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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: December 23, 2025
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15 Leaders 15 Contenders

21,452 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 87 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

    50% Web Development
    50% Custom Software Development

    Focus Areas

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

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

    See all 87 projects
    5 of 5 JavaScript reviews are 5 stars
    2 new reviews for JavaScript in past 6 months
    $10,000 – $49,000 avg. project cost

    JavaScript Experience

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

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

    Web Development PROJECT HIGHLIGHT

    Development Staff Augmentation for Online Cooking Platform

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

    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

    Clients consistently praised Digis for their competitive pricing and strong value for money. Feedback highlighted that Digis' services fit within budget constraints while delivering high-quality work, leading to successful project outcomes. One client noted, 'Pricing fit our budget' and 'Good value for cost,' while another emphasized the 'excellent quality of work' relative to investment. Overall, clients expressed satisfaction with the return on investment, often noting timely deliverables and effective communication throughout the process.
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    $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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  • Increments Inc. Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    50 - 249
    Dhaka, Bangladesh

    Services provided

    15% Web Development
    25% Custom Software Development
    25% Mobile App Development +5
    15% UX/UI Design
    5% API Development
    5% Enterprise App Modernization
    5% Generative AI
    5% IT Strategy Consulting

    Focus Areas

    15% JavaScript
    20% Python
    20% Redux +6
    15% SQL
    10% Kotlin
    5% AJAX
    5% Java
    5% Objective C
    5% Swift

    Custom software development firm Increments Inc. Was established in 2016. The midsize team specializes in Custom Software Development and Mobile App Development.

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  • Software Shrimps Inc Logotype

    Software Shrimps Inc

    Not yet reviewed

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

    Services provided

    15% Web Development
    20% Branding
    15% E-Commerce Development +4
    15% Mobile App Development
    15% Other Application Development
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    15% JavaScript
    25% PHP
    15% Java +5
    10% C#
    10% C++
    10% XML
    10% jquery
    5% Visual Basic

    Software Shrimps Inc is a branding firm. Their midsize team is based in Marietta, Georgia and Burbank, Illinois and provides Branding and Custom Software Development. The agency was founded in 2019.

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  • Marten Digitals Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    50 - 249
    Karachi, Pakistan

    Services provided

    10% Web Development
    10% E-Commerce Development
    10% Logo +7
    10% Mobile App Development
    10% Print Design
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Video Production
    10% Web Design

    Focus Areas

    20% JavaScript
    20% Typescript
    10% AJAX +5
    10% Other programming & scripting languages
    10% PHP
    10% Redux
    10% SQL
    10% jquery

    Marten Digitals is a social media marketing agency. Founded in 2019, the team specializes in Social Media Marketing and Search Engine Optimization.

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  • VinnovateLabz Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    25% Java
    10% HTML5 +7
    10% Kotlin
    10% PHP
    10% SQL
    10% Typescript
    5% Python
    5% XML
    5% jquery

    Founded in 2014, VinnovateLabz is a custom software development firm. The team specializes in Custom Software Development and Web Development and is in Bengaluru, India.

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  • VisionPlus Technologies Pvt. Ltd Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    50 - 249
    Lahore, Pakistan

    Services provided

    10% Web Development
    30% ERP Consulting and SI
    25% CRM Consulting and SI +2
    20% Custom Software Development
    15% Cloud Consulting & SI

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% Apex +2
    20% Java
    20% Python

    Established in 2003, VisionPlus Technologies Pvt. Ltd is a midsize Lahore, Pakistan-based ERP consulting and SI company. Their team specializes in ERP consulting and SI and CRM consulting and SI.

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  • DigiNautix Logotype

    DigiNautix

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% AI Development
    20% Blockchain +2
    20% Custom Software Development
    20% IT Staff Augmentation

    Focus Areas

    10% JavaScript
    20% Java
    20% PHP +3
    20% Swift
    20% jquery
    10% Python

    DigiNautix is an IT staff augmentation company launched in 2020. The midsize team specializes in IT staff augmentation and Custom Software Development.

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  • Tacnix Logotype

    Tacnix

    Not yet reviewed

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

    Services provided

    45% Web Development
    15% Custom Software Development
    15% IT Strategy Consulting +3
    10% E-Commerce Development
    10% Web Design
    5% UX/UI Design

    Focus Areas

    15% JavaScript
    30% PHP
    30% SQL +3
    15% HTML5
    5% Typescript
    5% jquery

    Launched in 2011, Tacnix is a web development company. Their services include Web Development and Custom Software Development.

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  • AJ Creative Studios Logotype

    AJ Creative Studios

    Not yet reviewed

    $1,000+
    < $25 / hr
    Freelancer

    Services provided

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

    Focus Areas

    40% JavaScript
    30% AJAX
    30% Redux

    AJ Creative Studios is a branding agency. The company is located in Jaipur, India. Their team focuses on Branding and Search Engine Optimization.

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  • Salt Square Logotype

    Not yet reviewed

    $25,000+
    $25 - $49 / hr
    50 - 249
    Tuzla Grad, Bosnia and Herzegovina

    Services provided

    10% Web Development
    30% Custom Software Development
    25% Mobile App Development +3
    20% AI Development
    10% Cloud Consulting & SI
    5% IoT Development

    Focus Areas

    20% JavaScript
    15% Python
    15% Typescript +8
    10% Kotlin
    10% Swift
    5% C#
    5% C++
    5% Java
    5% PHP
    5% Ruby
    5% SQL

    Salt Square is a midsize software development company located in Tuzla Grad, Bosnia and Herzegovina. Their services include Custom Software Development and Mobile App Development.

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  • Misfit Development Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    Freelancer
    Union Beach, NJ

    Services provided

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

    Focus Areas

    25% JavaScript
    30% PHP
    25% HTML5 +2
    10% AJAX
    10% jquery

    Misfit Development is a web development firm based in Union Beach, New Jersey. The team specializes in Web Development and E-Commerce Development.

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  • Sales Pipe Pro Inc. Logotype

    Sales Pipe Pro Inc.

    4.5 1 review
    $10,000+
    $100 - $149 / hr
    10 - 49

    Services provided

    20% Web Development
    20% CRM Consulting and SI
    10% Call Center Services +7
    10% Custom Software Development
    10% Low/No Code Development
    10% Mobile App Development
    5% API Development
    5% Application Management & Support
    5% DevOps Managed Services
    5% IT Managed Services

    Focus Areas

    15% JavaScript
    15% HTML5
    15% Java +4
    15% PHP
    15% Python
    15% SQL
    10% Other programming & scripting languages

    Sales Pipe Pro Inc. specializes in CRM software implementation and VOIP services. Customer feedback highlights their effective integration of CRM systems that streamline customer interactions and improve sales processes, along with timely project delivery and responsive support. However, some clients noted a need for more extensive post-implementation support.

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  • Nomizo Technology - Top Development Company in Saudi Arabia Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% E-Commerce Development
    25% Mobile App Development +2
    20% ERP Consulting and SI
    5% Custom Software Development

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% C++ +8
    10% Kotlin
    10% PHP
    10% Python
    10% SQL
    10% Swift
    10% Visual Basic
    5% AJAX
    5% Ember.js

    Nomizo Technology - Top Development Company in Saudi Arabia, a web development firm, was established in 2014. The agency offers Web Development and Mobile App Development, and is small.

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  • The Web Hustle Logotype

    The Web Hustle

    5.0 1 review
    $10,000+
    < $25 / hr
    2 - 9

    Services provided

    10% Web Development
    15% Custom Software Development
    15% IoT Development +9
    15% Mobile App Development
    10% Video Production
    5% Content Marketing
    5% Graphic Design
    5% Logo
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design
    5% Web Design

    Focus Areas

    15% JavaScript
    15% PHP
    10% AJAX +11
    10% Other programming & scripting languages
    5% ASP
    5% ASP.NET
    5% C
    5% C++
    5% Ember.js
    5% Kotlin
    5% Python
    5% Ruby
    5% SQL
    5% XML

    The Web Hustle offers web development services, with a focus on making contact forms functional. Reviews consistently highlight their professional, fast, and highly reliable service. Clients appreciate the good value for cost, timely delivery, and recommend them as a great choice for web development needs.

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  • Hoarway Technology Logotype

    Hoarway Technology

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

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

    Focus Areas

    15% JavaScript
    15% HTML5
    15% Java +4
    15% Kotlin
    15% PHP
    15% Python
    10% C#

    Hoarway Technology is a social media marketing firm. Their small team is in Mumbai, India. Their services include Social Media Marketing and Search Engine Optimization.

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  • IDEALCODE.dev Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    10 - 49
    Vilnius, Lithuania

    Services provided

    30% Web Development
    25% E-Commerce Development
    20% Custom Software Development +3
    10% AR/VR Development
    10% Mobile App Development
    5% UX/UI Design

    Focus Areas

    11% JavaScript
    21% Other programming & scripting languages
    16% PHP +6
    15% AJAX
    11% SQL
    11% Swift
    5% Objective C
    5% Visual Basic
    5% XML

    IDEALCODE.dev, a web development firm, was established in 2017. The company offers Web Development and E-Commerce Development, and is small.

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  • Happy Software Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    10 - 49
    Heroica Puebla de Zaragoza, Mexico

    Services provided

    16% Web Development
    25% E-Commerce Development
    15% Custom Software Development +7
    10% API Development
    10% Low/No Code Development
    10% Mobile App Development
    5% Business Consulting
    5% Microservices Architecture Services
    2% AI Consulting
    2% Generative AI

    Focus Areas

    25% JavaScript
    30% Typescript
    15% AJAX +2
    15% Redux
    15% SQL

    Happy Software is a small software development company founded in 2022. Their team specializes in Custom Software Development and E-Commerce Development.

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  • IQovate Labs Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    20% IT Strategy Consulting
    20% Mobile App Development +3
    10% API Development
    10% AR/VR Development
    10% Custom Software Development

    Focus Areas

    11% JavaScript
    17% ASP.NET
    17% Redux +5
    11% HTML5
    11% Java
    11% PHP
    11% SQL
    11% Typescript

    IQovate Labs is a web development firm. They provide Web Development and IT strategy consulting and were established in 2012. The company is in Ahmedabad, India and Dubai, United Arab Emirates.

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  • Specter Logotype

    5.0 1 review
    $10,000+
    $300+ / hr
    10 - 49
    Auburn, CA

    Services provided

    10% Web Development
    18% Low/No Code Development
    15% Custom Software Development +15
    10% Search Engine Optimization
    5% CRM Consulting and SI
    5% Cloud Consulting & SI
    5% Conversion Optimization
    5% Cybersecurity
    5% Digital Strategy
    5% IT Strategy Consulting
    5% Pay Per Click
    2% Application Management & Support
    2% Enterprise App Modernization
    2% IT Managed Services
    2% IT Staff Augmentation
    2% Unified Communications Consulting & SI
    1% BI & Big Data Consulting & SI
    1% Web Design

    Focus Areas

    10% JavaScript
    20% ASP.NET
    20% SQL +4
    15% C
    15% PHP
    10% C++
    10% Java

    Specter is recognized for its expertise in ebook writing and software development services. Clients commend the company for delivering high-quality work efficiently and on time, coupled with exceptional customer support. The professionalism and reliability demonstrated by Specter contribute to its strong reputation and high ratings, making it a recommended choice for similar projects.

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  • Click Meta X Logotype

    4.5 1 review
    Undisclosed
    Undisclosed
    10 - 49
    Surat, India

    Services provided

    10% Web Development
    80% E-Commerce Development
    10% Web Design

    Focus Areas

    10% JavaScript
    70% PHP
    20% HTML5

    Click Meta X specializes in Website Development, Web Design, and Web Programming, offering comprehensive maintenance services for Shopify-based websites. Their reviews highlight efficient task completion within designated timeframes, proactive communication, and quick responsiveness, indicating a reliable and professional service suited for web development needs.

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  • Interbound Media Managers Ltd. Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49
    Abuja, Nigeria

    Services provided

    10% Web Development
    15% Conversion Optimization
    15% Search Engine Optimization +7
    12% Social Media Marketing
    10% Digital Strategy
    10% Other Digital Marketing
    8% Branding
    8% Marketing Strategy
    7% Direct Marketing
    5% E-Commerce Development

    Focus Areas

    15% JavaScript
    35% PHP
    15% SQL +4
    10% ASP.NET
    10% C++
    10% XML
    5% Python

    Located in Abuja, Nigeria, Interbound Media Managers Ltd. Is a Conversion Optimization company. They offer Conversion Optimization and Search Engine Optimization and were founded in 2008.

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  • Alcaline Solutions Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Bombuwala, Sri Lanka

    Services provided

    10% Web Development
    60% Mobile App Development
    20% Custom Software Development +1
    10% UX/UI Design

    Focus Areas

    15% JavaScript
    20% Swift
    15% Kotlin +4
    15% Objective C
    15% Typescript
    10% PHP
    10% SQL

    Alcaline Solutions is an application development firm established in 2019. The team specializes in Mobile App Development and Custom Software Development.

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  • Enovate LLC Logotype

    Enovate LLC

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

    Services provided

    10% Web Development
    30% Web Design
    20% E-Commerce Development +7
    10% Low/No Code Development
    5% AI Development
    5% Custom Software Development
    5% Digital Strategy
    5% Ecommerce Marketing
    5% Email Marketing
    5% Video Production

    Focus Areas

    10% JavaScript
    55% PHP
    30% Swift +1
    5% HTML5

    Enovate LLC offers services in Website Development, Web Design, and Business Automation. The reviews highlight the company's professionalism, responsiveness, and attention to detail, resulting in high-quality, user-friendly websites and custom automation solutions. Enovate LLC is praised for its efficient project management and excellent communication skills, making it a recommended choice for businesses seeking top-notch Web Programming and Online Development services.

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  • K P Enterprises Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% IT Strategy Consulting
    20% Cloud Consulting & SI +2
    20% IT Managed Services
    20% UX/UI Design

    Focus Areas

    10% JavaScript
    20% HTML5
    20% PHP +3
    20% Ruby
    20% SQL
    10% Java

    Established in 2021, K P Enterprises is an IT strategy consulting company. The team offers IT strategy consulting and UX/UI Design.

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  • Zeplinix Technologies Logotype

    Zeplinix Technologies

    4.5 1 review
    Undisclosed
    Undisclosed
    10 - 49

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% Custom Software Development +2
    20% Graphic Design
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    25% Python
    20% PHP +2
    20% SQL
    15% Visual Basic

    Zeplinix Technologies pvt ltd provides comprehensive services in software development, IT solutions, and digital transformation. Our cutting-edge technology solutions are designed to help businesses

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  • JAM-Tech Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    10% AI Development
    10% Application Testing +6
    10% Blockchain
    10% Custom Software Development
    10% E-Commerce Development
    10% Mobile App Development
    10% Recruiting
    10% Staffing

    Focus Areas

    20% JavaScript
    20% Java
    20% Python +3
    20% Typescript
    15% HTML5
    5% SQL

    JAM-Tech is a website development firm. Located in Hallandale Beach, Florida and Kyiv, Ukraine, their team specializes in Web Development and Custom Software Development.

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  • My IT Agency Logotype

    My IT Agency

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

    Services provided

    10% Web Development
    10% Conversion Optimization
    10% Digital Strategy +7
    10% E-Commerce Development
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

    15% JavaScript
    20% PHP
    10% Java +12
    10% Python
    10% Visual Basic
    7% C++
    5% C
    5% C#
    5% Ruby
    5% SQL
    2% ASP.NET
    2% Ember.js
    2% Kotlin
    1% Redux
    1% Swift

    My IT Agency specializes in Website Development and Web Design, consistently delivering responsive and user-friendly websites. Reviews highlight their effective project management, timely communication, and development expertise. Clients appreciate their ability to meet deadlines and budgets while producing high-quality, functional websites.

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  • Analytics 4 Logotype

    Analytics 4

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

    Services provided

    10% Web Development
    35% Pay Per Click
    30% Conversion Optimization +3
    10% Digital Strategy
    10% Mobile App Development
    5% UX/UI Design

    Focus Areas

    30% JavaScript
    20% XML
    15% PHP +3
    15% Python
    10% Ruby
    10% SQL

    Analytics 4 specializes in providing consulting services that help businesses, particularly those entering the Polish market, communicate their offerings effectively. The reviews indicate that clients appreciate their precise, punctual, and professional project management, emphasizing good value for cost. Clients consistently note the company's impressive preparation and professionalism, with no areas for improvement highlighted.

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  • Codesolvix Logotype

    Codesolvix

    4.5 1 review
    $10,000+
    $25 - $49 / hr
    2 - 9

    Services provided

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

    Focus Areas

    20% JavaScript
    20% HTML5
    20% PHP +3
    20% jquery
    15% Typescript
    5% SQL

    Codesolvix offers design services, specializing in the creation of visually appealing and responsive email templates. The reviews indicate that the company delivers high-quality work with effective project management, resulting in increased engagement metrics for clients. Feedback highlights their attention to detail and responsiveness, although some suggest more frequent progress updates could enhance their service further.

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  • BlockchainFar Logotype

    BlockchainFar

    Not yet reviewed

    $5,000+
    Undisclosed
    2 - 9

    Services provided

    10% Web Development
    80% Blockchain
    10% Low/No Code Development

    Focus Areas

    30% JavaScript
    15% Redux
    15% SQL +5
    10% C#
    10% Other programming & scripting languages
    10% Typescript
    5% AJAX
    5% ASP.NET

    BlockchainFar is a Blockchain company. They are located in Dubai, United Arab Emirates. Their team provides Blockchain and Web Development.

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  • MM Design Agency Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    30% Web Design
    25% Email Marketing +2
    15% Search Engine Optimization
    5% Logo

    Focus Areas

    15% JavaScript
    50% HTML5
    20% Typescript +1
    15% AJAX

    In Fayetteville, Georgia, MM Design Agency is a web design agency. Founded in 2023, the team offers Web Design and Email Marketing.

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  • Casfus Technologies Logotype

    Casfus Technologies

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    25% Web Development
    25% Mobile App Development
    20% Custom Software Development +3
    10% Graphic Design
    10% Social Media Marketing
    10% UX/UI Design

    Focus Areas

    15% JavaScript
    25% PHP
    25% SQL +3
    15% AJAX
    10% HTML5
    10% jquery

    In Barasat, Kolkata, India, Casfus Technologies is a web development company. They offer Web Development and Mobile App Development.

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  • Tuyu Studio Logotype

    Tuyu Studio

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    10% Web Development
    50% UX/UI Design
    30% Web Design +1
    10% Custom Software Development

    Focus Areas

    30% JavaScript
    30% Python
    30% jquery +1
    10% Visual Basic

    Tuyu Studio is a small Kathmandu, Nepal-based UX company. The team specializes in UX/UI Design and Web Design.

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  • GraphicWare Logotype

    GraphicWare

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Graphic Design +2
    20% Logo
    20% Web Design

    Focus Areas

    20% JavaScript
    50% HTML5
    30% Other programming & scripting languages

    GraphicWare is a small web design agency founded in 2024. Their team focuses on Web Design and Graphic Design.

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  • Bitmaster Logotype

    Bitmaster

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +2
    20% IT Strategy Consulting
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% C# +2
    20% PHP
    20% Typescript

    Bitmaster, an IT strategy consulting company, is headquartered in Toronto, Canada. Founded in 2024, the team provides IT strategy consulting and Custom Software Development.

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  • Digiblankcanvas Logotype

    Digiblankcanvas

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

    Digiblankcanvas is a software development company. Established in 2020, the firm is based in New Delhi, India. Their team offers Custom Software Development and Web Development.

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  • MinimalX Logotype

    MinimalX

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Mobile App Development +2
    20% Search Engine Optimization
    20% UX/UI Design

    Focus Areas

    20% JavaScript
    30% Typescript
    10% HTML5 +4
    10% Other programming & scripting languages
    10% Python
    10% Redux
    10% SQL

    SEO company MinimalX was launched in 2025. The team provides Search Engine Optimization and UX/UI Design and is in Delhi, India.

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  • Idroid App Studio Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    75% Mobile App Development

    Focus Areas

    10% JavaScript
    25% Other programming & scripting languages
    25% Swift +2
    20% Kotlin
    20% PHP

    Idroid App Studio is a mobile app development company based in Ahmedabad, India. Established in 2020, the team specializes in Mobile App Development and Web Development.

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  • Enchilab Logotype

    Enchilab

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% Search Engine Optimization
    20% Graphic Design +2
    20% Pay Per Click
    20% Web Design

    Focus Areas

    25% JavaScript
    50% Ruby
    15% XML +1
    10% SQL

    Enchilab is a SEO agency. The small Barcelona, Spain-based team specializes in Search Engine Optimization and Graphic Design. The firm was launched in 2020.

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  • Elementor Expert Logotype

    5.0 2 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49
    Miami Beach, FL

    Services provided

    20% Web Development
    40% UX/UI Design
    30% Web Design +1
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    40% PHP
    35% SQL +1
    15% AJAX

    Elementor Expert provides services in Website Development, Web Design, and Web Programming, focusing on creating and optimizing online platforms with technical expertise and creative design. Reviews highlight their effectiveness in enhancing website performance, user engagement, and SEO, alongside their professional project management and proactive communication, making them a highly recommended partner for web development needs.

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  • Webventure Development Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% IT Staff Augmentation
    10% API Development +7
    10% Custom Software Development
    10% IT Strategy Consulting
    10% Low/No Code Development
    10% Microservices Architecture Services
    10% Mobile App Development
    5% AI Development
    5% Blockchain

    Focus Areas

    10% JavaScript
    30% PHP
    10% AJAX +5
    10% HTML5
    10% Kotlin
    10% Swift
    10% XML
    10% jquery

    IT staff augmentation company Webventure Development is located in București, Romania. Their services include IT staff augmentation and Custom Software Development.

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  • Visiomate Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    30% Custom Software Development
    25% IT Managed Services +4
    10% ERP Consulting and SI
    10% Mobile App Development
    5% CRM Consulting and SI
    5% E-Commerce Development

    Focus Areas

    15% JavaScript
    25% ASP.NET
    15% SQL +5
    10% C#
    10% Python
    10% Redux
    10% Typescript
    5% Swift

    Visiomate, a software development company, was established in 2017. The company offers Custom Software Development and IT managed services, and is small.

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  • LLC "Cosnedge Tech" Logotype

    LLC "Cosnedge Tech"

    Not yet reviewed

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

    Services provided

    15% Web Development
    50% Custom Software Development
    20% Other Application Development +1
    15% API Development

    Focus Areas

    15% JavaScript
    50% C#
    25% ASP.NET +1
    10% HTML5

    LLC "Cosnedge Tech" is a custom software development firm established in 2022. The team provides Custom Software Development and Other Application Development and is in Dover, Delaware.

    Read more
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  • Several.pro Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    2 - 9
    L'Hospitalet de Llobregat, Spain

    Services provided

    10% Web Development
    10% Branding
    10% Conversion Optimization +7
    10% Digital Strategy
    10% Graphic Design
    10% Packaging Design
    10% Product Design
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design

    Focus Areas

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

    Founded in 2014, Several.pro is a branding company. The team provides Branding and Digital Strategy and is headquartered in L'Hospitalet de Llobregat, Spain and Madrid, Spain.

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  • Pagespace Logotype

    Pagespace

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Mobile App Development
    10% AR/VR Development +6
    10% E-Commerce Development
    10% Low/No Code Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    11% JavaScript
    12% Kotlin
    11% AJAX +6
    11% Java
    11% Objective C
    11% PHP
    11% SQL
    11% Swift
    11% Typescript

    Pagespace, a web design agency, provide Web Design and Mobile App Development. They were established in 2022.

    Read more
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  • Babbage & Turing Logotype

    Babbage & Turing

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% AR/VR Development
    20% Mobile App Development +5
    10% AI Development
    10% Custom Software Development
    10% Low/No Code Development
    5% AI Consulting
    5% Generative AI

    Focus Areas

    14% JavaScript
    14% Other programming & scripting languages
    14% PHP +5
    14% Redux
    14% Typescript
    14% UnrealScript
    9% Kotlin
    7% Ember.js

    In Palo Alto, California, Babbage & Turing is a custom software development firm. The team provides Custom Software Development and Web Development.

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  • Bytes & Bayes Logotype

    Not yet reviewed

    $10,000+
    $200 - $300 / hr
    2 - 9
    Evesham, NJ

    Services provided

    20% Web Development
    35% AI Consulting
    25% Generative AI +1
    20% Custom Software Development

    Focus Areas

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

    Established in 2024, Bytes & Bayes is a small AI Consulting company. Their services include AI Consulting and Generative AI.

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  • Conceptualize Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    10 - 49
    Dubai, United Arab Emirates

    Services provided

    10% Web Development
    15% Search Engine Optimization
    15% UX/UI Design +8
    10% Conversion Optimization
    10% E-Commerce Development
    10% Mobile App Development
    10% Web Design
    8% Content Marketing
    8% Digital Strategy
    2% Email Marketing
    2% Video Production

    Focus Areas

    15% JavaScript
    50% PHP
    15% Python +2
    15% Swift
    5% Other programming & scripting languages

    Launched in 2014, Conceptualize is an UX design agency. The team specializes in UX/UI Design and Search Engine Optimization.

    Read more
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  • RCM Digital Solutions Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Alberton, South Africa

    Services provided

    10% Web Development
    30% Search Engine Optimization
    20% Pay Per Click +4
    15% Social Media Marketing
    10% Low/No Code Development
    10% Web Design
    5% Mobile App Development

    Focus Areas

    11% JavaScript
    12% Kotlin
    11% C# +6
    11% Java
    11% Objective C
    11% PHP
    11% Python
    11% SQL
    11% Swift

    RCM Digital Solutions is an Alberton, South Africa-based SEO services firm. Founded in 2013, the team focuses on Search Engine Optimization and Pay Per Click.

    Read more
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  • Peacock Studios Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    2 - 9
    Odessa, FL

    Services provided

    12% Web Development
    15% Application Management & Support
    15% UX/UI Design +9
    11% Custom Software Development
    10% Product Design
    6% Content Marketing
    6% Digital Strategy
    5% Advertising
    5% Branding
    5% Business Consulting
    5% Search Engine Optimization
    5% Social Media Marketing

    Focus Areas

    15% JavaScript
    60% ColdFusion
    15% SQL +1
    10% AJAX

    Launched in 2007, Peacock Studios, a small UX agency, is located in Odessa, Florida. Their services include UX/UI Design and Application Management & Support.

    Read more
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  • Infitech Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    2 - 9
    Prague, Czech Republic

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Enterprise App Modernization +3
    20% Mobile App Development
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    20% JavaScript
    30% PHP
    20% Go +2
    20% XML
    10% Java

    Infitech is a custom software development company. In Prague, Czech Republic, the firm was founded in 2022. Their services include Custom Software Development and Web Development.

    Read more
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We evaluate service providers using a structured methodology that combines:

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Ability to deliver
Focus
Clutch Leaders Matrix

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

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

List of the Top 15 JavaScript Development Companies

  1. Brainhub Logotype

    Brainhub

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

    Ability to deliver

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

    Service focus

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

    xfive

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

    Ability to deliver

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

    Service focus

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

    ImageX

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

    Ability to deliver

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

    Service focus

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

    The Software House

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

    Ability to deliver

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

    Service focus

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

    ATEAM SOFT SOLUTIONS

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

    Ability to deliver

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

    Service focus

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

    Airdev

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

    Ability to deliver

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

    Service focus

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

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    Toptal

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

    Ability to deliver

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

    Service focus

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

    Softonix

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

    Ability to deliver

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

    Service focus

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

    INOXOFT

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

    Ability to deliver

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

    Service focus

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

    Lizard Global

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

    Ability to deliver

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

    Service focus

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

    PopArt Studio

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

    Ability to deliver

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

    Service focus

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

    GeekyAnts

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

    Ability to deliver

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

    Service focus

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

    SpdLoad

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

    Ability to deliver

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

    Service focus

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

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

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

    HTMLPanda

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

    Ability to deliver

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

    Service focus

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

    Sigma Software Group

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

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

    Brainium Information Technologies

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

    Ability to deliver

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

    Service focus

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

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

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

    Experion Technologies

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

    Ability to deliver

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

    Service focus

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

    Human Made

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

    Ability to deliver

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

    Service focus

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

    Probey Services

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

    Ability to deliver

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

    Service focus

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

    Blazity

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

    Ability to deliver

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

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

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

    Vincit

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

    Ability to deliver

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

    Service focus

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

    PowerGate Software

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

    Ability to deliver

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

    Service focus

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

    Arcanys

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

    Ability to deliver

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

    Service focus

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

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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