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Top JavaScript Developers

JavaScript powers everything from interactive websites to complex enterprise applications. Partnering with an experienced JavaScript development agency ensures your product is fast, secure, and ready to scale. Clutch makes it easy to find trusted providers by publishing in-depth, verified client reviews and transparent performance data. Use our filters to sort agencies by budget, location, framework expertise, and more. Looking for regional specialists? Browse firms in the United States, United Kingdom, or Canada to compare portfolios and pricing in your market. Start exploring today and shortlist partners that align with your goals.
Ratings Updated: February 11, 2026
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15 Leaders 15 Contenders

21,649 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Featured

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    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

    4.9 88 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

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

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    Reviews mention Openness

    The feedback indicates a strong sentiment of openness from the company, with clients appreciating their proactive communication and willingness to address questions and suggestions. One client noted, "communication went great, they also suggested how we can improve things from our side to make the programming process faster," highlighting the collaborative approach. Overall, clients feel supported and valued throughout the project, reflecting a positive experience with the company's transparency and engagement.
    • Web App Dev for B2B Market Research Platform
      4.5 Apr 17, 2024

      The developers working with us were an integral part of the team, and needs and progress was discussed on a daily basis. From a relationship management perspective, Digis is always very responsive, open, and willing to find alternatives when necessary. How the relationship is managed. Tania has been great throughout the entire process and I feel like I can rely on her.

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    Industry Experience

    Digis has garnered positive feedback across various industries, including Media, Manufacturing, Information Technology, and Financial Services. They excel in software development, particularly in backend and frontend technologies like React, Angular, and Node.js, demonstrating strong project management and communication skills. Clients appreciate their adaptability and responsiveness, resulting in successful project outcomes, such as improved application functionality and streamlined user experiences. Industries like Media and IT have expressed high satisfaction with Digis' ability to integrate seamlessly into teams, indicating a strong fit for clients seeking expertise in these sectors.

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    Select Industry to see insights

    Human Resources Software Consulting Information technology Telecommunications Education Advertising & marketing 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

    View projects from:

    United States (28) Germany (7) Ukraine (7) England (4) France (4) Israel (3) South Africa (2) Canada (2) Italy (2) Sweden (2) Spain (2) Ireland (1) Netherlands (1) New Zealand (1) Poland (1) Romania (1) Russia (1) Lithuania (1) Latvia (1) Japan (1) Australia (1) Georgia (1) Scotland (1) Estonia (1)
    $50,000 Best for Small Companies $75,000 Best for Medium Companies $100,000 Best for Enterprises

    Custom Product Development

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

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

    Services provided

    10% Web Development
    14% Low/No Code Development
    10% E-Commerce Development +13
    10% Graphic Design
    10% Logo
    10% Product Design
    10% UX/UI Design
    10% Web Design
    8% Social Media Marketing
    2% Other Application Development
    1% Branding
    1% Custom Software Development
    1% Email Marketing
    1% Market Research
    1% Mobile App Development
    1% Video Production

    Focus Areas

    25% JavaScript
    30% PHP
    15% SQL +3
    10% AJAX
    10% HTML5
    10% Other programming & scripting languages

    ITify specializes in Website Development, Web Design, and Online Development, delivering high-quality web solutions tailored to client needs. Their reviews highlight exceptional technical expertise, creativity, and collaborative project management. Clients commend ITify for transforming visions into successful online platforms, while emphasizing their commitment to transparency, timely deliveries, and adaptability in meeting evolving requirements.

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    More responsive than most other service providers

    ITify is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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  • Penguin House Designs Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile App Development
    10% Pay Per Click +7
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design
    5% Business Consulting
    5% Email Marketing
    5% Logo
    5% Social Media Marketing

    Focus Areas

    60% JavaScript
    10% Java
    10% Other programming & scripting languages +2
    10% SQL
    10% Swift

    Penguin House Designs is a small mobile app development company based in Park City, Utah. The team specializes in Mobile App Development and Web Development.

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  • Avoco d.o.o (ltd) Logotype

    Not yet reviewed

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

    Services provided

    50% Web Development
    30% E-Commerce Development
    20% Web Design

    Focus Areas

    20% JavaScript
    60% PHP
    10% AJAX +1
    10% SQL

    Website development firm Avoco d.o.o (ltd) is based in Đurđevac, Croatia. They focus on Web Development and E-Commerce Development.

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  • Eurelis Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Paris, France

    Services provided

    15% Web Development
    20% Mobile App Development
    10% BI & Big Data Consulting & SI +9
    10% Cloud Consulting & SI
    10% DevOps Managed Services
    5% API Development
    5% Custom Software Development
    5% Cybersecurity
    5% Generative AI
    5% IoT Development
    5% UX/UI Design
    5% Web Design

    Focus Areas

    10% JavaScript
    10% Python
    5% AJAX +15
    5% ASP
    5% ASP.NET
    5% Apex
    5% C++
    5% HTML5
    5% Java
    5% Objective C
    5% Other programming & scripting languages
    5% PHP
    5% Ruby
    5% SQL
    5% Swift
    5% Visual Basic
    5% XML
    5% jquery

    Eurelis is a mobile app development firm. They are located in Paris, France. Their team specializes in Mobile App Development and Web Development.

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  • JRM Web Marketing Logotype

    Not yet reviewed

    $5,000+
    $150 - $199 / hr
    10 - 49
    Pleasant Hill, CA

    Services provided

    40% Web Development
    40% Web Design
    20% E-Commerce Development

    Focus Areas

    20% JavaScript
    40% PHP
    30% Other programming & scripting languages +1
    10% Ruby

    Founded in 2014, JRM Web Marketing is a web design company. The team offers Web Design and Web Development.

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  • CodePolicy Technologies Logotype

    Not yet reviewed

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

    Services provided

    40% Web Development
    40% IT Staff Augmentation
    10% Enterprise App Modernization +1
    10% IT Strategy Consulting

    Focus Areas

    20% JavaScript
    30% C#
    30% Java +1
    20% PHP

    CodePolicy Technologies, an IT staff augmentation company, is based in Pune, India. They provide IT staff augmentation and Web Development.

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  • OmTec Web Logotype

    Not yet reviewed

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

    Services provided

    40% Web Development
    20% Custom Software Development
    20% E-Commerce Development +1
    20% Mobile App Development

    Focus Areas

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

    OmTec Web is a web development company. They are located in Surat, India and Surat, India and have small team of experts. Their services include Web Development and Custom Software Development.

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  • SoftNEP Pvt. Ltd. Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    20% Mobile App Development
    10% Custom Software Development +6
    10% UX/UI Design
    10% Web Design
    5% Application Testing
    5% Digital Strategy
    5% E-Commerce Development
    5% Search Engine Optimization

    Focus Areas

    10% JavaScript
    50% PHP
    20% SQL +2
    15% AJAX
    5% Swift

    SoftNEP Pvt. Ltd. Is a website development company. The small Kathmandu, Nepal-based team provides Web Development and Mobile App Development. The company was founded in 2005.

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  • Harnods Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    Central Park, Indonesia

    Services provided

    20% Web Development
    60% Web Design
    15% Mobile App Development +1
    5% Graphic Design

    Focus Areas

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

    Harnods is a Central Park, Indonesia-based web design agency. Their services include Web Design and Web Development.

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  • Technocrats Horizons Compusoft Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Mobile App Development
    15% E-Commerce Development +7
    10% AR/VR Development
    10% Blockchain
    10% Custom Software Development
    10% Low/No Code Development
    5% Product Design
    5% Search Engine Optimization
    5% Social Media Marketing

    Focus Areas

    20% JavaScript
    20% SQL
    10% AJAX +5
    10% Java
    10% Kotlin
    10% PHP
    10% Python
    10% Redux

    Technocrats Horizons Compusoft Pvt Ltd, a custom software development company, focus on Custom Software Development and Mobile App Development. They were founded in 2011.

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  • Skilfinity Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Singapore, Singapore

    Services provided

    20% Web Development
    25% Pay Per Click
    25% Search Engine Optimization +2
    15% Content Marketing
    15% Social Media Marketing

    Focus Areas

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

    Skilfinity is a PPC company. The firm is based in Singapore, Singapore. Their team specializes in Pay Per Click and Search Engine Optimization.

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  • ProDeveloper Web Design St Pete SEO Logotype

    5.0 1 review
    $1,000+
    $50 - $99 / hr
    2 - 9
    Pinellas Park, FL

    Services provided

    10% Web Development
    15% Email Marketing
    10% Blockchain +14
    10% E-Commerce Development
    10% Search Engine Optimization
    10% Web Design
    9% Social Media Marketing
    5% Graphic Design
    5% Pay Per Click
    2% Advertising
    2% Branding
    2% Conversion Optimization
    2% Custom Software Development
    2% Digital Strategy
    2% Logo
    2% Market Research
    2% Print Design

    Focus Areas

    40% JavaScript
    50% PHP
    10% XML

    ProDeveloper Web Design St Pete SEO specializes in Web Development, including services like website clean-up, creating web pages for furnished rentals, and integrating booking pages. Reviews highlight their effective communication and timely delivery, with clients particularly appreciating their ability to meet project goals and deliver value within budget.

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  • AVEKO Logotype

    AVEKO

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    30% JavaScript
    20% HTML5
    20% Redux +2
    20% Typescript
    10% jquery

    SEO agency AVEKO was launched in 2020. Located in Porto-Vecchio, France and Paris, France, the team provides Search Engine Optimization and Web Design.

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  • TechnomaX Systems Logotype

    TechnomaX Systems

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% AI Consulting
    10% AI Development +7
    10% BI & Big Data Consulting & SI
    10% Custom Software Development
    10% ECM Consulting and SI
    10% Enterprise App Modernization
    10% IT Staff Augmentation
    10% Mobile App Development
    10% Robotics Process Automation

    Focus Areas

    20% JavaScript
    35% Typescript
    25% HTML5 +2
    10% Kotlin
    10% Swift

    Data analytics company TechnomaX Systems is headquartered in دبي, United Arab Emirates and Coimbatore, India. They offer BI & big data consulting & SI and ECM consulting and SI.

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  • Successive Technologies Norge AS Logotype

    Successive Technologies Norge AS

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    25% JavaScript
    25% ASP.NET
    25% C# +1
    25% PHP

    Successive Technologies Norge AS, an UX design agency, is in Norway. Founded in 2017, the team offers UX/UI Design and E-Commerce Development.

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  • Techticks Digital Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    40% Mobile App Development
    15% Custom Software Development +3
    10% Application Management & Support
    10% Low/No Code Development
    5% E-Commerce Development

    Focus Areas

    10% JavaScript
    20% Python
    15% Typescript +6
    10% AJAX
    10% PHP
    10% Redux
    10% SQL
    10% Swift
    5% Other programming & scripting languages

    Launched in 2020, Techticks Digital is a mobile application development company. The firm offers Mobile App Development and Custom Software Development, and is small.

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  • MDG LUCAS DROZDZ Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    30% Branding
    30% UX/UI Design +2
    15% Logo
    10% Web Design

    Focus Areas

    30% JavaScript
    25% PHP
    15% Typescript +4
    10% Redux
    10% SQL
    5% HTML5
    5% jquery

    MDG LUCAS DROZDZ, a small branding agency, is headquartered in Częstochowa, Poland. Their services include Branding and UX/UI Design.

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  • Webby-Soft Logotype

    Not yet reviewed

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

    Services provided

    36% Web Development
    18% Custom Software Development
    10% Blockchain +7
    10% Mobile App Development
    5% Application Testing
    5% Cloud Consulting & SI
    5% ERP Consulting and SI
    5% UX/UI Design
    3% Cybersecurity
    3% IT Managed Services

    Focus Areas

    40% JavaScript
    40% PHP
    10% Other programming & scripting languages +1
    10% SQL

    Webby-Soft is a website development firm. Based in București, Romania and Brașov, Romania, the company was established in 2016. Their team offers Web Development and Custom Software Development.

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  • Micora.NET Kft. Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    2 - 9
    Budapest, Hungary

    Services provided

    25% Web Development
    30% Custom Software Development
    20% API Development +2
    15% E-Commerce Development
    10% UX/UI Design

    Focus Areas

    15% JavaScript
    50% C#
    30% ASP.NET +1
    5% Typescript

    Micora.NET Kft. Is a software development company launched in 2013. The agency provides Custom Software Development and Web Development.

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  • Eros Soft Solutions Logotype

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

    Services provided

    20% Web Development
    20% Direct Marketing
    20% E-Commerce Development +2
    20% Wearable App Development
    20% Web Design

    Focus Areas

    20% JavaScript
    40% PHP
    20% Java +1
    20% Python

    Eros Soft Solutions offers comprehensive software development services, including WooCommerce projects, often starting from scratch. Reviews highlight the company's effective project management, meeting deadlines, and direct access to managers and team members, contributing to a positive and impressive overall client experience.

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  • Cheshta Infotech Logotype

    Cheshta Infotech

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Mobile App Development +6
    10% UX/UI Design
    10% Web Design
    5% Application Management & Support
    5% E-Commerce Development
    5% Logo
    5% Other IT Consulting and SI

    Focus Areas

    20% JavaScript
    60% PHP
    10% AJAX +1
    10% SQL

    Cheshta Infotech is an Indore, India-based custom software development company. Their services include Custom Software Development and Mobile App Development.

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  • Out of Place Studio Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    2 - 9
    Bradford, England

    Services provided

    25% Web Development
    25% Branding
    15% UX/UI Design +3
    15% Web Design
    10% Graphic Design
    10% Low/No Code Development

    Focus Areas

    30% JavaScript
    40% PHP
    15% Java +1
    15% SQL

    Out of Place Studio is a branding company established in 2020. Their team offers Branding and Web Design.

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  • Idea Nativa Logotype

    Idea Nativa

    Not yet reviewed

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

    Services provided

    30% Web Development
    30% Digital Strategy
    30% Pay Per Click +1
    10% Social Media Marketing

    Focus Areas

    75% JavaScript
    25% PHP

    Digital Strategy company Idea Nativa is based in San José, Costa Rica. The team offers Digital Strategy and Pay Per Click.

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  • DipoleTech Innovations Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    50 - 249
    Sahibzada Ajit Singh Nagar, India

    Services provided

    27% Web Development
    16% Custom Software Development
    16% Search Engine Optimization +3
    16% Web Design
    15% Mobile App Development
    10% AR/VR Development

    Focus Areas

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

    DipoleTech Innovations is a midsize Sahibzada Ajit Singh Nagar, India-based web development firm. The team offers Web Development and Search Engine Optimization.

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  • Desarrollo Web Madrid Logotype

    Desarrollo Web Madrid

    Not yet reviewed

    Undisclosed
    Undisclosed
    Freelancer

    Services provided

    50% Web Development
    50% Web Design

    Focus Areas

    35% JavaScript
    50% PHP
    15% AJAX

    Desarrollo Web Madrid is a web design agency and web development company. The firm is located in Madrid, Spain. Their team provides Web Design and Web Development.

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  • Olympia Tech Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    10 - 49
    Sarajevo, Bosnia and Herzegovina

    Services provided

    50% Web Development
    25% IT Staff Augmentation
    15% Mobile App Development +1
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    25% C#
    25% Java +4
    10% ASP.NET
    10% HTML5
    10% PHP
    10% Typescript

    Website development firm Olympia Tech was founded in 2022. The small team focuses on Web Development and IT staff augmentation.

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  • GrewDev Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    2 - 9
    Dhaka, Bangladesh

    Services provided

    30% Web Development
    30% E-Commerce Development
    30% Web Design +1
    10% Graphic Design

    Focus Areas

    30% JavaScript
    40% PHP
    20% HTML5 +1
    10% Other programming & scripting languages

    GrewDev is a web design agency. They provide Web Design and Web Development and were founded in 2019. The company is based in Dhaka, Bangladesh.

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  • Startercode Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Content Writing Services
    20% Conversion Optimization +2
    20% Custom Software Development
    20% Search Engine Optimization

    Focus Areas

    30% JavaScript
    40% HTML5
    30% jquery

    Conversion Optimization company Startercode was launched in 2022. The small team provides Conversion Optimization and Search Engine Optimization.

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  • Scandia Logotype

    Not yet reviewed

    $25,000+
    $150 - $199 / hr
    10 - 49
    Providence, RI

    Services provided

    15% Web Development
    30% UX/UI Design
    15% Custom Software Development +3
    15% Digital Strategy
    15% Mobile App Development
    10% E-Commerce Development

    Focus Areas

    30% JavaScript
    30% C#
    15% SQL +2
    15% Swift
    10% AJAX

    Scandia is a Providence, Rhode Island-based user experience design company. Their services include UX/UI Design and Digital Strategy.

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  • Wolven Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    10 - 49
    Florianopolis, Brazil

    Services provided

    35% Web Development
    45% E-Commerce Development
    10% Low/No Code Development +1
    10% UX/UI Design

    Focus Areas

    35% JavaScript
    20% Java
    20% Typescript +3
    15% SQL
    5% C#
    5% Ruby

    Wolven is a web development company. The Florianopolis, Brazil-based team provides Web Development and E-Commerce Development.

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  • Orange Technolab Pvt Ltd Logotype

    Not yet reviewed

    $5,000+
    $200 - $300 / hr
    50 - 249
    Ahmedabad, India

    Services provided

    10% Web Development
    60% Mobile App Development
    10% AR/VR Development +2
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    11% JavaScript
    12% Kotlin
    11% AJAX +6
    11% Objective C
    11% Python
    11% Ruby
    11% SQL
    11% Swift
    11% Visual Basic

    Orange Technolab Pvt Ltd is an Ahmedabad, India-based application development company. The team offers Mobile App Development and Web Design.

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  • Deduxer Logotype

    Deduxer

    Not yet reviewed

    $5,000+
    Undisclosed
    10 - 49

    Services provided

    20% Web Development
    30% UX/UI Design
    20% Mobile App Development +3
    15% Web Design
    10% Low/No Code Development
    5% Logo

    Focus Areas

    60% JavaScript
    15% Swift
    10% Redux +3
    5% PHP
    5% SQL
    5% Typescript

    Deduxer is a Chisinau, Moldova-based UX company. Their services include UX/UI Design and Web Design.

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  • Express Marketing Network Logotype

    Express Marketing Network

    5.0 4 reviews
    $1,000+
    Undisclosed
    50 - 249

    Services provided

    50% Web Development
    20% E-Commerce Development
    20% Web Design +1
    10% Mobile App Development

    Focus Areas

    50% JavaScript
    30% PHP
    20% Python

    Express Marketing Network is a web development company excelling in custom website development and full-stack web development. Reviews indicate a 100% satisfaction rate, highlighting their professional project management, timely delivery, and responsiveness. Clients appreciate their creative solutions and ability to combine technical expertise with a genuine care for projects, resulting in improved user engagement and SEO outcomes.

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    Reviews mention Well-organized projects

    Clients have consistently praised Express Marketing Network for their well-organized project management and clear communication. One client noted that the team delivered items on time and often ahead of schedule, fostering confidence and smooth collaboration. The organized approach, coupled with attention to detail and commitment to quality, contributed to a productive experience, with no significant areas for improvement identified. Overall, the sentiment reflects a high level of satisfaction regarding project organization and execution.
    • Web Development & Design for Web Design Company
      5.0 Aug 15, 2025

      The team managed the project with professionalism and clear communication. They consistently delivered items on time and often ahead of schedule. Whenever I had questions or requested adjustments, they responded quickly and thoughtfully, making sure my needs were met. Their organized approach gave me confidence throughout the process and made collaboration smooth and productive.

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    3 of 3 Web Development reviews are 5 stars
    2 new reviews for Web Development in past 6 months
    Less than $10,000 avg. project cost

    Web Development PROJECT HIGHLIGHT

    Web & Mobile App Development for Content-Sharing Platform

    5.0 — Express Marketing Network developed a web and mobile app for a content-sharing platform. The team built user profile features, a content feed, a commenting system, discovery tools, and an admin Read more
    Read 3 Reviews

    Industry Experience

    Express Marketing Network has demonstrated strong expertise in diverse industries including Education, Information Technology, and Arts & Entertainment. In Education, they excelled in prototyping and app development, leading to significant user engagement and content submissions. In IT, they successfully redesigned a website, enhancing user experience and SEO performance. In the Arts sector, they delivered polished web design solutions, ensuring responsive layouts and streamlined navigation. Overall, clients commend their professionalism, responsiveness, and creative problem-solving across all sectors.

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    Select Industry to see insights

    Education Information technology Arts, entertainment & music

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    Washington, United States (1) Columbus, North Carolina (1) Farmersville, Ohio (1)
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  • Webeet.io Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    50 - 249
    Tel Aviv-Yafo, Israel

    Services provided

    30% Web Development
    20% Custom Software Development
    10% AI Consulting +4
    10% API Development
    10% DevOps Managed Services
    10% Low/No Code Development
    10% Microservices Architecture Services

    Focus Areas

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

    Webeet.io is a custom software development company headquartered in Amsterdam, Netherlands and Tel Aviv-Yafo, Israel. They offer Custom Software Development and Web Development.

    Read more
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  • Techinoid Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    50 - 249
    Plano, TX

    Services provided

    20% Web Development
    20% Mobile App Development
    20% Web Design +3
    15% Cloud Consulting & SI
    15% Cybersecurity
    10% Recruitment Process Outsourcing

    Focus Areas

    50% JavaScript
    50% HTML5

    Techinoid is a midsize web design agency headquartered in Plano, Texas and Lahore, Pakistan. Their services include Web Design and Web Development.

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  • Codvix Digital Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    دبي, United Arab Emirates

    Services provided

    20% Web Development
    20% AI Development
    20% Custom Software Development +2
    20% Mobile App Development
    20% Search Engine Optimization

    Focus Areas

    50% JavaScript
    50% HTML5

    Codvix Digital, a midsize SEO agency, is based in دبي, United Arab Emirates. Their services include Search Engine Optimization and Custom Software Development.

    Read more
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  • WEBLISH Logotype

    WEBLISH

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Email Marketing
    20% Search Engine Optimization +2
    20% Social Media Marketing
    20% Web Design

    Focus Areas

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

    WEBLISH is a social media marketing agency. The midsize Sheridan, Wyoming-based team specializes in Social Media Marketing and Email Marketing. The firm was launched in 2025.

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  • Web Design Vibe Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Fort Washington, PA

    Services provided

    20% Web Development
    20% Branding
    20% Mobile App Development +2
    20% Video Production
    20% Web Design

    Focus Areas

    50% JavaScript
    50% PHP

    Web Design Vibe is a midsize branding firm. Founded in 2021, the team offers Branding and Web Design.

    Read more
    View Profile
  • Pandera Labs Logotype

    Not yet reviewed

    $50,000+
    $150 - $199 / hr
    50 - 249
    Chicago, IL

    Services provided

    20% Web Development
    20% Mobile App Development
    15% Custom Software Development +4
    15% IoT Development
    10% AI Development
    10% Product Design
    10% UX/UI Design

    Focus Areas

    40% JavaScript
    40% Java
    20% Objective C

    Pandera Labs, an app development firm, was founded in 2014. The midsize team focuses on Mobile App Development and Web Development.

    Read more
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  • HorizonCore InfoSoft Pvt. Ltd. Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    50 - 249
    Clifton, NJ

    Services provided

    20% Web Development
    40% E-Commerce Development
    20% Custom Software Development +1
    20% Mobile App Development

    Focus Areas

    10% JavaScript
    25% PHP
    20% SQL +4
    15% ASP.NET
    10% AJAX
    10% Python
    10% Visual Basic

    HorizonCore InfoSoft Pvt. Ltd. Is a midsize e-commerce development firm. Established in 2008, the team focuses on E-Commerce Development and Custom Software Development.

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  • Poligon Tech Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    2 - 9
    Cluj-Napoca, Romania

    Services provided

    20% Web Development
    35% Mobile App Development
    25% Custom Software Development +2
    10% Low/No Code Development
    10% UX/UI Design

    Focus Areas

    40% JavaScript
    35% Redux
    25% Other programming & scripting languages

    Poligon Tech is a Cluj-Napoca, Romania-based software development company. They focus on Custom Software Development and Mobile App Development and were launched in 2021.

    Read more
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  • Warrior King Society Logotype

    Warrior King Society

    Not yet reviewed

    $5,000+
    $150 - $199 / hr
    2 - 9

    Services provided

    25% Web Development
    50% Web Design
    25% Search Engine Optimization

    Focus Areas

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

    Web design company Warrior King Society is in. Launched in 2012, the team focuses on Web Design and Search Engine Optimization.

    Read more
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  • ABR Platform Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    30% JavaScript
    30% Other programming & scripting languages
    25% Python +1
    15% HTML5

    ABR Platform is a SEO services firm. Launched in 2023, the team offers Search Engine Optimization and Web Design. The firm is in Squamish, Canada.

    Read more
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  • ReemRose Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    2 - 9
    Miami, FL

    Services provided

    15% Web Development
    15% API Development
    15% Cloud Consulting & SI +4
    15% Enterprise App Modernization
    15% Microservices Architecture Services
    15% Other Application Development
    10% Other IT Consulting and SI

    Focus Areas

    20% JavaScript
    20% Go
    20% HTML5 +2
    20% Java
    20% Typescript

    Launched in 2024, ReemRose is a small Miami, Florida-based cloud consulting & SI company. Their services include cloud consulting & SI and Web Development.

    Read more
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  • Diamond Code Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    50% Custom Software Development
    20% Mobile App Development +1
    10% UX/UI Design

    Focus Areas

    50% JavaScript
    50% PHP

    Diamond Code is a small custom software development firm. Established in 2012, the team focuses on Custom Software Development and Web Development.

    Read more
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  • eSquall LLC Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    30% Custom Software Development
    20% Mobile App Development +4
    10% AI Development
    10% E-Commerce Development
    5% Enterprise App Modernization
    5% Generative AI

    Focus Areas

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

    Software development firm eSquall LLC was established in 2017. The firm specializes in Custom Software Development and Web Development.

    Read more
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  • Shift8 Web Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Branding
    20% Search Engine Optimization +3
    20% Web Design
    10% E-Commerce Development
    10% Mobile App Development

    Focus Areas

    15% JavaScript
    60% PHP
    20% Python +1
    5% Perl

    Branding firm Shift8 Web was founded in 2008. In Toronto, Canada, the team focuses on Branding and Search Engine Optimization.

    Read more
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  • goCreations Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Kerkira, Greece

    Services provided

    20% Web Development
    15% Web Design
    10% Conversion Optimization +7
    10% Graphic Design
    10% Logo
    10% Pay Per Click
    10% Search Engine Optimization
    5% Email Marketing
    5% Social Media Marketing
    5% UX/UI Design

    Focus Areas

    25% JavaScript
    50% PHP
    10% SQL +3
    5% AJAX
    5% Go
    5% XML

    GoCreations is a web development company. The team specializes in Web Development and Web Design, and the company is headquartered in Kerkira, Greece.

    Read more
    View Profile
  • Cronus Designs LLC Logotype

    Cronus Designs LLC

    1.0 1 review
    $5,000+
    $50 - $99 / hr
    10 - 49

    Services provided

    25% Web Development
    25% Custom Software Development
    20% Mobile App Development +2
    15% Blockchain
    15% Marketing Strategy

    Focus Areas

    30% JavaScript
    20% Java
    20% Typescript +2
    15% PHP
    15% SQL

    Cronus Designs LLC appears to be a web development company, but the feedback from reviews suggests significant challenges with communication and project management. The reviews are entirely negative, with 100% of reviewers expressing dissatisfaction, specifically referencing unresponsive communication and unmet promises regarding project timelines.

    See all 1 projects

    Industry Experience

    Cronus Designs LLC has provided services primarily in the Advertising & Marketing industry. Feedback indicates challenges in communication and project management, with clients expressing dissatisfaction regarding responsiveness and timely deliverables. Despite a lack of unique strengths noted in these reviews, potential clients in the industry may find value in their ability to handle basic web design tasks. However, those seeking more complex or responsive partnerships might consider these factors carefully.

    Read All Reviews

    Select Industry to see insights

    Advertising & marketing

    Average Project Cost Breakdown

    Less than $10,000 (1)

    What Clients Have Said

    Clients have expressed mixed sentiments regarding Cronus Designs LLC's value for money. One reviewer noted a lack of responsiveness and dissatisfaction with the company's promise to deliver a quick turnaround, describing the service as disappointing given the cost. They highlighted that despite the initial appeal, the company's failure to meet communication expectations detracted from the overall value. This suggests a need for improvement in client interaction relative to pricing.
    Read All Reviews
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  • AINZICS Logotype

    AINZICS

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

    Services provided

    20% Web Development
    35% Blockchain
    20% Mobile App Development +3
    10% Custom Software Development
    10% Low/No Code Development
    5% Other Application Development

    Focus Areas

    45% JavaScript
    30% Typescript
    25% HTML5

    AINZICS offers high-quality development services with a focus on blogging and website management, including domain management, WordPress installation, and content publishing. Reviews highlight competitive pricing, excellent communication, and impressive project management. Clients appreciate AINZICS for their lifetime maintenance support and have recommended them to others, reflecting positive feedback on their professionalism and service delivery.

    See all 1 projects
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Why Trust Clutch

At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.

Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. Our team of specialists confirms the identity of each reviewer, ensures the project is legitimate, and only publishes reviews that meet our strict criteria.

Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.

We evaluate service providers using a structured methodology that combines:

  • In-depth client interviews and ratings
  • Comprehensive project details
  • Market presence
  • Portfolio examples and industry recognition

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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Clutch’s commitment to transparency is ongoing. We’re constantly refining our systems to protect the integrity of reviews and support you in finding the right agency.

Ability to deliver
Focus
Clutch Leaders Matrix

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

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

List of the Top 15 JavaScript Development Companies

  1. xfive Logotype

    xfive

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

    Ability to deliver

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

    Service focus

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

    ImageX

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

    Ability to deliver

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

    Service focus

    90% Web Development
    50% JavaScript
    10% Other
    View Profile Visit Website
  3. Brainhub Logotype

    Brainhub

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

    Ability to deliver

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

    Service focus

    45% Web Development
    75% JavaScript
    55% Other
    View Profile Visit Website
  4. The Software House Logotype

    The Software House

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

    Ability to deliver

    39/40.0
    19.2/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

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

    ATEAM SOFT SOLUTIONS

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

    Ability to deliver

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

    Service focus

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

    Airdev

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

    Ability to deliver

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

    Service focus

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

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    Softonix

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

    Ability to deliver

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

    Service focus

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

    Toptal

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

    Ability to deliver

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

    Service focus

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

    Lizard Global

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

    Ability to deliver

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

    Service focus

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

    INOXOFT

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

    Ability to deliver

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

    Service focus

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

    PopArt Studio

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

    Ability to deliver

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

    Service focus

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

    GeekyAnts

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

    Ability to deliver

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

    Service focus

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

    SpdLoad

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

    Ability to deliver

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

    Service focus

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

    Brainium Information Technologies

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

    Ability to deliver

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

    Service focus

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

    HTMLPanda

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

    Ability to deliver

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

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  17. 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
  19. Techuz InfoWeb Pvt. Ltd. Logotype

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  20. 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
  21. Human Made Logotype

    Human Made

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

    Ability to deliver

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

    Service focus

    100% Web Development
    30% JavaScript
    View Profile Visit Website
  22. Sigma Software Group Logotype

    Sigma Software Group

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

    Ability to deliver

    38.4/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

    21% Web Development
    18% JavaScript
    79% 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. Experion Technologies Logotype

    Experion Technologies

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

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

    Blazity

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

    Ability to deliver

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

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

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

    Probey Services

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

    Ability to deliver

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

    Service focus

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

    Vincit

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

    Ability to deliver

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

    Service focus

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

    Oshyn

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

    Ability to deliver

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

    Service focus

    100% Web Development
    40% JavaScript
    View Profile Visit Website

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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