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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 10, 2026
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15 Leaders 15 Contenders

21,642 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Featured

    What are Featured Providers?

    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

    4.9 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.

    See all 88 projects

    Reviews mention High-quality work

    The sentiment regarding the high-quality work delivered by Digis is overwhelmingly positive. Clients consistently highlight the impressive quality of work, with one noting, 'The quality of their work and excellent communication stood out.' Another client stated, 'Their performance throughout the project was exemplary, and they met our expectations at every turn.' Overall, clients commend Digis for delivering high-quality solutions on time, with several expressing satisfaction with the results and the professionalism exhibited by the team.
    • IT Staff Aug & Software Dev for EdTech Company
      5.0 Apr 19, 2024

      We are incredibly impressed with the quality of work and have really appreciated how proactive Digis is. Their work quality, communication skills, and straightforward approach make them an incredibly dependable company you can count on.

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    • Custom Software Development for Digital Marketing Agency
      5.0 Apr 19, 2024

      Their performance throughout the project was exemplary, and they met our expectations at every turn. Their professional approach and the quality of their work were consistently above par, and we look forward to continuing this partnership.

      Read Full Review
    • IT Staff Augmentation for Software Dev Company
      5.0 Dec 31, 2023

      We appreciated how DIGIS consistently met deadlines with high-quality work. Overall, they offer excellent value for the price, making them a standout choice.

      Read Full Review
    • UI/UX Design, Mobile App & Web Dev for Sports Equipment Co
      5.0 Apr 26, 2023

      All our developers are based in Ukraine, and their work quality is excellent. Digis’ developers have hit every milestone and goal we’ve required, and they’ve done it during the Russian Invasion of Ukraine, which is really impressive.

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    • Mobile App Dev & UI/UX Design for FinTech Startup
      5.0 Jul 24, 2020

      I’m impressed with the quality of their work to date. It’s a very positive experience compared to what I’ve experienced with other technical teams regarding communication, collaboration, and timelines.

      Read Full Review
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    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
    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

    Hosting Platform Development for Advertising & Marketing Co

    4.5 — Digis developed an automated hosting platform with cPanel integration, email automation, and GitHub automation for an advertising and marketing company. Read more
    Read 22 Reviews

    Average Project Cost Breakdown

    $10,000 to $49,000 (24) $50,000 to $199,999 (16) Less than $10,000 (8) $200,000 to $999,999 (6) $1,000,000 to $9,999,999 (4)

    What Clients Have Said

    Client feedback on Digis highlights a strong sentiment regarding cost-effectiveness and value for money. Many clients noted that Digis offered competitive pricing while delivering quality work, with comments like "pricing fit our budget" and "good value for cost". Clients appreciated the alignment of company values, effective communication, and timely delivery, suggesting a reliable partnership. Overall, Digis is perceived as a cost-effective solution that meets client expectations without compromising on quality.
    Read All Reviews
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  • Anor Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    35% Mobile App Development
    20% Custom Software Development +2
    15% E-Commerce Development
    10% Application Management & Support

    Focus Areas

    20% JavaScript
    20% C#
    20% PHP +3
    20% SQL
    10% Kotlin
    10% Swift

    Anor is an application development company. The Lincoln, Nebraska-based agency provides Mobile App Development and Custom Software Development.

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  • HobbTech Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    40% Web Design
    30% UX/UI Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% Go +7
    10% Kotlin
    10% PHP
    10% Redux
    10% SQL
    10% Swift
    10% Typescript
    10% XML

    Web design company HobbTech was founded in 2020. The team offers Web Design and UX/UI Design and is based in Lagos, Nigeria.

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  • Creamos Logotype

    Creamos

    Not yet reviewed

    $10,000+
    $300+ / hr
    10 - 49

    Services provided

    10% Web Development
    10% AR/VR Development
    10% Advertising +7
    10% Branding
    10% Digital Strategy
    10% Graphic Design
    10% Mobile App Development
    10% Product Design
    10% UX/UI Design
    10% Web Design

    Focus Areas

    11% JavaScript
    12% SQL
    11% ASP +6
    11% C#
    11% C++
    11% Java
    11% Objective C
    11% PHP
    11% XML

    Advertising company Creamos was established in 2018. Based in London, England and Málaga, Spain, the team focuses on Advertising and UX/UI Design.

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  • Globex IT Solutions Logotype

    Globex IT Solutions

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Graphic Design
    25% Search Engine Optimization +1
    25% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% ASP.NET +7
    10% C#
    10% C++
    10% ColdFusion
    10% Other programming & scripting languages
    10% PHP
    10% Perl
    10% Ruby

    Located in New York, New York, Globex IT Solutions is a graphic design agency. The team offers Graphic Design and Search Engine Optimization.

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  • Flembee Logotype

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% IT Strategy Consulting +3
    20% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    30% JavaScript
    20% Python
    20% Redux +2
    20% SQL
    10% Swift

    Flembee specializes in Website Development, providing comprehensive solutions including interactive features and custom functionalities. Client feedback highlights their attentiveness to detail, effective communication, and ability to exceed expectations. Their project management is praised for timely delivery and collaborative approach.

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  • Birdwell Solutions Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% Blockchain
    20% Mobile App Development +13
    15% Low/No Code Development
    5% Application Management & Support
    5% Commercial Financing
    2% AI Development
    2% AR/VR Development
    2% Marketing Strategy
    2% Mobile & App Marketing
    2% UX/UI Design
    1% Custom Software Development
    1% Product Design
    1% Search Engine Optimization
    1% Social Media Marketing
    1% Web Design

    Focus Areas

    40% JavaScript
    30% C++
    15% C# +1
    15% Redux

    Based in Miami, Florida and New York City, New York, Birdwell Solutions is a small Blockchain company. The team focuses on Blockchain and Web Development.

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  • outofplace Logotype

    outofplace

    Not yet reviewed

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

    Services provided

    15% Web Development
    10% Application Management & Support
    10% Custom Software Development +7
    10% E-Commerce Development
    10% Enterprise App Modernization
    10% Graphic Design
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design
    5% AI Development

    Focus Areas

    35% JavaScript
    50% Typescript
    15% HTML5

    Outofplace is a web development company. Located in Warszawa, Poland, the team focuses on Web Development and Web Design.

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  • Fourarc Studio Private Limited Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% AI Development
    10% AR/VR Development +7
    10% Application Management & Support
    10% Custom Software Development
    10% E-Commerce Development
    10% Mobile App Development
    10% Other Application Development
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    18% JavaScript
    29% PHP
    18% XML +3
    12% Objective C
    12% Swift
    11% AJAX

    Fourarc Studio Private Limited, a software development firm, is based in Ahmedabad, India. Established in 2017, the team specializes in Custom Software Development and Artificial Intelligence.

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  • Codebeans Pvt Ltd Logotype

    Codebeans Pvt Ltd

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

    Codebeans Pvt Ltd is an UX company. The agency was launched in 2022. Their team focuses on UX/UI Design and Web Development.

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  • Alpha Bright Edge Technologies (Pvt) Ltd. Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    40% E-Commerce Development
    10% Graphic Design +3
    10% Low/No Code Development
    5% Logo
    5% Other Design

    Focus Areas

    25% JavaScript
    25% HTML5
    25% SQL +1
    25% Visual Basic

    Alpha Bright Edge Technologies (Pvt) Ltd., a web development firm, is headquartered in Lahore, Pakistan. The team offers Web Development and E-Commerce Development.

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  • LinkX Digital Logotype

    LinkX Digital

    Not yet reviewed

    $1,000+
    Undisclosed
    10 - 49

    Services provided

    35% Web Development
    35% Mobile App Development
    30% E-Commerce Development

    Focus Areas

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

    LinkX Digital, a website development company, offers Web Development and Mobile App Development. The company is based in Vadodara, India.

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  • Gecode Software House Logotype

    5.0 1 review
    $10,000+
    $25 - $49 / hr
    10 - 49
    Katowice, Poland

    Services provided

    25% Web Development
    60% Custom Software Development
    15% Mobile App Development

    Focus Areas

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

    At Gecode we are a dynamic software house based in Katowice, Poland, dedicated to transforming business visions into impactful digital realities. We specialize in crafting bespoke software solutions

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  • Technics Lab Logotype

    Technics Lab

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

    Services provided

    15% Web Development
    15% AI Development
    10% AI Consulting +6
    10% Custom Software Development
    10% E-Commerce Development
    10% Generative AI
    10% Low/No Code Development
    10% Mobile App Development
    10% UX/UI Design

    Focus Areas

    25% JavaScript
    15% Java
    15% Python +6
    10% C#
    10% SQL
    10% Typescript
    5% ASP.NET
    5% C
    5% C++

    Technics Lab specializes in Web Development, particularly in creating secure digital communication platforms. The reviews highlight their exceptional technical expertise, meticulous attention to detail, and strong project management capabilities. Clients consistently praise their commitment to privacy and security standards, seamless user experience design, and proactive, solution-oriented approach.

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  • Concentrical Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    10 - 49
    Beograd, Serbia

    Services provided

    30% Web Development
    30% Mobile App Development
    15% Custom Software Development +2
    15% Product Design
    10% IT Staff Augmentation

    Focus Areas

    10% JavaScript
    40% Python
    30% Ruby +2
    10% Java
    10% Swift

    Concentrical is a Camas, Washington-based web development firm. Established in 2020, the team specializes in Web Development and Mobile App Development.

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  • Smahile Hub Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    10% AJAX
    10% C# +8
    10% C++
    10% Java
    10% Kotlin
    10% PHP
    10% Python
    10% XML
    5% Redux
    5% SQL

    Smahile Hub is a custom software development firm. Located in Ojodu, Nigeria, the company provides Custom Software Development and Web Development.

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  • PIX USA Logotype

    Not yet reviewed

    $25,000+
    $100 - $149 / hr
    10 - 49
    New York, NY

    Services provided

    20% Web Development
    20% Mobile App Development
    20% Wearable App Development +4
    10% AI Development
    10% AR/VR Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    15% Java
    10% Ember.js +11
    5% Go
    5% HTML5
    5% Kotlin
    5% Objective C
    5% Python
    5% Redux
    5% Ruby
    5% SQL
    5% Swift
    5% Typescript
    5% backbone.js

    In New York, New York and Utrecht, Netherlands, PIX USA is a small web development company. Their services include Web Development and Mobile App Development.

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  • VTechWorks Logotype

    VTechWorks

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    20% JavaScript
    50% Typescript
    30% Go

    VTechWorks is an AI company. In Chennai, India, their team specializes in Artificial Intelligence and Custom Software Development.

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  • Web Techmedia Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    20% E-Commerce Development
    20% Mobile App Development +2
    20% Web Design
    10% Search Engine Optimization

    Focus Areas

    20% JavaScript
    30% PHP
    30% Python +1
    20% ASP.NET

    Established in 2012, Web Techmedia is a small web development company. Their services include Web Development and E-Commerce Development.

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  • Lemoon Web Logotype

    Not yet reviewed

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

    Services provided

    50% Web Development
    20% E-Commerce Development
    15% Custom Software Development +4
    5% Branding
    5% Search Engine Optimization
    3% Conversion Optimization
    2% Public Relations

    Focus Areas

    12% JavaScript
    75% PHP
    8% SQL +1
    5% AJAX

    Lemoon Web is a website development company. They are based in Olsztyn, Poland and have small team. They offer Web Development and E-Commerce Development.

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  • Hatchet Pty Ltd Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    2 - 9
    Perth, Australia

    Services provided

    15% Web Development
    15% Custom Software Development
    15% Other Application Development +9
    10% E-Commerce Development
    10% Web Design
    5% CRM Consulting and SI
    5% Digital Strategy
    5% ERP Consulting and SI
    5% Mobile & App Marketing
    5% Pay Per Click
    5% Search Engine Optimization
    5% UX/UI Design

    Focus Areas

    30% JavaScript
    50% PHP
    20% SQL

    Hatchet Pty Ltd is a software development company. The small Perth, Australia-based team focuses on Custom Software Development and Other Application Development. The agency was launched in 2015.

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  • Aplios Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

    In Quito, Ecuador, Aplios is a web design agency. Founded in 2015, the team provides Web Design and IT strategy consulting.

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  • SoftOcean GmbH Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    10 - 49
    Potsdam, Germany

    Services provided

    25% Web Development
    40% Custom Software Development
    25% Mobile App Development +1
    10% AR/VR Development

    Focus Areas

    15% JavaScript
    15% C++
    15% Go +5
    15% Java
    15% XML
    10% PHP
    10% SQL
    5% Other programming & scripting languages

    SoftOcean GmbH is a small Potsdam, Germany-based software development firm. Their services include Custom Software Development and Mobile App Development.

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  • Triumph Flow Technologies Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    25% Custom Software Development
    25% E-Commerce Development +2
    15% IT Managed Services
    15% Search Engine Optimization

    Focus Areas

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

    Triumph Flow Technologies, a software development firm, was established in 2018. The firm focuses on Custom Software Development and E-Commerce Development.

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  • Iblesoft Inc. Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Doral, FL

    Services provided

    10% Web Development
    20% Custom Software Development
    10% Application Management & Support +6
    10% Application Testing
    10% E-Commerce Development
    10% Enterprise App Modernization
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    20% ASP.NET
    10% AJAX +6
    10% ASP
    10% C#
    10% Other programming & scripting languages
    10% PHP
    10% SQL
    10% XML

    Iblesoft Inc. Is a midsize custom software development company headquartered in Doral, Florida and Hyderabad, India. The team provides Custom Software Development and Enterprise App Modernization.

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  • Mark Hatter Services Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    Freelancer
    Oliva, Spain

    Services provided

    75% Web Development
    25% Web Design

    Focus Areas

    35% JavaScript
    35% PHP
    30% HTML5

    Mark Hatter Services, a web development company, is located in Oliva, Spain. They offer Web Development and Web Design and were established in 2017.

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  • Accelerlab Technologies Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% AR/VR Development
    10% Application Testing +7
    10% Branding
    10% Custom Software Development
    10% E-Commerce Development
    10% Enterprise App Modernization
    10% Mobile App Development
    10% Search Engine Optimization
    10% Web Design

    Focus Areas

    10% JavaScript
    20% Other programming & scripting languages
    20% SQL +5
    10% Java
    10% Objective C
    10% PHP
    10% Python
    10% Swift

    Accelerlab Technologies Pvt Ltd is a custom software development company. They were founded in 2019 and offer Custom Software Development and Enterprise App Modernization.

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  • Lynks London Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    40% Web Design
    30% Search Engine Optimization +2
    10% Digital Strategy
    10% Social Media Marketing

    Focus Areas

    10% JavaScript
    50% Python
    30% PHP +1
    10% SQL

    Lynks London is a web design agency launched in 2012. Their team provides Web Design and Search Engine Optimization.

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  • Zemingo Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • ClaySys Technologies Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • ashleyidesign Logotype

    ashleyidesign

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    100% JavaScript

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

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  • Expert Web Designing Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • The Digital Ambassador Logotype

    The Digital Ambassador

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    30% JavaScript
    70% PHP

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

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  • AFFINTECH Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • NVISH Solutions Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Newark, CA

    Services provided

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

    Focus Areas

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

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

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  • OSITS Pakistan Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • Tech Arch Softwares Logotype

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

    Services provided

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

    Focus Areas

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

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

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  • Profex Tech Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • The Fashion Generation Logotype

    The Fashion Generation

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • Pexsol Interactive Logotype

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

    Services provided

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

    Focus Areas

    10% JavaScript
    80% PHP
    10% ASP.NET

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

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  • Atomos Technologies Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • NEX2GEN Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    30% JavaScript
    50% PHP
    20% Python

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

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  • Modernsoft Innovations Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    45% Custom Software Development
    10% Mobile App Development +3
    10% UX/UI Design
    10% Web Design
    5% AI Development

    Focus Areas

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

    Modernsoft Innovations is a software development firm. They were established in 2025, and their services include Custom Software Development and Web Development.

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    More responsive than most other service providers

    Modernsoft Innovations is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
    Get in Touch
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  • Kodkodkod Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • Web2Web Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • Safala Softech Logotype

    Safala Softech

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • Elantratech Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • Iconiceyes Graphic Designer Orlando LLC Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

    Read more
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  • Bridgestone Technologies & Associates Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Jaipur, India

    Services provided

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

    Focus Areas

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

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

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  • Pivotal Consulting Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Seattle, WA

    Services provided

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

    Focus Areas

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

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

    Read more
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  • Nearshore Portugal Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

    Read more
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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 xfive
2 ImageX
3 Brainhub
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. 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
  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. 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

    45% Web Development
    75% JavaScript
    55% 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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