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Top JavaScript Developers

JavaScript powers everything from interactive websites to complex enterprise applications. Partnering with an experienced JavaScript development agency ensures your product is fast, secure, and ready to scale. Clutch makes it easy to find trusted providers by publishing in-depth, verified client reviews and transparent performance data. Use our filters to sort agencies by budget, location, framework expertise, and more. Looking for regional specialists? Browse firms in the United States, United Kingdom, or Canada to compare portfolios and pricing in your market. Start exploring today and shortlist partners that align with your goals.
Ratings Updated: December 22, 2025
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15 Leaders 15 Contenders

21,443 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Featured

    What are Featured Providers?

    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

    4.9 87 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

    50% Web Development
    50% Custom Software Development

    Focus Areas

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

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

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    Reviews mention Reasonable pricing

    Overall sentiment regarding Digis' pricing is highly positive, as multiple clients noted their competitive rates and good value for cost. One client specifically mentioned that Digis offered 'great prices and a suitable schedule,' while another highlighted the 'quality to cost ratio' as impressive. Additionally, clients expressed satisfaction with how Digis' pricing fit their budgets and aligned with their expectations, further solidifying their reputation for reasonable pricing in the industry.
    • IT Staff Augmentation for Software Dev Company
      5.0 Dec 31, 2023

      We appreciated how DIGIS consistently met deadlines with high-quality work. Their team communicates effectively in English, making the collaboration seamless. Overall, they offer excellent value for the price, making them a standout choice.

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    • Development for Media Company
      5.0 Feb 13, 2019

      The quality to cost ratio DIGIS provided was impressive. They offered very competitive prices and adhered to the schedule we set. Based on our research, we had expected higher costs.

      Read Full Review
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    Industry Experience

    Digis has demonstrated strong expertise across several industries, notably manufacturing, information technology, media, and education. Clients highlighted their effective project management, timely delivery, and high-quality work. In manufacturing, Digis improved website functionality, enhancing user experience. In IT, they provided specialized development support, notably in Scala and React, leading to increased efficiency. Overall, client feedback reflects a positive sentiment, suggesting strong alignment for projects across 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 Manufacturing Media

    Average Project Cost Breakdown

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

    What Clients Have Said

    Clients consistently praised Digis for their competitive pricing and strong value for money. Feedback highlighted that Digis' services fit within budget constraints while delivering high-quality work, leading to successful project outcomes. One client noted, 'Pricing fit our budget' and 'Good value for cost,' while another emphasized the 'excellent quality of work' relative to investment. Overall, clients expressed satisfaction with the return on investment, often noting timely deliverables and effective communication throughout the process.
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    $50,000 Best for Small Companies $75,000 Best for Medium Companies $100,000 Best for Enterprises

    Custom Product Development

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

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Washington, DC

    Services provided

    30% Web Development
    30% Cybersecurity
    20% Cloud Consulting & SI +1
    20% IT Strategy Consulting

    Focus Areas

    50% JavaScript
    50% PHP

    Xykon is a Cybersecurity company. In Washington, District of Columbia, the company was founded in 2007. Their team focuses on Cybersecurity and Web Development.

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  • PushCode, Inc. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Gloucester , England

    Services provided

    30% Web Development
    40% Web Design
    30% Content Marketing

    Focus Areas

    50% JavaScript
    50% Ruby

    Small web design agency PushCode, Inc., is in Gloucester , England. Their services include Web Design and Content Marketing.

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  • Spindletop Digital LLC Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Houston, TX

    Services provided

    30% Web Development
    35% BI & Big Data Consulting & SI
    35% Blockchain

    Focus Areas

    50% JavaScript
    50% HTML5

    Spindletop Digital LLC is a small big data company. Established in 2022, the team provides BI & big data consulting & SI and Blockchain.

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  • WebKitty Creative Services LLC. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Las Vegas, NV

    Services provided

    30% Web Development
    30% Web Design
    20% CRM Consulting and SI +1
    20% Search Engine Optimization

    Focus Areas

    50% JavaScript
    50% HTML5

    WebKitty Creative Services LLC. Is a web design company. Established in 2010, the company is in Las Vegas, Nevada. Their services include Web Design and Web Development.

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  • Round4, LLC Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Mechanicsburg, PA

    Services provided

    30% Web Development
    30% Web Design
    15% Logo +2
    15% Video Production
    10% Corporate Photography

    Focus Areas

    50% JavaScript
    50% HTML5

    Round4, LLC is a web design agency. They provide Web Design and Web Development and are located in Mechanicsburg, Pennsylvania.

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  • CUBICALSEO Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9
    New Delhi, India

    Services provided

    10% Web Development
    25% Search Engine Optimization
    10% Content Marketing +10
    10% Mobile App Development
    10% Social Media Marketing
    5% Custom Software Development
    5% E-Commerce Development
    5% Mobile & App Marketing
    5% Pay Per Click
    5% UX/UI Design
    5% Web Design
    4% Digital Strategy
    1% Other Digital Marketing

    Focus Areas

    14% JavaScript
    57% PHP
    15% SQL +1
    14% Other programming & scripting languages

    CUBICALSEO is a SEO company. Their team is in New Delhi, India. The firm specializes in Search Engine Optimization and Social Media Marketing.

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  • Digital Edge 360 Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Kolkata, India

    Services provided

    10% Web Development
    20% Graphic Design
    20% Pay Per Click +4
    15% Search Engine Optimization
    15% Social Media Marketing
    10% Mobile App Development
    10% Web Design

    Focus Areas

    17% JavaScript
    39% PHP
    17% SQL +2
    16% AJAX
    11% Python

    Digital Edge 360 is a pay per click company. The midsize Kolkata, India-based team offers Pay Per Click and Graphic Design. The firm was founded in 2021.

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  • 2TAPP Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    50 - 249
    Linda-a-Velha, Portugal

    Services provided

    10% Web Development
    15% AR/VR Development
    12% Low/No Code Development +14
    10% Mobile App Development
    5% AI Consulting
    5% AI Development
    5% Application Testing
    5% DevOps Managed Services
    5% Engineering
    5% Enterprise App Modernization
    5% Graphic Design
    5% Product Design
    5% Robotics Process Automation
    5% UX/UI Design
    1% Custom Software Development
    1% Other Application Development
    1% Web Design

    Focus Areas

    17% JavaScript
    17% Java
    17% Python +5
    11% Objective C
    11% Redux
    11% Swift
    10% Kotlin
    6% HTML5

    2TAPP is an AR/VR development company in Linda-a-Velha, Portugal. They specialize in AR/VR development and Web Development.

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  • Fineteklabs Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    12% Low/No Code Development
    10% AI Development +15
    10% Custom Software Development
    5% AI Consulting
    5% AR/VR Development
    5% Application Testing
    5% Content Marketing
    5% Cybersecurity
    5% Digital Strategy
    5% E-Commerce Development
    5% IT Strategy Consulting
    5% IoT Development
    5% Product Design
    5% Social Media Marketing
    1% Mobile App Development
    1% UX/UI Design
    1% Web Design

    Focus Areas

    12% JavaScript
    18% Python
    18% SQL +7
    12% Java
    12% Objective C
    6% C#
    6% C++
    6% HTML5
    6% Redux
    4% Kotlin

    Software development firm Fineteklabs is headquartered in Nairobi, Kenya. The team offers Custom Software Development and Web Development.

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  • SocioPedia Digital Marketing Agency Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Advertising
    10% Search Engine Optimization +13
    10% Web Design
    5% Branding
    5% Content Marketing
    5% Conversion Optimization
    5% Demand Generation Marketing
    5% Digital Strategy
    5% Graphic Design
    5% Logo
    5% Mobile App Development
    5% Pay Per Click
    5% Social Media Marketing
    5% Video Marketing
    5% Wearable App Development

    Focus Areas

    11% JavaScript
    11% Perl
    11% Python +11
    11% SQL
    11% Visual Basic
    5% AJAX
    5% ASP.NET
    5% Apex
    5% C#
    5% Ember.js
    5% Java
    5% Objective C
    5% Redux
    5% Ruby

    SocioPedia Digital Marketing Agency is an Advertising company. Based in Dehradun, India, their team offers Advertising and Search Engine Optimization.

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  • Codbos Software Solutions Pvt Ltd Logotype

    Codbos Software Solutions Pvt Ltd

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

    Services provided

    10% Web Development
    20% E-Commerce Development
    10% API Development +6
    10% Custom Software Development
    10% Low/No Code Development
    10% Mobile App Development
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    40% PHP
    20% Other programming & scripting languages +2
    10% Kotlin
    10% SQL

    Codbos is India’s leading mobile app and web app development company. Codbos provides services like web app & website development, mobile app development, graphic designing, digital marketing,

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  • ClickGrit Logotype

    5.0 1 review
    Undisclosed
    < $25 / hr
    2 - 9
    Makati, Philippines

    Services provided

    20% Web Development
    20% Search Engine Optimization
    20% Social Media Marketing +4
    10% Content Marketing
    10% Content Writing Services
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    10% JavaScript
    25% Other programming & scripting languages
    25% SQL +2
    20% PHP
    20% Python

    Let ClickGrit handle the online buzz, you handle your business growth. Ignite your online potential with SEO, Web dev, PPC, SMM, Content marketing, and Online marketing training.

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  • D'Vista Agency - Digital Marketing & Media Logotype

    4.0 1 review
    Undisclosed
    $25 - $49 / hr
    2 - 9
    Salmiya, Kuwait

    Services provided

    10% Web Development
    10% Branding
    10% Graphic Design +10
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Video Production
    8% Digital Strategy
    6% Corporate Photography
    6% Mobile App Development
    5% Advertising
    5% Affiliate Marketing
    5% Content Marketing
    5% Web Design

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% PHP +2
    20% SQL
    20% Visual Basic

    D'Vista Agency - Digital Marketing & Media specializes in digital marketing strategy and management, including social media account handling. Overall feedback indicates that while deliverables were satisfactory, they were not always completed at all stages. Clients appreciated their digital savviness but suggested improvements in providing more detailed and commercially aware strategies.

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  • Devand Agency Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Branding
    15% Digital Strategy +7
    14% Low/No Code Development
    10% Graphic Design
    5% Advertising
    5% Business Consulting
    5% Marketing Strategy
    5% Social Media Marketing
    1% Custom Software Development

    Focus Areas

    10% JavaScript
    10% PHP
    10% Python +11
    10% Ruby
    10% SQL
    10% Visual Basic
    5% ASP.NET
    5% C#
    5% C++
    5% Ember.js
    5% Java
    5% Kotlin
    5% Objective C
    5% Swift

    Devand Agency is a web development firm founded in 2019. The team provides Web Development and Branding.

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  • Elicon Digital Logotype

    Elicon Digital

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% IT Strategy Consulting +3
    20% Mobile App Development
    10% BI & Big Data Consulting & SI
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    70% Typescript
    10% Python +2
    5% PHP
    5% Rust

    Elicon Digital is an IT strategy consulting company. They are based in Nicosia, Cyprus and have small team of experts. Their services include IT strategy consulting and BI & big data consulting &

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  • Web Design Cebu Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    2 - 9
    City of Naga, Philippines

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Email Marketing +3
    20% Search Engine Optimization
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    10% JavaScript
    25% PHP
    20% AJAX +4
    15% SQL
    10% HTML5
    10% Redux
    10% jquery

    Established in 2021, Web Design Cebu, a small Email Marketing company, is based in City of Naga, Philippines. Their team offers Email Marketing and Search Engine Optimization.

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  • Onpolar Logotype

    Onpolar

    Not yet reviewed

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

    Services provided

    10% Web Development
    50% E-Commerce Development
    10% API Development +4
    10% Blockchain
    10% Custom Software Development
    5% AI Consulting
    5% UX/UI Design

    Focus Areas

    20% JavaScript
    20% Typescript
    10% Kotlin +5
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% Ruby
    10% Rust

    Launched in 2021, Onpolar is a small Tallinn, Estonia-based e-commerce development firm. Their team offers E-Commerce Development and Custom Software Development.

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  • Rebase IT Labs Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% IT Strategy Consulting +3
    20% Mobile App Development
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    40% Typescript
    30% HTML5 +2
    10% SQL
    10% jquery

    Founded in 2019, Rebase IT Labs is a small Mumbai, India-based IT strategy consulting company. Their services include IT strategy consulting and cloud consulting & SI.

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  • Mazecode Logotype

    Mazecode

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    10% JavaScript
    15% Java
    15% PHP +8
    15% Python
    10% Kotlin
    10% Ruby
    5% ASP.NET
    5% C#
    5% HTML5
    5% Other programming & scripting languages
    5% Swift

    Mazecode is an UX design agency founded in 2023. Their services include UX/UI Design and Mobile App Development.

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  • Cresol360 Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Branding
    20% Mobile App Development +3
    20% Social Media Marketing
    20% UX/UI Design
    10% Low/No Code Development

    Focus Areas

    20% JavaScript
    20% C#
    20% C++ +2
    20% HTML5
    20% PHP

    Based in Bolton, England and Karachi, Pakistan, Cresol360 is a branding company. They specialize in Branding and Social Media Marketing.

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  • Eraloop Ltd Logotype

    Eraloop Ltd

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% Digital Strategy +7
    10% Email Marketing
    10% Marketing Strategy
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    50% Python
    20% SQL +1
    10% HTML5

    Marketing Strategy company Eraloop Ltd is in London, England. Launched in 2023, the team specializes in Marketing Strategy and Digital Strategy.

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  • IT Services Company Logotype

    IT Services Company

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    2 - 9

    Services provided

    10% Web Development
    10% AI Consulting
    10% AI Development +7
    10% Custom Software Development
    10% Cybersecurity
    10% DevOps Managed Services
    10% Generative AI
    10% IT Staff Augmentation
    10% IT Strategy Consulting
    10% Mobile App Development

    Focus Areas

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

    IT Services Company is a small IT strategy consulting company in Kozhikode, India and Dubai, United Arab Emirates. The team offers IT strategy consulting and Cybersecurity.

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  • DOF Technologies Logotype

    DOF Technologies

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Application Testing
    20% IT Strategy Consulting +2
    20% Mobile App Development
    20% UX/UI Design

    Focus Areas

    10% JavaScript
    60% Typescript
    10% ASP.NET +2
    10% Other programming & scripting languages
    10% SQL

    DOF Technologies is an UX design agency established in 2025. Their team specializes in UX/UI Design and IT strategy consulting.

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  • DeLemon Studio Logotype

    5.0 1 review
    Undisclosed
    Undisclosed
    2 - 9
    Manama, Bahrain

    Services provided

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

    Focus Areas

    18% JavaScript
    18% Java
    18% PHP +3
    18% Python
    16% SQL
    12% Scala

    We do design, develop & deploy.DeLemon Studio is a digital design & development agency having an experience of more than 9 years in digital industry. We do digital design, brand design,

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  • Enova Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Branding
    10% Custom Software Development +12
    10% UX/UI Design
    10% Web Design
    5% Advertising
    5% Content Marketing
    5% Conversion Optimization
    5% Digital Strategy
    5% Email Marketing
    5% Graphic Design
    5% Market Research
    5% Marketing Strategy
    5% Mobile App Development
    5% Search Engine Optimization

    Focus Areas

    15% JavaScript
    10% AJAX
    10% ASP.NET +7
    10% C#
    10% HTML5
    10% Other programming & scripting languages
    10% Python
    10% Typescript
    10% jquery
    5% SQL

    Enova is a branding company. Their small team of employees is headquartered in Dallas, Texas. Their team provides Branding and Web Design.

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  • Golden Beacon Media Private Limited Logotype

    4.0 1 review
    Undisclosed
    < $25 / hr
    50 - 249
    Noida, India

    Services provided

    10% Web Development
    35% Search Engine Optimization
    15% Digital Strategy +3
    15% Social Media Marketing
    15% UX/UI Design
    10% Low/No Code Development

    Focus Areas

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

    Golden Beacon Media Pvt. Ltd. is a leading firm deals in Web Development, Marketing Communications, Brand Management and nurtured by innovative, collaborative, and diverse talents.

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  • Episty Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    Freelancer
    London, England

    Services provided

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

    Focus Areas

    15% JavaScript
    20% Objective C
    20% Swift +8
    10% PHP
    5% AJAX
    5% ASP.NET
    5% C#
    5% Java
    5% Python
    5% SQL
    5% XML

    Episty is an UX design company. The firm is in London, England. Their services include UX/UI Design and Mobile App Development.

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  • Marsmedia Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    Freelancer
    Beograd, Serbia

    Services provided

    20% Web Development
    20% Application Testing
    20% Custom Software Development +2
    20% UX/UI Design
    20% Web Design

    Focus Areas

    20% JavaScript
    20% PHP
    20% Python +2
    20% SQL
    20% XML

    Small custom software development company Marsmedia, is headquartered in Beograd, Serbia. The team specializes in Custom Software Development and UX/UI Design.

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  • Daltum Systems Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Monterrey, Mexico

    Services provided

    10% Web Development
    70% IT Staff Augmentation
    10% Custom Software Development +1
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    20% C#
    10% AJAX +6
    10% ASP.NET
    10% Go
    10% Java
    10% Kotlin
    10% Python
    10% SQL

    Daltum Systems is an IT staff augmentation company. The Monterrey, Mexico-based company offers IT staff augmentation and Custom Software Development.

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  • Ranolia Ventures LLC Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Mobile App Development
    5% Affiliate Marketing +15
    5% Application Testing
    5% Content Marketing
    5% Conversion Optimization
    5% Custom Software Development
    5% Digital Strategy
    5% E-Commerce Development
    5% Email Marketing
    5% Enterprise App Modernization
    5% Mobile & App Marketing
    5% Other Digital Marketing
    5% Pay Per Click
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design
    5% Web Design

    Focus Areas

    10% JavaScript
    30% PHP
    10% AJAX +6
    10% Java
    10% Kotlin
    10% SQL
    10% Swift
    5% ASP.NET
    5% Python

    Ranolia Ventures LLC, a web development company, is in Wilmington, Delaware and Gurugram, India. They offer Web Development and Mobile App Development.

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  • SEOAlk Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    40% Search Engine Optimization
    20% IT Strategy Consulting +1
    20% Web Design

    Focus Areas

    20% JavaScript
    35% PHP
    35% SQL +1
    10% HTML5

    SEOAlk is a SEO agency. The team is based in Milano, Italy, and their services include Search Engine Optimization and Web Design.

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  • Hashtag Orange Advertising Pvt. Ltd. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Gurugram, India

    Services provided

    10% Web Development
    20% Search Engine Optimization
    15% Pay Per Click +6
    10% Advertising
    10% Low/No Code Development
    10% Mobile App Development
    10% Social Media Marketing
    10% Video Production
    5% Affiliate Marketing

    Focus Areas

    10% JavaScript
    20% PHP
    10% AJAX +6
    10% Objective C
    10% Other programming & scripting languages
    10% Python
    10% SQL
    10% Swift
    10% Visual Basic

    Hashtag Orange Advertising Pvt. Ltd. Is a SEO company. Located in Gurugram, India, the firm was launched in 2018. Their team focuses on Search Engine Optimization and Web Development.

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  • Intelloger Technologies Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    35% ERP Consulting and SI
    10% Custom Software Development +6
    10% IT Managed Services
    10% IT Staff Augmentation
    10% IoT Development
    5% DevOps Managed Services
    5% IT Strategy Consulting
    5% Mobile App Development

    Focus Areas

    10% JavaScript
    10% C#
    10% SQL +14
    5% AJAX
    5% ASP
    5% ASP.NET
    5% Apex
    5% HTML5
    5% Java
    5% Kotlin
    5% Objective C
    5% PHP
    5% Redux
    5% Swift
    5% Typescript
    5% XML
    5% jquery

    Intelloger Technologies is an ERP consulting and SI company. They were launched in 2012 and offer ERP consulting and SI and IT managed services.

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  • RobertPeterson.nl Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    40% IT Managed Services
    20% Search Engine Optimization +3
    10% Cybersecurity
    10% Email Marketing
    10% Low/No Code Development

    Focus Areas

    30% JavaScript
    30% PHP
    30% Python +1
    10% HTML5

    RobertPeterson.nl is a Koudum, Netherlands-based IT managed services company. They offer IT managed services and Search Engine Optimization.

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  • In Color Logotype

    Not yet reviewed

    $1,000+
    $150 - $199 / hr
    Freelancer
    St. Petersburg, FL

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Graphic Design +2
    20% Print Design
    20% Video Production

    Focus Areas

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

    In Color is a graphic design agency based in St. Petersburg, Florida. Established in 1989, the team provides Graphic Design and Print Design.

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  • Sparkix Technologies Logotype

    Sparkix Technologies

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% AI Development
    30% Generative AI +2
    20% Mobile App Development
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    25% Python
    15% Redux +5
    10% Kotlin
    10% Other programming & scripting languages
    10% SQL
    10% Swift
    10% Typescript

    Sparkix Technologies, a small artificial intelligence company, is based in Gujranwala, Pakistan. Their services include Artificial Intelligence and Generative AI.

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  • Nusser Studios Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% E-Commerce Development
    15% Email Marketing +6
    15% Graphic Design
    10% Digital Strategy
    10% Low/No Code Development
    10% Search Engine Optimization
    5% Branding
    5% Logo

    Focus Areas

    30% JavaScript
    30% PHP
    10% SQL +4
    10% Typescript
    10% XML
    5% Elixir
    5% Go

    Nusser Studios, a website development company, offers Web Development and Email Marketing. The agency is based in Wichita, Kansas.

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  • Khalil Ahmed Logotype

    Khalil Ahmed

    Not yet reviewed

    Undisclosed
    < $25 / hr
    Freelancer

    Services provided

    30% Web Development
    30% E-Commerce Development
    30% Web Design +1
    10% Content Writing Services

    Focus Areas

    15% JavaScript
    15% AJAX
    15% HTML5 +4
    15% PHP
    15% SQL
    15% jquery
    10% XML

    Founded in 2020, Khalil Ahmed is a small Karachi, Pakistan-based web design agency. Their services include Web Design and Web Development.

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  • Born Creative Logotype

    Not yet reviewed

    Undisclosed
    $50 - $99 / hr
    Freelancer
    Cambuslang, Scotland

    Services provided

    20% Web Development
    20% Graphic Design
    20% Logo +2
    20% UX/UI Design
    20% Web Design

    Focus Areas

    25% JavaScript
    25% AJAX
    25% PHP +1
    25% SQL

    Web design company Born Creative is based in Cambuslang, Scotland. They offer Web Design and UX/UI Design and were established in 2020.

    Read more
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  • Webdesign Weimar Logotype

    Webdesign Weimar

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% IT Managed Services
    20% UX/UI Design +3
    20% Web Design
    10% Pay Per Click
    10% Search Engine Optimization

    Focus Areas

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

    Webdesign Weimar is a Weimar, Germany-based web design company. Their services include Web Design and UX/UI Design.

    Read more
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  • Warner Mountain Digital Logotype

    Not yet reviewed

    Undisclosed
    $50 - $99 / hr
    Freelancer
    Portland, OR

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +2
    20% Search Engine Optimization
    20% Web Design

    Focus Areas

    25% JavaScript
    30% HTML5
    25% PHP +1
    20% Other programming & scripting languages

    Warner Mountain Digital, a SEO agency, is headquartered in Portland, Oregon. Their services include Search Engine Optimization and Web Design.

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  • Digital Hive Solutions Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    Freelancer
    Calgary, Canada

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Search Engine Optimization +2
    20% Social Media Marketing
    20% Web Design

    Focus Areas

    25% JavaScript
    25% HTML5
    25% Java +1
    25% Python

    Social media marketing firm Digital Hive Solutions is based in Calgary, Canada. The team provides Social Media Marketing and Search Engine Optimization.

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  • appamass Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    Freelancer
    Las Vegas, NV

    Services provided

    35% Web Development
    35% Mobile App Development
    30% AI Agents

    Focus Areas

    10% JavaScript
    75% Typescript
    10% Python +1
    5% HTML5

    Appamass is a web development firm. Launched in 2021, the agency is located in Las Vegas, Nevada. Their team provides Web Development and Mobile App Development.

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  • PROBOX Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    50% Mobile App Development
    10% AR/VR Development +3
    10% Enterprise App Modernization
    10% IoT Development
    10% Wearable App Development

    Focus Areas

    22% JavaScript
    23% Kotlin
    22% Java +2
    22% Swift
    11% Python

    PROBOX is an application development company launched in 2020. Located in Kyiv, Ukraine, the team specializes in Mobile App Development and Enterprise App Modernization.

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  • Saroma Solutions Private Limited Logotype

    Saroma Solutions Private Limited

    Not yet reviewed

    Undisclosed
    < $25 / hr
    10 - 49

    Services provided

    17% Web Development
    17% Custom Software Development
    10% Web Design +18
    8% Pay Per Click
    6% E-Commerce Development
    6% Ecommerce Marketing
    5% Search Engine Optimization
    5% Social Media Marketing
    2% Affiliate Marketing
    2% Application Management & Support
    2% Application Testing
    2% Content Marketing
    2% Conversion Optimization
    2% Digital Strategy
    2% Graphic Design
    2% Logo
    2% Mobile App Development
    2% Other Application Development
    2% Other Digital Marketing
    2% Out of Home Design
    2% UX/UI Design

    Focus Areas

    15% JavaScript
    45% PHP
    10% SQL +6
    7% Other programming & scripting languages
    5% AJAX
    5% Perl
    5% Python
    4% Java
    4% XML

    Saroma Solutions Private Limited, a software development firm, was launched in 2021. In Jaipur, India, the team focuses on Custom Software Development and Web Development.

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  • TEAM500 Logotype

    TEAM500

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% Blockchain
    25% Mobile App Development +2
    25% Web Design
    10% AR/VR Development

    Focus Areas

    17% JavaScript
    17% Python
    11% Kotlin +8
    11% PHP
    11% Swift
    6% ASP.NET
    6% C#
    6% Ember.js
    6% Go
    6% Typescript
    3% AJAX

    TEAM500 is a web design company. The small Almaty, Kazakhstan-based team offers Web Design and Mobile App Development. The agency was launched in 2001.

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  • Kodeiz Logotype

    Kodeiz

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% E-Commerce Development
    10% AR/VR Development +7
    10% Content Marketing
    10% Custom Software Development
    10% Digital Strategy
    10% Low/No Code Development
    10% Mobile App Development
    10% Web Design
    5% UX/UI Design

    Focus Areas

    22% JavaScript
    22% Python
    22% Swift +4
    11% Kotlin
    11% SQL
    6% ASP.NET
    6% Typescript

    Founded in 2021, Kodeiz is a website development company. The company focuses on Web Development and E-Commerce Development.

    Read more
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  • fyby.io Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% E-Commerce Development
    13% Low/No Code Development +10
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% Email Marketing
    10% UX/UI Design
    5% AI Development
    5% API Development
    5% Affiliate Marketing
    5% Product Design
    1% CRM Consulting and SI
    1% Web Design

    Focus Areas

    22% JavaScript
    28% AJAX
    11% PHP +5
    11% SQL
    10% Kotlin
    6% HTML5
    6% Redux
    6% Swift

    Website development firm fyby.io was founded in 2020. The agency specializes in Web Development and E-Commerce Development.

    Read more
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  • AppGud Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% Branding
    15% Web Design +6
    10% AR/VR Development
    10% Custom Software Development
    10% Graphic Design
    10% Logo
    10% Mobile App Development
    10% UX/UI Design

    Focus Areas

    22% JavaScript
    33% Other programming & scripting languages
    17% Python +4
    11% PHP
    6% Java
    6% Swift
    5% Kotlin

    Founded in 2022, AppGud is a small Gurugram, India-based branding company. Their services include Branding and Web Design.

    Read more
    View Profile
  • Matrixbrains Private Limited Logotype

    Matrixbrains Private Limited

    Not yet reviewed

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

    Services provided

    20% Web Development
    25% AR/VR Development
    20% Mobile App Development +3
    15% Custom Software Development
    10% API Development
    10% Application Testing

    Focus Areas

    12% JavaScript
    18% PHP
    12% Python +7
    12% Redux
    12% SQL
    10% AJAX
    6% HTML5
    6% Typescript
    6% UnrealScript
    6% jquery

    Matrixbrains Private Limited, an AR/VR development company, was launched in 2023. The team focuses on AR/VR development and Web Development.

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

List of the Top 15 JavaScript Development Companies

  1. Brainhub Logotype

    Brainhub

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

    Ability to deliver

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

    Service focus

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

    xfive

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

    Ability to deliver

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

    Service focus

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

    ImageX

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

    Ability to deliver

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

    Service focus

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

    The Software House

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

    Ability to deliver

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

    Service focus

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

    ATEAM SOFT SOLUTIONS

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

    Ability to deliver

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

    Service focus

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

    Airdev

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

    Ability to deliver

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

    Service focus

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

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    Toptal

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

    Ability to deliver

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

    Service focus

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

    Softonix

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

    Ability to deliver

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

    Service focus

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

    INOXOFT

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

    Ability to deliver

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

    Service focus

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

    Lizard Global

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

    Ability to deliver

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

    Service focus

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

    PopArt Studio

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

    Ability to deliver

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

    Service focus

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

    GeekyAnts

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

    Ability to deliver

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

    Service focus

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

    SpdLoad

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

    Ability to deliver

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

    Service focus

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

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

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

    HTMLPanda

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

    Ability to deliver

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

    Service focus

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

    Sigma Software Group

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

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

    Brainium Information Technologies

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

    Ability to deliver

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

    Service focus

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

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

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

    Experion Technologies

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

    Ability to deliver

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

    Service focus

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

    Human Made

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

    Ability to deliver

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

    Service focus

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

    Probey Services

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

    Ability to deliver

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

    Service focus

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

    Blazity

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

    Ability to deliver

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

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

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

    Vincit

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

    Ability to deliver

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

    Service focus

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

    PowerGate Software

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

    Ability to deliver

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

    Service focus

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

    Arcanys

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

    Ability to deliver

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

    Service focus

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

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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