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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: April 1, 2026
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15 Leaders 15 Contenders

21,834 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Featured

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    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

    4.9 89 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

    40% Web Development
    40% Custom Software Development
    20% IT Staff Augmentation

    Focus Areas

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

    Digis, a Fiverr company (NYSE: FVRR), specializes in Web Development, providing comprehensive services such as Front-End Development, Back-End Development, and Custom Website Development. Their reviews indicate a 100% satisfaction rate, highlighting their strong project management, technical expertise, and clear communication. Approximately 70% of reviewers emphasize their seamless integration into teams and high-quality deliverables.

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    Reviews mention Meets deadlines

    Overall client sentiment regarding DIGIS's adherence to deadlines is predominantly positive. Clients consistently highlight the company's reliability in meeting deadlines, with one stating, "They adhere to deadlines and do what they say they’re going to do." Another client noted, "There were no delays in terms of software or document deliverables." Clients appreciate the timely delivery of projects and express satisfaction with the efficiency of the development process, indicating a strong commitment to project timelines.
    • Web Development Support for Digital Marketing Agency
      5.0 Mar 16, 2026

      Digis' project management is solid. Their communication is clear, and they meet deadlines more often than not. When timelines shift, they flag it early. We communicate via email and messaging apps.

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    6 of 6 JavaScript reviews are 5 stars
    1 new review for JavaScript in past 6 months
    $10,000 – $49,000 avg. project cost

    JavaScript Experience

    Digis has received overwhelmingly positive feedback for their JavaScript services, with 90% of clients noting effective communication and timely delivery. Clients have praised the expertise of their developers, particularly in frontend and full-stack development, contributing to improved project turnaround times by 40%-50%. Notable strengths include their ability to adapt to client needs, provide high-quality code, and offer innovative solutions without requiring micromanagement. Overall, there are no significant areas for improvement mentioned, indicating strong client satisfaction.

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    Industry Experience

    Digis has received positive feedback across diverse industries, including Health Tech, Media, E-commerce, and Manufacturing. Clients highlight their strong expertise in backend and frontend development, particularly in languages like React and JavaScript. The overall sentiment is highly favorable, with many praising their responsiveness, project management, and ability to meet deadlines. Companies in sectors such as IT and Telecommunications have noted significant improvements in project turnaround times and application performance, indicating that Digis is a reliable partner for tech-driven projects.

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    Select Industry to see insights

    Human Resources Software Consulting Information technology Telecommunications Education Other industries Financial services eCommerce Retail Other Industry Automotive IT Services Energy & natural resources Gaming Transportation Business services Real estate Legal Arts, entertainment & music Wellness & Fitness Manufacturing Media Advertising & marketing
    $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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  • Jismon Thomas Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    Freelancer
    Vancouver, Canada

    Services provided

    60% Web Development
    40% Web Design

    Focus Areas

    50% JavaScript
    50% HTML5

    Jismon Thomas is a website development firm. Their team is based in Vancouver, Canada and specializes in Web Development and Web Design.

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  • Wiregate Logotype

    Not yet reviewed

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

    Services provided

    50% Web Development
    40% DevOps Managed Services
    10% UX/UI Design

    Focus Areas

    25% JavaScript
    15% PHP
    10% HTML5 +8
    10% Python
    10% Swift
    5% AJAX
    5% Redux
    5% SQL
    5% Typescript
    5% XML
    5% jquery

    Wiregate is a website development company based in Bar, Montenegro. Established in 2021, the team provides Web Development and DevOps Managed Services.

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  • Digital Business Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    18% UX/UI Design
    15% Digital Strategy +7
    15% Web Design
    10% Mobile App Development
    8% Mobile & App Marketing
    7% E-Commerce Development
    7% Email Marketing
    3% Social Media Marketing
    2% Graphic Design

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% Java +3
    20% PHP
    15% ASP
    5% Objective C

    Digital Business is an UX agency launched in 2011. Their team specializes in UX/UI Design and Digital Strategy.

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  • Global Partner Soft Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    40% JavaScript
    60% PHP

    Global Partner Soft is an UX agency. Headquartered in Khmelnytskyi, Ukraine, the firm offers UX/UI Design and E-Commerce Development.

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  • Website Vikreta Logotype

    Website Vikreta

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% E-Commerce Development
    15% Mobile App Development +5
    15% UX/UI Design
    13% Search Engine Optimization
    12% Application Testing
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    25% JavaScript
    30% HTML5
    20% AJAX +3
    15% PHP
    5% Python
    5% SQL

    Website Vikreta, a small web design company, is located in Pimpri-Chinchwad, India. Their services include Web Design and UX/UI Design.

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  • Devcenter Logotype

    Devcenter

    1.0 1 review
    $1,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    20% Web Development
    40% Mobile App Development
    20% Custom Software Development +2
    10% UX/UI Design
    10% Web Design

    Focus Areas

    25% JavaScript
    25% PHP
    25% Python +3
    10% Java
    10% Ruby
    5% Swift

    Devcenter is a software development company specializing in web application development with technologies like PHP and React.js. However, 100% of the feedback reflects dissatisfaction with their performance, citing slow responsiveness, poor documentation, and a product with significant issues. The company struggled to meet expectations, resulting in the client opting to work with a different vendor.

    See all 1 projects

    Industry Experience

    Devcenter has experience primarily in the real estate industry, where they faced challenges in delivering a responsive web application. Feedback indicates a lack of responsiveness, slow project progress, and poor-quality output, leading to dissatisfaction. The overall sentiment suggests that potential clients in the real estate sector may find limited success with Devcenter due to reported weaknesses in communication and development capabilities.

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    Select Industry to see insights

    Real estate

    Average Project Cost Breakdown

    $50,000 to $199,999 (1)

    What Clients Have Said

    Clients have expressed concerns regarding Devcenter's overall cost and value for money. One client noted their affordability but ultimately found the $1.5 million investment unsatisfactory, citing poor responsiveness and slow progress. They reported that the app developed was slow, buggy, and lacked proper documentation, leading to a decision to part ways. Overall, sentiment indicates that while initial pricing may be attractive, the quality of work does not justify the cost.
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  • Igniweb Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Armenia, Colombia

    Services provided

    30% Web Development
    20% Custom Software Development
    20% Digital Strategy +2
    15% Advertising
    15% UX/UI Design

    Focus Areas

    15% JavaScript
    50% PHP
    15% AJAX +3
    10% SQL
    5% Other programming & scripting languages
    5% XML

    Web development company Igniweb was launched in 2012. Located in Armenia, Colombia, the team provides Web Development and Digital Strategy.

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  • Dev TechnoLabs Logotype

    Dev TechnoLabs

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

    Services provided

    30% Web Development
    20% Search Engine Optimization
    15% Mobile App Development +5
    10% Custom Software Development
    10% Low/No Code Development
    5% E-Commerce Development
    5% IoT Development
    5% Social Media Marketing

    Focus Areas

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

    Dev TechnoLabs specializes in Website Development, Web Design, and Web Programming. Their clientele appreciates their professional approach, timely deliveries, and effective communication. Reviews highlight their expertise in developing online platforms, with clients specifically recommending their services for web development projects due to their reliability and thorough project management.

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  • Nexenvista Logotype

    Nexenvista

    Not yet reviewed

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

    Services provided

    50% Web Development
    30% Web Design
    10% E-Commerce Development +2
    5% Search Engine Optimization
    5% UX/UI Design

    Focus Areas

    40% JavaScript
    30% PHP
    15% HTML5 +1
    15% jquery

    Nexenvista is a website development firm. They were launched in 2024 and focus on Web Development and Web Design.

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  • Webo Creators Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% E-Commerce Development
    15% Search Engine Optimization +9
    10% Branding
    10% Social Media Marketing
    10% Web Design
    5% API Development
    5% Advertising
    5% CRM Consulting and SI
    5% Graphic Design
    5% Mobile App Development
    5% Video Production

    Focus Areas

    10% JavaScript
    10% HTML5
    5% AJAX +15
    5% ASP.NET
    5% C
    5% C#
    5% Ember.js
    5% Kotlin
    5% PHP
    5% Python
    5% Redux
    5% Rust
    5% SQL
    5% Typescript
    5% Visual Basic
    5% XML
    5% backbone.js
    5% jquery

    Webo Creators is a SEO agency. The team focuses on Search Engine Optimization and E-Commerce Development, and the firm is headquartered in New York, New York.

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  • Alchemy Technologies Ltd Logotype

    4.5 1 review
    $10,000+
    $25 - $49 / hr
    50 - 249
    Vancouver, Canada

    Services provided

    15% Web Development
    25% Custom Software Development
    20% Mobile App Development +7
    10% UX/UI Design
    5% AI Development
    5% API Development
    5% Blockchain
    5% E-Commerce Development
    5% Enterprise App Modernization
    5% Microservices Architecture Services

    Focus Areas

    20% JavaScript
    10% Kotlin
    5% AJAX +13
    5% ASP
    5% ASP.NET
    5% C#
    5% Go
    5% HTML5
    5% Objective C
    5% PHP
    5% Python
    5% Redux
    5% SQL
    5% Swift
    5% Typescript
    5% jquery

    We're a design-first software consulting, development, and deployment agency with headquarters in Vancouver and a offices in Ahmedabad and Bengaluru. Our mission is simple yet powerful: to build

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  • Gradient9 Studios Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    2 - 9
    Indianola, IA

    Services provided

    10% Web Development
    10% Advertising
    10% Branding +7
    10% E-Commerce Development
    10% Graphic Design
    10% Packaging Design
    10% Print Design
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    65% PHP
    5% AJAX +4
    5% HTML5
    5% SQL
    5% XML
    5% jquery

    In Indianola, Iowa, Gradient9 Studios is a small Advertising company. Their services include Advertising and Branding.

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  • SvartDev Logotype

    Not yet reviewed

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

    Services provided

    40% Web Development
    40% Mobile App Development
    20% Custom Software Development

    Focus Areas

    35% JavaScript
    45% Java
    10% SQL +2
    5% Redux
    5% XML

    SvartDev is a mobile app development firm. Located in Tallinn, Estonia, the company offers Mobile App Development and Web Development.

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  • ITCode Infotech Logotype

    4.5 1 review
    Undisclosed
    $25 - $49 / hr
    50 - 249
    Surat, India

    Services provided

    20% Web Development
    25% UX/UI Design
    20% IT Staff Augmentation +2
    20% Mobile App Development
    15% Custom Software Development

    Focus Areas

    40% JavaScript
    20% HTML5
    20% Typescript +4
    5% AJAX
    5% Other programming & scripting languages
    5% Redux
    5% XML

    ITCode Infotech offers ERP system development and courier scheduling and management solutions. Reviews highlight their excellent project management, timely delivery, and commitment to transparency. Clients appreciate the team's ability to meet expectations, their professionalism in communication, and the overall value for cost, making ITCode Infotech a reliable option for IT solutions.

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  • Asterdio Inc. Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    30% JavaScript
    20% PHP
    20% Typescript +3
    10% Kotlin
    10% Python
    10% Swift

    Asterdio Inc. Is a midsize user experience design agency. They specialize in UX/UI Design and Web Development and were launched in 2015.

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  • Zeek Studio Logotype

    Zeek Studio

    Not yet reviewed

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

    Services provided

    40% Web Development
    25% UX/UI Design
    10% Branding +3
    10% E-Commerce Development
    10% Low/No Code Development
    5% Graphic Design

    Focus Areas

    30% JavaScript
    25% AJAX
    20% PHP +2
    15% HTML5
    10% SQL

    Zeek Studio is a Vaughan, Canada-based website development company. They offer Web Development and UX/UI Design.

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  • Henixweb Logotype

    Henixweb

    Not yet reviewed

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

    Services provided

    30% Web Development
    35% Web Design
    15% Branding +2
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    15% JavaScript
    30% PHP
    15% AJAX +3
    15% Swift
    15% XML
    10% Java

    Henixweb is a web design company. The company is based in Ahmedabad, India. Their services include Web Design and Web Development.

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  • HTML Studio Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    20% JavaScript
    20% Objective C
    20% PHP +3
    20% Swift
    10% Java
    10% SQL

    HTML Studio is an UX agency. The firm is located in Paris, France. Their services include UX/UI Design and Mobile App Development.

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  • SySale Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% Custom Software Development
    15% E-Commerce Development +4
    15% IT Strategy Consulting
    15% UX/UI Design
    15% Web Design
    10% Graphic Design

    Focus Areas

    30% JavaScript
    45% PHP
    10% Python +3
    5% AJAX
    5% SQL
    5% XML

    Software development firm SySale is based in Kyiv, Ukraine. They specialize in Custom Software Development and UX/UI Design.

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  • ETCTECH GLOBAL SDN BHD Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Kuala Lumpur, Malaysia

    Services provided

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

    Focus Areas

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

    ETCTECH GLOBAL SDN BHD is a custom software development firm. The Kuala Lumpur, Malaysia-based team offers Custom Software Development and E-Commerce Development.

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  • ARFASOFTECH Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    30% Mobile App Development
    10% E-Commerce Development +3
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design

    Focus Areas

    15% JavaScript
    20% Java
    20% PHP +5
    20% SQL
    10% AJAX
    5% Kotlin
    5% Other programming & scripting languages
    5% XML

    Web development company ARFASOFTECH is headquartered in Jandiala Baghwala, Pakistan. They provide Web Development and Mobile App Development.

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  • Dream Warrior Group Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    10 - 49
    Los Angeles, CA

    Services provided

    10% Web Development
    13% Low/No Code Development
    10% Conversion Optimization +11
    10% Custom Software Development
    10% E-Commerce Development
    10% Mobile App Development
    10% Search Engine Optimization
    5% Application Management & Support
    5% Business Consulting
    5% Ecommerce Marketing
    5% Graphic Design
    5% UX/UI Design
    1% BI & Big Data Consulting & SI
    1% Web Design

    Focus Areas

    15% JavaScript
    25% PHP
    25% Swift +3
    15% Kotlin
    15% SQL
    5% Python

    Dream Warrior Group is a custom software development company. Their team is based in Los Angeles, California and provides Custom Software Development and Conversion Optimization.

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  • Digital Story Logotype

    Not yet reviewed

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

    Services provided

    40% Web Development
    40% UX/UI Design
    20% E-Commerce Development

    Focus Areas

    50% JavaScript
    50% PHP

    Founded in 2011, Digital Story is an user experience design company. The agency specializes in UX/UI Design and Web Development, and is small.

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  • The Outfit Logotype

    Not yet reviewed

    $25,000+
    $150 - $199 / hr
    2 - 9
    Beverly, MA

    Services provided

    60% Web Development
    20% UX/UI Design
    20% Web Design

    Focus Areas

    40% JavaScript
    40% PHP
    20% AJAX

    Web development firm The Outfit was founded in 2012. The team offers Web Development and UX/UI Design.

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  • Steel Advertising Logotype

    Not yet reviewed

    $75,000+
    $150 - $199 / hr
    10 - 49
    Austin, TX

    Services provided

    10% Web Development
    10% Advertising
    10% Content Marketing +7
    10% Email Marketing
    10% Logo
    10% Media Planning & Buying
    10% Public Relations
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    33% JavaScript
    34% PHP
    33% XML

    Steel Advertising is an Advertising company. The Austin, Texas-based agency was launched in 2000. Their team specializes in Advertising and Content Marketing.

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  • SpringHire Logotype

    Not yet reviewed

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

    Services provided

    33% Web Development
    34% Custom Software Development
    33% Mobile App Development

    Focus Areas

    10% JavaScript
    10% Kotlin
    10% Python +11
    10% Ruby
    10% SQL
    10% Swift
    5% AJAX
    5% HTML5
    5% Objective C
    5% Other programming & scripting languages
    5% PHP
    5% Rust
    5% Visual Basic
    5% jquery

    SpringHire is a software development firm. Based in Bengaluru, India, the firm provides Custom Software Development and Web Development.

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  • PureAccessible Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    New York, NY

    Services provided

    20% Web Development
    60% Business Consulting
    20% Corporate Training & Coaching

    Focus Areas

    80% JavaScript
    20% Other programming & scripting languages

    PureAccessible is a midsize Business Consulting company established in 2013. Their services include Business Consulting and Web Development.

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  • OM SOLUTIONZ PVT LTD Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Lahore, Pakistan

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +4
    10% AI Development
    10% Branding
    10% Mobile App Development
    10% UX/UI Design

    Focus Areas

    50% JavaScript
    50% Python

    Located in Lahore, Pakistan and London, England, OM SOLUTIONZ PVT LTD is a software development firm. They provide Custom Software Development and Web Development.

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  • Hirabit Logotype

    Hirabit

    Not yet reviewed

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

    Services provided

    20% Web Development
    10% AR/VR Development
    10% Cybersecurity +6
    10% IT Managed Services
    10% Logo
    10% Mobile App Development
    10% Product Design
    10% UX/UI Design
    10% Web Design

    Focus Areas

    50% JavaScript
    50% C#

    Hirabit is a website development company. They focus on Web Development and Web Design and were established in 2015.

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  • CADILA GLOBAL Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Application Testing
    20% BI & Big Data Consulting & SI +2
    20% Graphic Design
    20% Video Production

    Focus Areas

    50% JavaScript
    50% Python

    CADILA GLOBAL is a graphic design agency. They are based in Sugar Land, Texas and have midsize team of experts. Their services include Graphic Design and Video Production.

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  • Sapere Marketing Logotype

    Sapere Marketing

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    10 - 49

    Services provided

    30% Web Development
    50% Web Design
    10% Search Engine Optimization +2
    5% Branding
    5% UX/UI Design

    Focus Areas

    35% JavaScript
    40% PHP
    25% HTML5

    Sapere Marketing is a web design company. Founded in 2016, the firm is based in Lewes, Delaware. Their services include Web Design and Web Development.

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  • Tamatos Logotype

    5.0 1 review
    $5,000+
    $50 - $99 / hr
    10 - 49
    Karachi, Pakistan

    Services provided

    25% Web Development
    25% Search Engine Optimization
    20% E-Commerce Development +3
    10% Email Marketing
    10% Pay Per Click
    10% Public Relations

    Focus Areas

    25% JavaScript
    30% PHP
    25% Python +1
    20% HTML5

    Tamatos provides comprehensive Website Development and Web Design services, specializing in creating and updating WordPress sites. Their reviews highlight a strong focus on timely delivery, effective communication, and professional project management, with clients noting significant improvements in website traffic and leads. Clients appreciate their commitment to quality and the ease of updating content post-launch.

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  • Smark One Technology Pvt. Ltd. Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    15% Branding
    15% Business Consulting +4
    15% Search Engine Optimization
    10% Graphic Design
    10% Social Media Marketing
    5% Mobile App Development

    Focus Areas

    30% JavaScript
    40% PHP
    20% AJAX +1
    10% XML

    Smark One Technology Pvt. Ltd. Is a Lalitpur, Nepal-based web development firm. They focus on Web Development and Branding and were established in 2017.

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  • 530medialab Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    10 - 49
    Costa Mesa, CA

    Services provided

    15% Web Development
    25% Digital Strategy
    10% AR/VR Development +8
    10% Branding
    10% Pay Per Click
    10% Web Design
    5% E-Commerce Development
    5% ERP Consulting and SI
    5% Media Planning & Buying
    3% Email Marketing
    2% Search Engine Optimization

    Focus Areas

    26% JavaScript
    26% PHP
    15% SQL +22
    12% XML
    1% AJAX
    1% ASP
    1% ASP.NET
    1% Apex
    1% C
    1% C#
    1% C++
    1% ColdFusion
    1% Delphi
    1% Ember.js
    1% Go
    1% Java
    1% Kotlin
    1% Objective C
    1% Other programming & scripting languages
    1% Perl
    1% Python
    1% Redux
    1% Ruby
    1% Swift
    1% Visual Basic

    530medialab is a Digital Strategy company. Launched in 1999, the team specializes in Digital Strategy and Web Development.

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  • 2Digit Innovations Pvt. Ltd. Logotype

    5.0 1 review
    $5,000+
    $25 - $49 / hr
    2 - 9
    Noida, India

    Services provided

    30% Web Development
    55% Mobile App Development
    15% Social Media Marketing

    Focus Areas

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

    2Digit Innovations Pvt. Ltd. specializes in Website Development and Online Development services, demonstrated through their proficient execution of mobile app projects. Clients consistently commend the company for its cost-effective solutions, thorough project management, and timely delivery, although they suggest offering more options in module execution.

    See all 1 projects
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  • PurplePlane-IT Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    40% Mobile App Development
    14% Low/No Code Development +6
    10% E-Commerce Development
    10% IoT Development
    5% Branding
    5% UX/UI Design
    5% Wearable App Development
    1% Web Design

    Focus Areas

    15% JavaScript
    30% Python
    10% C# +5
    10% Go
    10% Kotlin
    10% Swift
    10% Typescript
    5% PHP

    Launched in 2017, PurplePlane-IT is a mobile app development company. The team offers Mobile App Development and Web Development.

    Read more
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  • Nesa Inc Ltd Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    25% Business Consulting
    15% IT Strategy Consulting +4
    10% Custom Software Development
    10% Low/No Code Development
    10% Search Engine Optimization
    10% Web Design

    Focus Areas

    60% JavaScript
    20% PHP
    20% SQL

    Established in 2007, Nesa Inc Ltd is a Business Consulting company. The team offers Business Consulting and Web Design.

    Read more
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  • designah - designs which makes you ah! Logotype

    Not yet reviewed

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

    Services provided

    50% Web Development
    40% Web Design
    10% Search Engine Optimization

    Focus Areas

    40% JavaScript
    50% Typescript
    10% Rust

    Founded in 2024, designah - designs which makes you ah! is a website development company. The team focuses on Web Development and Web Design and is located in Dehradun, India.

    Read more
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  • Aston ITM Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    10 - 49
    Bratislava, Slovakia

    Services provided

    20% Web Development
    30% Custom Software Development
    15% AI Consulting +3
    15% AI Development
    10% IT Strategy Consulting
    10% Mobile App Development

    Focus Areas

    40% JavaScript
    35% Java
    20% Typescript +1
    5% Kotlin

    Established in 1996, Aston ITM, a small software development firm, is in Bratislava, Slovakia and Bratislava, Slovakia. Their services include Custom Software Development and Web Development.

    Read more
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  • Pineapplelab Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile App Development
    15% API Development +6
    15% Custom Software Development
    10% Web Design
    5% AI Development
    5% Branding
    5% Microservices Architecture Services
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    45% Typescript
    20% Other programming & scripting languages +3
    15% C#
    5% HTML5
    5% SQL

    Pineapplelab is a web development firm. The Montevideo, Uruguay-based agency was founded in 2012. Their services include Web Development and Mobile App Development.

    Read more
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  • Avezor Soft Logotype

    Avezor Soft

    1.0 1 review
    $5,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    40% Web Development
    10% CRM Consulting and SI
    10% Custom Software Development +4
    10% Graphic Design
    10% Logo
    10% UX/UI Design
    10% Web Design

    Focus Areas

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

    Avezor Soft is a web development company specializing in frontend design and modern design techniques. Reviews indicate initial satisfaction with their frontend work, but concerns arose over project management and adherence to project requirements. Approximately 50% of the project went unfulfilled, highlighting issues with communication and delivery.

    See all 1 projects

    Industry Experience

    Avezor Soft has experience primarily in the IT Services industry, with a focus on web-based platform development. Feedback indicates strengths in frontend design and modern design techniques; however, concerns arise regarding project management, communication, and adherence to client requirements. The overall sentiment is mixed, highlighting initial satisfaction that deteriorated due to misalignment and responsiveness issues. This suggests that potential clients in IT Services seeking design expertise may find value, but should consider their project management capabilities.

    Read All Reviews

    Select Industry to see insights

    IT Services

    Average Project Cost Breakdown

    Less than $10,000 (1)

    What Clients Have Said

    Clients generally express dissatisfaction with Avezor Soft's value for money, citing issues with project scope and deliverables. One client invested approximately $2,000 but reported a lack of responsiveness and failure to meet deadlines, leading to financial loss. Although initial frontend designs were praised, the overall sentiment reflects concerns about the company's ability to deliver on promises and effectively manage projects, ultimately questioning their cost-effectiveness.
    Read All Reviews
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  • Primal Skill Logotype

    Not yet reviewed

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

    Services provided

    40% Web Development
    15% Custom Software Development
    10% E-Commerce Development +5
    10% IT Strategy Consulting
    10% Mobile App Development
    5% Other Application Development
    5% UX/UI Design
    5% Web Design

    Focus Areas

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

    Primal Skill is a web development company. The agency is based in Târgu Mureș, Romania. Their services include Web Development and Custom Software Development.

    Read more
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  • 33wSoftware Logotype

    Not yet reviewed

    $100,000+
    $50 - $99 / hr
    10 - 49
    Poznań, Poland

    Services provided

    30% Web Development
    30% Mobile App Development
    15% Web Design +4
    10% UX/UI Design
    5% Branding
    5% IoT Development
    5% Product Design

    Focus Areas

    30% JavaScript
    45% Typescript
    10% PHP +2
    10% SQL
    5% Other programming & scripting languages

    33wSoftware is a web development firm. Their small team is in Poznań, Poland. Their services include Web Development and Mobile App Development.

    Read more
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  • Creative nuts Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    35% Performance Marketing
    25% Social Media Marketing +1
    20% Graphic Design

    Focus Areas

    20% JavaScript
    40% HTML5
    15% PHP +2
    15% jquery
    10% Python

    Creative nuts is a Performance Marketing company in Bengaluru, India. Their services include Performance Marketing and Social Media Marketing.

    Read more
    $500 Best for small business websites $1,100 Best for businesses building professional website $1,650 Best for conversion-focused business websites

    Website Design & Development Package

    We create responsive, user-friendly websites designed to enhance brand presence and support business growth. Our development process focuses on clean design, fast performance, and SEO-ready structure to ensure an optimized digital experience across all devices.
    View Packages
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  • YMB Logotype

    YMB

    Not yet reviewed

    $1,000+
    < $25 / hr
    Freelancer

    Services provided

    50% Web Development
    50% Web Design

    Focus Areas

    15% JavaScript
    50% PHP
    15% SQL +2
    10% AJAX
    10% jquery

    YMB is a web design agency and web development company. Their team is located in Ruva Part, India. The firm focuses on Web Design and Web Development.

    Read more
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  • Fyin.com Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    10 - 49
    Denver, CO

    Services provided

    50% Web Development
    25% Custom Software Development
    25% Web Design

    Focus Areas

    20% JavaScript
    30% ASP.NET
    30% C# +2
    10% HTML5
    10% SQL

    Fyin.com, a website development company, was founded in 1999. The firm specializes in Web Development and Web Design.

    Read more
    View Profile
  • JJR Software Solutions Logotype

    JJR Software Solutions

    Not yet reviewed

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

    Services provided

    25% Web Development
    10% Custom Software Development
    10% E-Commerce Development +10
    10% Mobile App Development
    5% API Development
    5% Application Management & Support
    5% Application Testing
    5% Blockchain
    5% DevOps Managed Services
    5% ERP Consulting and SI
    5% Enterprise App Modernization
    5% Low/No Code Development
    5% Microservices Architecture Services

    Focus Areas

    20% JavaScript
    25% Python
    25% Redux +2
    25% SQL
    5% Kotlin

    Launched in 2017, JJR Software Solutions is a web development company. The team provides Web Development and Custom Software Development and is in Ahmedabad, India.

    Read more
    View Profile
  • SwiftRoot Logotype

    Not yet reviewed

    $10,000+
    Undisclosed
    2 - 9
    Calgary, Canada

    Services provided

    45% Web Development
    50% Custom Software Development
    5% Digital Strategy

    Focus Areas

    20% JavaScript
    80% PHP

    SwiftRoot is a software development company. They provide Custom Software Development and Web Development and were founded in 2015. The agency is headquartered in Calgary, Canada.

    Read more
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  • Remote Partner Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    2 - 9
    Braga, Portugal

    Services provided

    15% Web Development
    15% Custom Software Development
    15% IT Staff Augmentation +10
    10% Mobile App Development
    5% AI Development
    5% BI & Big Data Consulting & SI
    5% Cloud Consulting & SI
    5% E-Commerce Development
    5% Enterprise App Modernization
    5% IT Strategy Consulting
    5% IoT Development
    5% UX/UI Design
    5% Web Design

    Focus Areas

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

    Remote Partner is an IT staff augmentation company launched in 2020. The small team specializes in IT staff augmentation and Custom Software Development.

    Read more
    View Profile
  • PNN Soft Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    50 - 249
    Kyiv, Ukraine

    Services provided

    20% Web Development
    50% Custom Software Development
    20% Mobile App Development +1
    10% IT Staff Augmentation

    Focus Areas

    10% JavaScript
    30% Java
    20% ASP.NET +4
    15% C#
    15% Objective C
    5% AJAX
    5% Other programming & scripting languages

    PNN Soft, a custom software development firm, specializes in Custom Software Development and Mobile App Development. The company is headquartered in Kyiv, Ukraine and London, England.

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

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

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Ability to deliver
Focus
Clutch Leaders Matrix

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

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

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

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

    Service focus

    45% Web Development
    75% JavaScript
    55% Other
    View Profile Visit Website
  4. ATEAM SOFT SOLUTIONS Logotype

    ATEAM SOFT SOLUTIONS

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

    Ability to deliver

    38.5/40.0
    19.2/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

    50% Web Development
    50% JavaScript
    50% Other
    View Profile Visit Website
  5. The Software House Logotype

    The Software House

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

    Ability to deliver

    39.8/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    40% Web Development
    60% JavaScript
    60% Other
    View Profile Visit Website
  6. 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
  7. Airdev Logotype

    Airdev

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

    Ability to deliver

    38.7/40.0
    19.4/20 Reviews
    9.6/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    40% Web Development
    50% JavaScript
    60% Other
    View Profile Visit Website
  8. WPWeb Infotech Logotype

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

    65% Web Development
    20% JavaScript
    35% Other
    View Profile Visit Website
  9. 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
  10. Softonix Logotype

    Softonix

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

    Ability to deliver

    36.5/40.0
    17.6/20 Reviews
    10/10 Clients & Experience
    8.9/10 Market Presence

    Service focus

    70% Web Development
    50% JavaScript
    30% Other
    View Profile Visit Website
  11. 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. Incora Logotype

    Incora

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

    Ability to deliver

    37.6/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    9/10 Market Presence

    Service focus

    40% Web Development
    50% JavaScript
    60% Other
    View Profile Visit Website
  15. 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
  16. 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
  17. Toptal Logotype

    Toptal

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

    Ability to deliver

    38.7/40.0
    18.8/20 Reviews
    9.9/10 Clients & Experience
    10/10 Market Presence

    Service focus

    15% Web Development
    25% JavaScript
    85% Other
    View Profile Visit Website
  18. 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
  20. Techuz InfoWeb Pvt. Ltd. Logotype

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

    36.3/40.0
    16.6/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  21. PowerGate Software Logotype

    PowerGate Software

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

    Ability to deliver

    38.7/40.0
    19.2/20 Reviews
    10/10 Clients & Experience
    9.5/10 Market Presence

    Service focus

    30% Web Development
    21% JavaScript
    70% Other
    View Profile Visit Website
  22. 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
  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. 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
  25. Human Made Logotype

    Human Made

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

    Ability to deliver

    37.8/40.0
    18/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    100% Web Development
    30% JavaScript
    View Profile Visit Website
  26. Blazity Logotype

    Blazity

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

    Ability to deliver

    37.3/40.0
    18.2/20 Reviews
    10/10 Clients & Experience
    9.2/10 Market Presence

    Service focus

    50% Web Development
    70% JavaScript
    50% Other
    View Profile Visit Website
  27. Sigma Software Group Logotype

    Sigma Software Group

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

    Ability to deliver

    38/40.0
    18.2/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

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

    Vangwe

    $10,000+
    $50 - $99 / hr
    10 - 49
    Montevideo, Uruguay

    Ability to deliver

    38.3/40.0
    19.4/20 Reviews
    10/10 Clients & Experience
    8.9/10 Market Presence

    Service focus

    40% Web Development
    50% JavaScript
    60% 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. Light IT Global Logotype

    Light IT Global

    $25,000+
    $25 - $49 / hr
    50 - 249
    Rickmansworth, England

    Ability to deliver

    38.9/40.0
    19.2/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    60% Web Development
    20% JavaScript
    40% 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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