients praise their impressive communication, timely delivery, and alignment with company values, making them a reliable choice for Web Dev projects. The overall feedback highlights their professional approach and cost-effective solutions.

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  • NestedKode Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    25% Branding
    25% Social Media Marketing +3
    20% E-Commerce Development
    10% Graphic Design
    10% Low/No Code Development

    Focus Areas

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

    Established in 2017, NestedKode is a branding company. The team offers Branding and Social Media Marketing.

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  • Web Mobile Solutions Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Baulkham Hills, Australia

    Services provided

    15% Web Development
    15% Custom Software Development
    15% E-Commerce Development +4
    15% Mobile App Development
    15% Search Engine Optimization
    15% Web Design
    10% Cloud Consulting & SI

    Focus Areas

    25% JavaScript
    25% HTML5
    25% PHP +1
    25% Python

    Web Mobile Solutions, a SEO company, was founded in 2014. The company provides Search Engine Optimization and Web Design, and is small.

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  • Anatech Global Consultancy Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Mobile App Development +3
    20% UX/UI Design
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    20% JavaScript
    15% Java
    15% Python +9
    10% SQL
    5% ASP.NET
    5% C#
    5% C++
    5% HTML5
    5% Kotlin
    5% PHP
    5% Ruby
    5% jquery

    Anatech Global Consultancy, an UX design company, was established in 2021. The agency specializes in UX/UI Design and Web Development.

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  • Cloudlem Pvt Ltd Logotype

    5.0 2 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Gilgit, Pakistan

    Services provided

    15% Web Development
    40% Cloud Consulting & SI
    15% AI Development +2
    15% DevOps Managed Services
    15% IT Managed Services

    Focus Areas

    15% JavaScript
    20% Python
    20% SQL +4
    15% Other programming & scripting languages
    15% Typescript
    10% PHP
    5% HTML5

    Cloudlem (Pvt) Ltd is a Gilgit‑based DevOps & cloud consulting firm founded in 2022. They specialize in full-cycle DevOps and cloud engineering services, automating CI/CD pipelines, container

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  • Agilerz Services (Private) Limited Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Mobile App Development +4
    10% Application Testing
    10% Enterprise App Modernization
    10% IT Staff Augmentation
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% C# +7
    10% Kotlin
    10% Objective C
    10% PHP
    10% Python
    10% SQL
    10% Swift
    10% Typescript

    Software development firm Agilerz Services (Private) Limited is in Lahore, Pakistan. They focus on Custom Software Development and Mobile App Development and were established in 2019.

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  • Blåsmo Development Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    Freelancer
    Trondheim, Norway

    Services provided

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

    Focus Areas

    30% JavaScript
    30% HTML5
    30% Typescript +1
    10% Other programming & scripting languages

    Blåsmo Development, a website development company, was founded in 2021. The team focuses on Web Development and Web Design.

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  • mad.Design GmbH Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Content Marketing
    20% Conversion Optimization +2
    20% Email Marketing
    20% Web Design

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% C# +4
    10% PHP
    10% Perl
    10% Python
    10% SQL

    Mad.Design GmbH is a Stuttgart, Germany-based Content Marketing company. They offer Content Marketing and Email Marketing.

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  • DevRevel Logotype

    DevRevel

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile App Development
    10% Custom Software Development +5
    10% Enterprise App Modernization
    10% IT Strategy Consulting
    10% Low/No Code Development
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    20% JavaScript
    20% Typescript
    15% PHP +6
    10% HTML5
    10% Python
    10% jquery
    5% AJAX
    5% Ember.js
    5% XML

    In Pune, India, DevRevel is a software development firm. Their services include Custom Software Development and Web Development.

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  • Codep Tech Logotype

    Codep Tech

    Not yet reviewed

    $1,000+
    Undisclosed
    50 - 249

    Services provided

    33% Web Development
    34% Mobile App Development
    33% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% HTML5 +7
    10% Kotlin
    10% Objective C
    10% PHP
    10% Python
    10% Redux
    10% SQL
    10% Visual Basic

    Codep Tech is a Lagos, Nigeria-based app development firm. Launched in 2012, the team offers Mobile App Development and Web Design.

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  • Blue Hill Technologies Pvt. Ltd. Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Digital Strategy
    10% E-Commerce Development +11
    10% Mobile App Development
    10% Social Media Marketing
    10% Web Design
    8% Search Engine Optimization
    6% Email Marketing
    5% AR/VR Development
    5% Custom Software Development
    5% Other Digital Marketing
    5% UX/UI Design
    3% AI Development
    3% IoT Development

    Focus Areas

    15% JavaScript
    30% PHP
    20% Swift +3
    15% Other programming & scripting languages
    10% AJAX
    10% SQL

    Blue Hill Technologies Pvt. Ltd. Is a Digital Strategy company. Founded in 2014, their team offers Digital Strategy and E-Commerce Development.

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  • Plasma Computing Group Logotype

    Not yet reviewed

    $10,000+
    $150 - $199 / hr
    50 - 249
    Dallas, TX

    Services provided

    20% Web Development
    20% BI & Big Data Consulting & SI
    20% Custom Software Development +2
    20% IT Staff Augmentation
    20% Web Design

    Focus Areas

    10% JavaScript
    50% ASP.NET
    20% PHP +3
    10% Java
    5% C#
    5% SQL

    Located in Dallas, Texas and Noida, India, Plasma Computing Group is a midsize software development company. Their services include Custom Software Development and BI & big data consulting & SI.

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  • Ibrandtech Logotype

    Ibrandtech

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Search Engine Optimization
    20% Social Media Marketing +7
    10% Branding
    10% Custom Software Development
    10% Mobile App Development
    5% Graphic Design
    5% Logo
    5% UX/UI Design
    5% Web Design

    Focus Areas

    20% JavaScript
    20% PHP
    20% Python +4
    15% ASP.NET
    10% SQL
    10% Swift
    5% Redux

    SEO services firm Ibrandtech is based in Pune, India. They specialize in Search Engine Optimization and Social Media Marketing and were launched in 2015.

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  • Tecocraft Infusion Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    50% Mobile App Development
    15% E-Commerce Development +1
    15% Wearable App Development

    Focus Areas

    10% JavaScript
    15% Kotlin
    15% Objective C +4
    15% PHP
    15% Python
    15% SQL
    15% Swift

    App development firm Tecocraft Infusion Pvt Ltd is in Surat, India. Established in 2017, the team provides Mobile App Development and Web Development.

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  • Moldotech Logotype

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

    Services provided

    20% Web Development
    20% Application Testing
    20% Mobile App Development +4
    10% CRM Consulting and SI
    10% ERP Consulting and SI
    10% Graphic Design
    10% UX/UI Design

    Focus Areas

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

    Moldotech specializes in web development, integration, and UI/UX design, with a particular focus on mobile app development. Clients consistently praise the company for its efficient project management, timely delivery, and high-quality design work, emphasizing Moldotech's ability to swiftly address concerns and integrate feedback effectively.

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  • Prime Source Innovations Logotype

    Prime Source Innovations

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% AI Development
    10% Application Management & Support +7
    10% Application Testing
    10% Blockchain
    10% Custom Software Development
    10% IT Strategy Consulting
    10% IoT Development
    10% Mobile App Development
    10% Other Application Development

    Focus Areas

    11% JavaScript
    11% Java
    8% Kotlin +14
    5% C
    5% C#
    5% C++
    5% Go
    5% HTML5
    5% Objective C
    5% Other programming & scripting languages
    5% PHP
    5% Python
    5% Redux
    5% Ruby
    5% SQL
    5% Swift
    5% XML

    IT strategy consulting company Prime Source Innovations is headquartered in Almaty, Kazakhstan. The team provides IT strategy consulting and Custom Software Development.

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  • TauriX Digital Solutions Logotype

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

    Services provided

    30% Web Development
    15% Search Engine Optimization
    15% Social Media Marketing +4
    10% AI Consulting
    10% E-Commerce Development
    10% IT Strategy Consulting
    10% UX/UI Design

    Focus Areas

    30% JavaScript
    30% PHP
    20% Typescript +2
    10% HTML5
    10% SQL

    Next-gen Digital Solutions for Your Business - Empowering Small Businesses to Grow. TauriX Digital Solutions is a Melbourne-based digital studio providing integrated web, branding, content, and AI

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  • Coden Logotype

    4.5 1 review
    $1,000+
    < $25 / hr
    2 - 9
    Bengaluru, India

    Services provided

    10% Web Development
    10% Application Management & Support
    10% Application Testing +7
    10% Custom Software Development
    10% E-Commerce Development
    10% IT Strategy Consulting
    10% Logo
    10% Mobile App Development
    10% Search Engine Optimization
    10% UX/UI Design

    Focus Areas

    55% JavaScript
    20% HTML5
    15% Typescript +1
    10% Redux

    Coden offers personalized IT solutions, including the development of e-commerce applications. Clients laud Coden for their ability to deliver custom-made services with efficiency and reduced human errors, although there's a suggestion for expanding their services to include digital marketing. The company’s project management is generally praised, despite occasional delays in phases.

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  • Bounceball Logotype

    Bounceball

    5.0 1 review
    $1,000+
    $100 - $149 / hr
    2 - 9

    Services provided

    10% Web Development
    20% UX/UI Design
    15% Product Design +6
    10% Architectural Design
    10% Conversion Optimization
    10% Low/No Code Development
    10% Mobile App Development
    10% Web Design
    5% Digital Strategy

    Focus Areas

    55% JavaScript
    45% ASP

    Bounceball specializes in heuristic evaluations and UX audits, providing cost-effective and high-quality solutions. Reviews highlight their quick project turnaround, effective communication, and alignment with client values. Clients particularly commend Bounceball's thought leadership and the overall value for cost, noting no significant areas for improvement.

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  • Digitrendz Logotype

    Digitrendz

    5.0 1 review
    Undisclosed
    Undisclosed
    2 - 9

    Services provided

    10% Web Development
    10% Affiliate Marketing
    10% Content Marketing +7
    10% E-Commerce Development
    10% Email Marketing
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Video Marketing

    Focus Areas

    50% JavaScript
    50% PHP

    Digitrendz offers expertise in digital marketing services, including SEO optimization and social media campaigns. Reviews highlight their ability to significantly boost online presence and customer engagement. Clients commend Digitrendz for their professionalism, responsiveness, and dedication to success, which has resulted in increased website traffic, conversion, and consistent lead generation, making them a highly recommended partner for enhancing digital presence.

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  • Elevate Code Logotype

    4.5 1 review
    $5,000+
    $50 - $99 / hr
    2 - 9
    Morton, PA

    Services provided

    25% Web Development
    25% Generative AI
    15% AI Development +3
    15% Custom Software Development
    10% Low/No Code Development
    10% UX/UI Design

    Focus Areas

    35% JavaScript
    35% Python
    10% PHP +2
    10% SQL
    10% Typescript

    Elevate Code specializes in developing advanced web applications, focusing on semantic search engines and user-friendly interfaces to enhance data navigation and retrieval. Client reviews highlight their proficiency in delivering relevant and accurate results, cost-effective solutions, and maintaining strong communication with clients, ensuring timely project management. Elevate Code is praised for balancing professional expertise with adherence to client vision, providing exceptional value and service.

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  • Mathsistor Logotype

    Mathsistor

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9

    Services provided

    50% Web Development
    25% AI Development
    25% Mobile App Development

    Focus Areas

    10% JavaScript
    80% Python
    10% SQL

    Small website development firm Mathsistor, is located in Quito, Ecuador. The team specializes in Web Development and Artificial Intelligence.

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  • Silkway Labs Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    2 - 9
    Karagandy, Kazakhstan

    Services provided

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

    Focus Areas

    30% JavaScript
    30% Java
    30% Swift +1
    10% SQL

    Silkway Labs is an application development company. They are based in Karagandy, Kazakhstan and have small team. Their team offers Mobile App Development and Web Development.

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Ability to deliver
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Clutch Leaders Matrix

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

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

List of the Top 15 JavaScript Development Companies

  1. 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
    75% JavaScript
    50% Other
    View Profile Visit Website
  2. 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
  3. xfive Logotype

    xfive

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

    Ability to deliver

    39.5/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

    70% Web Development
    50% JavaScript
    30% Other
    View Profile Visit Website
  4. The Software House Logotype

    The Software House

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

    Ability to deliver

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

    Service focus

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

    ATEAM SOFT SOLUTIONS

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

    Ability to deliver

    38.1/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

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

    Airdev

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

    Ability to deliver

    39.1/40.0
    19.8/20 Reviews
    9.6/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

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

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    Softonix

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

    Ability to deliver

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

    Service focus

    70% Web Development
    50% JavaScript
    30% Other
    View Profile Visit Website
  9. Toptal Logotype

    Toptal

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

    Ability to deliver

    39.5/40.0
    19.6/20 Reviews
    9.9/10 Clients & Experience
    10/10 Market Presence

    Service focus

    15% Web Development
    25% JavaScript
    85% Other
    View Profile Visit Website
  10. Lizard Global Logotype

    Lizard Global

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

    Ability to deliver

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

    Service focus

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

    INOXOFT

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

    Ability to deliver

    39.8/40.0
    19.8/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  12. PopArt Studio Logotype

    PopArt Studio

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

    Ability to deliver

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

    Service focus

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

    GeekyAnts

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

    Ability to deliver

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

    Service focus

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

    SpdLoad

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

    Ability to deliver

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

    Service focus

    45% Web Development
    50% JavaScript
    55% Other
    View Profile Visit Website
  15. Brainium Information Technologies Logotype

    Brainium Information Technologies

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

    Ability to deliver

    36.7/40.0
    19.4/20 Reviews
    9/10 Clients & Experience
    8.4/10 Market Presence

    Service focus

    35% Web Development
    30% JavaScript
    65% Other
    View Profile Visit Website
  16. HTMLPanda Logotype

    HTMLPanda

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

    Ability to deliver

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

    Service focus

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

    Sigma Software Group

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

    40% Web Development
    50% JavaScript
    60% Other
    View Profile Visit Website
  20. Techuz InfoWeb Pvt. Ltd. Logotype

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

    36.4/40.0
    16.8/20 Reviews
    10/10 Clients & Experience
    9.6/10 Market Presence

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  21. WPWeb Infotech Logotype

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

    65% Web Development
    20% JavaScript
    35% Other
    View Profile Visit Website
  22. Human Made Logotype

    Human Made

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

    Ability to deliver

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

    Service focus

    100% Web Development
    30% JavaScript
    View Profile Visit Website
  23. Arcanys Logotype

    Arcanys

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

    Ability to deliver

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

    Service focus

    30% Web Development
    20% JavaScript
    70% Other
    View Profile Visit Website
  24. Experion Technologies Logotype

    Experion Technologies

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

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

    Blazity

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

    Ability to deliver

    37.5/40.0
    18.4/20 Reviews
    10/10 Clients & Experience
    9.2/10 Market Presence

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

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

    Probey Services

    $1,000+
    < $25 / hr
    1,000 - 9,999
    London, England

    Ability to deliver

    36.5/40.0
    19.2/20 Reviews
    9.3/10 Clients & Experience
    8/10 Market Presence

    Service focus

    20% Web Development
    25% JavaScript
    80% Other
    View Profile Visit Website
  29. Vincit Logotype

    Vincit

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

    Ability to deliver

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

    Service focus

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

    Oshyn

    $25,000+
    $100 - $149 / hr
    50 - 249
    Long Beach, CA

    Ability to deliver

    36.2/40.0
    18.2/20 Reviews
    10/10 Clients & Experience
    8/10 Market Presence

    Service focus

    100% Web Development
    40% JavaScript
    View Profile Visit Website

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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