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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 9, 2026
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15 Leaders 15 Contenders

21,638 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • Featured

    What are Featured Providers?

    Digis, a Fiverr company (NYSE: FVRR) Logotype

    Digis, a Fiverr company (NYSE: FVRR)

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

    Services provided

    50% Web Development
    50% Custom Software Development

    Focus Areas

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

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

    See all 88 projects

    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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    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

    Average Project Cost Breakdown

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

    What Clients Have Said

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

    Not yet reviewed

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

    Services provided

    40% Web Development
    20% E-Commerce Development
    17% Application Management & Support +10
    5% CRM Consulting and SI
    2% Content Marketing
    2% Conversion Optimization
    2% Digital Strategy
    2% Email Marketing
    2% IT Managed Services
    2% IT Strategy Consulting
    2% Other Digital Marketing
    2% Social Media Marketing
    2% Web Design

    Focus Areas

    10% JavaScript
    70% PHP
    5% AJAX +3
    5% Ruby
    5% SQL
    5% XML

    Founded in 2018, Cozmot Inc is a small web development company. Their team offers Web Development and E-Commerce Development.

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  • FCS Web Development Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% E-Commerce Development
    10% Branding +10
    10% Custom Software Development
    10% Mobile App Development
    10% Pay Per Click
    5% Content Marketing
    5% Digital Strategy
    5% HR Outsourcing
    5% Logo
    5% Social Media Marketing
    5% UX/UI Design
    5% Web Design

    Focus Areas

    10% JavaScript
    20% jquery
    15% HTML5 +6
    15% PHP
    10% AJAX
    10% SQL
    10% Typescript
    5% Other programming & scripting languages
    5% XML

    Established in 2022, FCS Web Development is a small e-commerce development company headquartered in Porto, Portugal. Their team offers E-Commerce Development and Branding.

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  • Algorithm Logotype

    Algorithm

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% AI Development
    20% AI Agents +3
    20% Mobile App Development
    10% API Development
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    15% Python
    10% Kotlin +9
    10% Other programming & scripting languages
    10% Redux
    10% SQL
    10% Typescript
    5% AJAX
    5% Go
    5% Objective C
    5% PHP
    5% Swift

    Algorithm, an AI development company, is located in Peshawar, Pakistan. Launched in 2022, the team offers Artificial Intelligence and Mobile App Development.

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  • Carich Adotech Logotype

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

    Services provided

    15% Web Development
    10% Social Media Marketing
    10% UX/UI Design +12
    10% Web Design
    5% Affiliate Marketing
    5% Application Testing
    5% Branding
    5% Content Marketing
    5% E-Commerce Development
    5% Email Marketing
    5% Graphic Design
    5% Logo
    5% Mobile App Development
    5% Pay Per Click
    5% Search Engine Optimization

    Focus Areas

    28% JavaScript
    33% PHP
    17% Other programming & scripting languages +2
    11% AJAX
    11% SQL

    Carich Adotech offers comprehensive Website Development services, including professional web solutions tailored to clients' needs. The reviews highlight their expertise, effective communication, and ability to deliver results, such as increased sales. Clients appreciate their experience and innovative approach, noting their helpful nature and unique work system as key strengths.

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  • Amstel Software Logotype

    5.0 2 reviews
    Undisclosed
    $50 - $99 / hr
    2 - 9
    Amstelveen, Netherlands

    Services provided

    20% Web Development
    35% Application Testing
    35% Custom Software Development +1
    10% Web Design

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% C# +7
    10% Go
    10% HTML5
    10% Java
    10% Python
    10% SQL
    10% Visual Basic
    10% jquery

    Amstel Software specializes in Website Development, offering services such as responsive web design, online development, and web programming, particularly through WordPress. Reviews highlight their attention to detail, project management skills, and punctual delivery, making them a highly recommended choice for web development projects.

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  • India App Developer Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +10
    10% Graphic Design
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design
    5% Application Testing
    5% Content Marketing
    5% Logo
    5% Mobile & App Marketing
    5% Other Application Development
    5% Social Media Marketing

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% Kotlin +2
    20% PHP
    20% Swift

    India App Developer is a small Ahmedabad, India-based web design agency. The team offers Web Design and UX/UI Design.

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  • gonzodesign Logotype

    Not yet reviewed

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

    Services provided

    35% Web Development
    30% Web Design
    10% Graphic Design +5
    5% Branding
    5% Logo
    5% Print Design
    5% Search Engine Optimization
    5% UX/UI Design

    Focus Areas

    15% JavaScript
    60% Other programming & scripting languages
    15% PHP +2
    5% AJAX
    5% SQL

    Web development company gonzodesign was launched in 2007. Headquartered in Rijswijk, Netherlands, the team provides Web Development and Web Design.

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  • Apps Imagica LLP Logotype

    5.0 1 review
    $5,000+
    < $25 / hr
    10 - 49
    Gurugram, India

    Services provided

    20% Web Development
    70% Mobile App Development
    10% UX/UI Design

    Focus Areas

    15% JavaScript
    20% Java
    20% Swift +4
    15% PHP
    10% Objective C
    10% Ruby
    10% SQL

    Apps Imagica LLP provides Website Development, Web Design, and app development services, demonstrating high levels of professionalism, technical expertise, and effective communication. Clients commend their ability to deliver tailored, user-friendly digital solutions on schedule, with robust post-launch support. The company is praised for its value for money and dedication to client success.

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  • Block Nerds Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    70% Custom Software Development
    10% Application Testing +2
    5% Blockchain
    5% IoT Development

    Focus Areas

    25% JavaScript
    25% Redux
    15% Go +7
    5% C#
    5% Java
    5% Objective C
    5% PHP
    5% Python
    5% SQL
    5% Swift

    Block Nerds is a Prosper, Texas-based software development firm. The team focuses on Custom Software Development and Application Testing.

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  • Zligger Pte Ltd Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    10 - 49
    Sri Jayawardenepura Kotte, Sri Lanka

    Services provided

    15% Web Development
    45% E-Commerce Development
    25% Mobile App Development +1
    15% Custom Software Development

    Focus Areas

    20% JavaScript
    40% PHP
    20% SQL +1
    20% Swift

    Zligger Pte Ltd, an e-commerce development company, is based in Sri Jayawardenepura Kotte, Sri Lanka and Singapore, Singapore. They focus on E-Commerce Development and Mobile App Development.

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  • DevCottage Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    30% Cybersecurity
    20% Blockchain +3
    15% Custom Software Development
    15% Mobile App Development
    5% CRM Consulting and SI

    Focus Areas

    20% JavaScript
    20% Kotlin
    20% Swift +5
    10% Java
    10% Python
    10% SQL
    5% Go
    5% Typescript

    Based in Kharkiv, Ukraine, DevCottage is a Cybersecurity company. The team focuses on Cybersecurity and Blockchain.

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  • altRecipe Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Blockchain
    20% Mobile App Development +4
    10% Custom Software Development
    10% E-Commerce Development
    5% UX/UI Design
    5% Web Design

    Focus Areas

    10% JavaScript
    10% AJAX
    10% Go +7
    10% Kotlin
    10% Other programming & scripting languages
    10% PHP
    10% Redux
    10% SQL
    10% Swift
    10% Typescript

    AltRecipe, a website development company, was launched in 2015. The team specializes in Web Development and Blockchain.

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  • Visualma Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    50% AR/VR Development
    20% Video Production +2
    10% Advertising
    10% Custom Software Development

    Focus Areas

    33% JavaScript
    22% C++
    22% UnrealScript +2
    12% PHP
    11% Python

    Founded in 2009, Visualma is a small AR/VR development company based in Guadalajara, Mexico. Their team specializes in AR/VR development and Video Production.

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  • Reflect + Refine Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    Freelancer
    Stratford-Upon-Avon, England

    Services provided

    80% Web Development
    20% Web Design

    Focus Areas

    15% JavaScript
    80% HTML5
    5% PHP

    Reflect + Refine, a web development company, was established in 2019. The team specializes in Web Development and Web Design and is located in Stratford-Upon-Avon, England.

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  • Dieutek Developoments Logotype

    Dieutek Developoments

    5.0 3 reviews
    $1,000+
    $25 - $49 / hr
    10 - 49

    Services provided

    25% Web Development
    35% E-Commerce Development
    25% Custom Software Development +1
    15% Mobile App Development

    Focus Areas

    10% JavaScript
    20% PHP
    10% AJAX +6
    10% HTML5
    10% Java
    10% SQL
    10% Typescript
    10% XML
    10% jquery

    Dieutek Developoments specializes in Website Development, offering services such as web design, daily price updates, and analytics integration. Clients have praised their clear communication, responsiveness, and the ability to enhance project scopes. The overall feedback indicates a strong alignment with client needs and effective project management.

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  • Avery Interactive Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% Branding
    15% E-Commerce Development +4
    15% Mobile App Development
    10% Low/No Code Development
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    15% JavaScript
    20% PHP
    20% Python +3
    15% AJAX
    15% Kotlin
    15% SQL

    Branding agency Avery Interactive is based in Kozhikode, India and دبي, United Arab Emirates. Established in 2019, the team offers Branding and Web Design.

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  • Scarfaze Logotype

    Scarfaze

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

    Services provided

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

    Focus Areas

    20% JavaScript
    20% AJAX
    20% Ember.js +2
    20% Kotlin
    20% Swift

    Scarfaze is a full-service IT solutions company providing end-to-end digital development and technical support for businesses worldwide. From website development, mobile app creation, and custom

    Read more
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    $199 Personal sites, small brands, or portfolio pages $399 Business websites, agencies, or startups $599 E-commerce, SaaS, or large-scale organizations

    Scarfaze Wordpress Package

    This plan focuses on fast delivery, professional design, and essential web features at an affordable price.
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  • Software Demand Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

    Web design company Software Demand was founded in 2014. The team offers Web Design and Custom Software Development.

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  • Aliza Solutions LTD Logotype

    Not yet reviewed

    $250,000+
    $100 - $149 / hr
    10 - 49
    Wembley, England

    Services provided

    15% Web Development
    20% API Development
    15% Custom Software Development +6
    14% Low/No Code Development
    10% E-Commerce Development
    10% Graphic Design
    10% Logo
    5% UX/UI Design
    1% Web Design

    Focus Areas

    15% JavaScript
    15% Go
    15% PHP +5
    15% SQL
    15% Typescript
    10% AJAX
    10% HTML5
    5% XML

    Founded in 2012, Aliza Solutions LTD is a custom software development firm. The team focuses on Custom Software Development and API Development.

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  • ATX Web Designs Logotype

    Not yet reviewed

    $10,000+
    $150 - $199 / hr
    2 - 9
    Austin, TX

    Services provided

    30% Web Development
    30% Search Engine Optimization
    30% Web Design +1
    10% Digital Strategy

    Focus Areas

    20% JavaScript
    20% PHP
    20% SQL +4
    10% AJAX
    10% ASP.NET
    10% Apex
    10% Ruby

    ATX Web Designs is a SEO company founded in 2015. The team focuses on Search Engine Optimization and Web Design.

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  • Visual Soldiers Logotype

    Not yet reviewed

    $25,000+
    $150 - $199 / hr
    2 - 9
    Atlanta, GA

    Services provided

    30% Web Development
    30% UX/UI Design
    25% Branding +1
    15% Digital Strategy

    Focus Areas

    20% JavaScript
    50% Other programming & scripting languages
    20% Java +1
    10% SQL

    Visual Soldiers is an Atlanta, Georgia-based user experience design agency. Their services include UX/UI Design and Web Development.

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  • Red Tail Design Company Logotype

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    2 - 9
    Athens, OH

    Services provided

    25% Web Development
    30% Logo
    25% Branding +1
    20% Web Design

    Focus Areas

    25% JavaScript
    30% PHP
    10% Kotlin +6
    10% Python
    5% ColdFusion
    5% Java
    5% Ruby
    5% SQL
    5% XML

    Established in 2016, Red Tail Design Company is a Logo company. The agency specializes in Logo and Branding, and is small.

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  • Endoh Collaborative Logotype

    Not yet reviewed

    $25,000+
    $150 - $199 / hr
    2 - 9
    Montréal, Canada

    Services provided

    30% Web Development
    30% UX/UI Design
    30% Web Design +1
    10% Digital Strategy

    Focus Areas

    20% JavaScript
    70% PHP
    10% AJAX

    Endoh Collaborative is a web design agency based in Montréal, Canada. They provide Web Design and UX/UI Design.

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  • Island Web Design + Creative Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    2 - 9
    Saskatoon, Canada

    Services provided

    30% Web Development
    30% Web Design
    20% Branding +1
    20% Digital Strategy

    Focus Areas

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

    In Saskatoon, Canada, Island Web Design + Creative is a web design agency. Launched in 2011, the team provides Web Design and Web Development.

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  • Dexign Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Web Design
    15% Graphic Design +7
    15% Packaging Design
    10% E-Commerce Development
    10% Print Design
    5% Branding
    5% Logo
    5% Other Design
    5% UX/UI Design

    Focus Areas

    40% JavaScript
    35% PHP
    15% HTML5 +1
    10% Other programming & scripting languages

    Dexign is a web design agency launched in 2006. The small team focuses on Web Design and Graphic Design.

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  • Kreowsky & Kreowsky GbR Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Web Design
    10% E-Commerce Development +4
    10% Graphic Design
    10% Logo
    10% Print Design
    10% UX/UI Design

    Focus Areas

    25% JavaScript
    40% PHP
    25% SQL +1
    10% XML

    Founded in 2008, Kreowsky & Kreowsky GbR is a small web design agency based in Berlin, Germany. Their team provides Web Design and Web Development.

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  • Accrue Performance Marketing Inc. Logotype

    Accrue Performance Marketing Inc.

    Not yet reviewed

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

    Services provided

    30% Web Development
    15% Digital Strategy
    10% Content Marketing +6
    10% Marketing Strategy
    10% Pay Per Click
    10% UX/UI Design
    5% Branding
    5% Business Consulting
    5% Conversion Optimization

    Focus Areas

    20% JavaScript
    40% PHP
    20% XML +2
    10% AJAX
    10% Java

    Accrue Performance Marketing Inc. Is a website development company located in Rimbey, Canada. They provide Web Development and Digital Strategy.

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  • Post Studio Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    2 - 9
    Dublin 1, Ireland

    Services provided

    15% Web Development
    15% Branding
    15% Digital Strategy +4
    15% Low/No Code Development
    15% Packaging Design
    15% UX/UI Design
    10% Web Design

    Focus Areas

    35% JavaScript
    35% PHP
    10% AJAX +2
    10% SQL
    10% Swift

    Post Studio, a website development company, was launched in 2014. They specializes in Web Development and Branding.

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  • Growl Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    15% Mobile App Development
    10% Advertising +5
    10% Digital Strategy
    10% Marketing Strategy
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design

    Focus Areas

    25% JavaScript
    50% PHP
    25% HTML5

    Growl is a web development company launched in 2020. Their team offers Web Development and Mobile App Development.

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  • Toimi Logotype

    5.0 1 review
    $10,000+
    $50 - $99 / hr
    50 - 249
    London, England

    Services provided

    20% Web Development
    20% IT Staff Augmentation
    20% Mobile App Development +2
    20% Product Design
    20% UX/UI Design

    Focus Areas

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

    At Toimi, we craft digital solutions that don’t just meet expectations—they inspire, motivate, and deliver tangible results. With over 8 years of experience and a global portfolio, we combine

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  • Olive Mid East Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% ERP Consulting and SI
    20% Mobile App Development +2
    20% Search Engine Optimization
    20% Web Design

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% Java +2
    20% PHP
    20% XML

    Midsize ERP consulting and SI company Olive Mid East, is located in Dubai, United Arab Emirates and New Delhi, India. The team provides ERP consulting and SI and Mobile App Development.

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  • ClickFred Logotype

    ClickFred

    Not yet reviewed

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

    Services provided

    30% Web Development
    40% E-Commerce Development
    30% Social Media Marketing

    Focus Areas

    50% JavaScript
    50% PHP

    Established in 2015, ClickFred, a small e-commerce development company, is located in West Palm Beach, Florida. Their services include E-Commerce Development and Social Media Marketing.

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  • Right Move Technologies Pvt. Ltd. Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    50 - 249
    Noida, India

    Services provided

    30% Web Development
    30% Custom Software Development
    20% E-Commerce Development +1
    20% Mobile App Development

    Focus Areas

    10% JavaScript
    40% ASP.NET
    30% AJAX +1
    20% XML

    Right Move Technologies Pvt. Ltd. Is a custom software development company founded in 2005. Their team focuses on Custom Software Development and Web Development.

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  • MIXORT sp. z o.o. Logotype

    MIXORT sp. z o.o.

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% Mobile App Development +4
    10% AI Development
    10% Blockchain
    10% E-Commerce Development
    10% Web Design

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% PHP +4
    10% C#
    10% Ember.js
    10% Redux
    10% SQL

    MIXORT sp. Z o.o., a custom software development firm, was launched in 2008. The team focuses on Custom Software Development and Mobile App Development and is based in Warsaw, Poland.

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  • IOTIQ GmbH Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    50 - 249
    Leipzig, Germany

    Services provided

    20% Web Development
    50% Custom Software Development
    20% Mobile App Development +1
    10% IoT Development

    Focus Areas

    20% JavaScript
    20% Java
    20% Python +3
    15% C#
    15% C++
    10% C

    IOTIQ GmbH is a custom software development company. Their team is headquartered in Leipzig, Germany. The agency offers Custom Software Development and Web Development.

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  • Phenologix Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% Robotics Process Automation
    20% Custom Software Development +5
    10% AI Development
    10% IT Managed Services
    10% IT Staff Augmentation
    5% AI Agents
    5% Application Testing

    Focus Areas

    25% JavaScript
    25% Java
    15% Python +5
    10% ASP.NET
    10% PHP
    5% HTML5
    5% Typescript
    5% jquery

    Phenologix is a Robotics Process Automation company. Based in Mississauga, Canada and Austin, Texas, their team specializes in Robotics Process Automation and Custom Software Development.

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  • Nativebyte Softwares LLP Logotype

    Nativebyte Softwares LLP

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% Low/No Code Development
    15% Mobile App Development +9
    10% BI & Big Data Consulting & SI
    10% Custom Software Development
    10% ERP Consulting and SI
    5% AI Development
    5% Cloud Consulting & SI
    5% E-Commerce Development
    5% Generative AI
    5% IT Staff Augmentation
    5% UX/UI Design

    Focus Areas

    30% JavaScript
    20% PHP
    20% Python +4
    10% HTML5
    10% Typescript
    5% Java
    5% Other programming & scripting languages

    Midsize web development company Nativebyte Softwares LLP, is in Noida, India. The team offers Web Development and Custom Software Development.

    Read more
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  • InfinityHub Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% Mobile App Development
    5% Branding +13
    5% Cloud Consulting & SI
    5% Content Marketing
    5% ERP Consulting and SI
    5% Email Marketing
    5% IT Managed Services
    5% IT Strategy Consulting
    5% Logo
    5% Mobile & App Marketing
    5% Pay Per Click
    5% Product Design
    5% Search Engine Optimization
    5% Social Media Marketing
    5% UX/UI Design

    Focus Areas

    25% JavaScript
    25% PHP
    20% Python +3
    20% SQL
    5% Java
    5% Swift

    Midsize website development company InfinityHub, is based in Erode, India and Round Rock, Texas. Their services include Web Development and Mobile App Development.

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  • Mindcom Consulting Services Pvt Ltd Logotype

    Mindcom Consulting Services Pvt Ltd

    Not yet reviewed

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

    Services provided

    30% Web Development
    20% E-Commerce Development
    20% IT Managed Services +3
    10% Custom Software Development
    10% Low/No Code Development
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    40% SQL
    20% Python +3
    10% C#
    10% C++
    10% Java

    Web development firm Mindcom Consulting Services Pvt Ltd offers Web Development and IT managed services. They are headquartered in Bengaluru, India and Columbus, Ohio.

    Read more
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  • PLETHORA IT & HR SOLUTIONS Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile App Development
    20% Pay Per Click +2
    20% Search Engine Optimization
    20% Social Media Marketing

    Focus Areas

    20% JavaScript
    20% AJAX
    20% HTML5 +2
    20% PHP
    20% jquery

    PLETHORA IT & HR SOLUTIONS, a social media marketing firm, is based in Ahmedabad, India. Established in 2018, the team offers Social Media Marketing and Search Engine Optimization.

    Read more
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  • SEO Notch Logotype

    Not yet reviewed

    $25,000+
    $150 - $199 / hr
    50 - 249
    Chicago, IL

    Services provided

    15% Web Development
    45% Search Engine Optimization
    15% Pay Per Click +2
    15% Social Media Marketing
    10% Web Design

    Focus Areas

    25% JavaScript
    15% PHP
    15% SQL +10
    12% HTML5
    5% AJAX
    5% Python
    5% Redux
    5% Typescript
    4% jquery
    3% ASP.NET
    3% Java
    2% Kotlin
    1% Go

    In Chicago, Illinois, SEO Notch is a SEO agency. They provide Search Engine Optimization and Web Development and were launched in 2022.

    Read more
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  • Hashloops Technologies Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% AI Development
    20% Custom Software Development +2
    20% Low/No Code Development
    20% Mobile App Development

    Focus Areas

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

    Hashloops Technologies is a software development company. They provide Custom Software Development and Web Development and were established in 2019. The firm is in Lahore, Pakistan.

    Read more
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  • Cybernative Technologies Pvt. Ltd. Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +2
    20% IT Staff Augmentation
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    20% Other programming & scripting languages
    20% PHP +2
    20% Python
    20% Typescript

    Cybernative Technologies Pvt. Ltd., an IT staff augmentation company, focus on IT staff augmentation and Custom Software Development. They were launched in 2022.

    Read more
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  • Web Design Denver Company Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    50 - 249
    Denver, CO

    Services provided

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

    Focus Areas

    20% JavaScript
    20% HTML5
    20% Kotlin +2
    20% Python
    20% Swift

    Web Design Denver Company is a midsize Email Marketing company. They offer Email Marketing and Search Engine Optimization and were established in 2017.

    Read more
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  • Secuodsoft Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile App Development
    20% Pay Per Click +2
    20% Search Engine Optimization
    20% Social Media Marketing

    Focus Areas

    20% JavaScript
    50% PHP
    10% HTML5 +2
    10% Other programming & scripting languages
    10% SQL

    Launched in 2019, Secuodsoft, a midsize social media marketing firm, is headquartered in Bhubaneswar, India. Their team focuses on Social Media Marketing and Search Engine Optimization.

    Read more
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  • VividMind Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    50% Mobile App Development
    10% Custom Software Development +2
    5% E-Commerce Development
    5% Other Application Development

    Focus Areas

    21% JavaScript
    22% Java
    22% Swift +4
    15% Objective C
    10% AJAX
    5% SQL
    5% XML

    Mobile application development company VividMind was launched in 2010. The small team offers Mobile App Development and Web Development.

    Read more
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  • ardu-digital Logotype

    ardu-digital

    Not yet reviewed

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

    Services provided

    15% Web Development
    10% AI Development
    10% BI & Big Data Consulting & SI +7
    10% E-Commerce Development
    10% Low/No Code Development
    10% Mobile App Development
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design
    5% Ecommerce Marketing

    Focus Areas

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

    Ardu-digital is a small web design company founded in 2018. Their team specializes in Web Design and Web Development.

    Read more
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  • Marketing Giraffes Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% Digital Strategy +7
    10% E-Commerce Development
    10% Market Research
    10% Mobile App Development
    10% Search Engine Optimization
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    25% Other programming & scripting languages
    20% Python +3
    15% PHP
    15% SQL
    5% HTML5

    Marketing Giraffes, a Market Research company, provide Market Research and Digital Strategy. They were launched in 2018.

    Read more
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  • Digital Artflow Logotype

    4.8 17 reviews
    $5,000+
    $50 - $99 / hr
    10 - 49
    București, Romania

    Services provided

    60% Web Development
    20% E-Commerce Development
    10% AR/VR Development +1
    10% UX/UI Design

    Focus Areas

    42% JavaScript
    42% PHP
    11% SQL +1
    5% Other programming & scripting languages

    Digital Artflow is a web development company specializing in custom website development and web application development. Reviews indicate that 100% of clients appreciate their technological expertise, resulting in valuable tools like 3D renderings and web plugins. However, 50% of reviewers suggest improvements in meeting project deadlines. Overall, clients commend their communication and project management skills.

    See all 17 projects
    1 of 2 Web Development reviews are 5 stars
    $10,000 – $49,000 avg. project cost

    Web Development PROJECT HIGHLIGHT

    Custom Web Plugin Dev for Medical Products Manufacturer

    4.0 — A medical products manufacturer hired Digital Artflow to provide custom website plugin development. They developed a system to enable the client to have a complete catalog of their products and Read more
    Read 2 Reviews

    Industry Experience

    Digital Artflow has received positive feedback across various industries, including Design, Construction, IT Services, Manufacturing, Education, and Media. Clients commend their expertise in developing interactive configurators and 3D modeling tools, which enhance customer engagement and lead generation. The overall sentiment is favorable, highlighting their strong communication, project management skills, and ability to meet client needs. Industries such as Construction and Manufacturing have particularly benefited from their innovative solutions, making them a favorable choice for projects requiring custom product configurations.

    Read All Reviews

    Select Industry to see insights

    Design Construction IT Services Manufacturing Education Engineering Media Advertising & marketing

    Average Project Cost Breakdown

    $10,000 to $49,000 (10) Less than $10,000 (3) $50,000 to $199,999 (2)

    What Clients Have Said

    Digital Artflow is frequently recognized for providing good value for money, with clients noting that their pricing fits within budget constraints while delivering high-quality solutions. For instance, one client emphasized their selection of Digital Artflow due to its 'good value for cost,' while another mentioned that the project's budget was managed effectively. Overall, clients express satisfaction with the financial investment relative to the outcomes achieved, although some highlighted delays in project timelines.
    Read All Reviews

    View projects from:

    United States (7) England (3) India (2) Italy (1) New Zealand (1) Switzerland (1)
    View Profile
  • Grandeur Net Logotype

    4.8 3 reviews
    Undisclosed
    Undisclosed
    10 - 49
    Dehradun, India

    Services provided

    15% Web Development
    10% Custom Software Development
    10% Social Media Marketing +11
    10% Video Marketing
    10% Web Design
    5% Content Marketing
    5% Content Writing Services
    5% Digital Strategy
    5% E-Commerce Development
    5% Ecommerce Marketing
    5% Email Marketing
    5% Mobile App Development
    5% Pay Per Click
    5% Search Engine Optimization

    Focus Areas

    20% JavaScript
    30% SQL
    25% PHP +3
    10% HTML5
    10% jquery
    5% Java

    Grandeur Net specializes in Website Development, Web Design, and digital marketing services. Reviews consistently highlight their commitment to customer satisfaction, seamless project management, and ability to deliver visually appealing, user-friendly websites. Clients commend their responsiveness, collaborative nature, and expertise in integrating design with functionality, resulting in improved traffic, engagement, and overall satisfaction.

    See all 3 projects
    View Profile

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We evaluate service providers using a structured methodology that combines:

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

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Ability to deliver
Focus
Clutch Leaders Matrix

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

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

List of the Top 15 JavaScript Development Companies

  1. xfive Logotype

    xfive

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

    Ability to deliver

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

    Service focus

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

    ImageX

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

    Ability to deliver

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

    Service focus

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

    Brainhub

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

    Ability to deliver

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

    Service focus

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

    The Software House

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

    Ability to deliver

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

    Service focus

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

    ATEAM SOFT SOLUTIONS

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

    Ability to deliver

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

    Service focus

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

    Airdev

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

    Ability to deliver

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

    Service focus

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

    Xmartlabs

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

    Ability to deliver

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

    Service focus

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

    Softonix

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

    Ability to deliver

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

    Service focus

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

    Toptal

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

    Ability to deliver

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

    Service focus

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

    Lizard Global

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

    Ability to deliver

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

    Service focus

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

    INOXOFT

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

    Ability to deliver

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

    Service focus

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

    PopArt Studio

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

    Ability to deliver

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

    Service focus

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

    GeekyAnts

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

    Ability to deliver

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

    Service focus

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

    SpdLoad

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

    Ability to deliver

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

    Service focus

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

    Brainium Information Technologies

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

    Ability to deliver

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

    Service focus

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

    HTMLPanda

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

    Ability to deliver

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

    Service focus

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

    Sigma Software Group

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

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

    Service focus

    40% Web Development
    50% JavaScript
    60% Other
    View Profile Visit Website
  20. Techuz InfoWeb Pvt. Ltd. Logotype

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  21. WPWeb Infotech Logotype

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

    65% Web Development
    20% JavaScript
    35% Other
    View Profile Visit Website
  22. Human Made Logotype

    Human Made

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

    Ability to deliver

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

    Service focus

    100% Web Development
    30% JavaScript
    View Profile Visit Website
  23. Arcanys Logotype

    Arcanys

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

    Ability to deliver

    38.7/40.0
    20/20 Reviews
    10/10 Clients & Experience
    8.7/10 Market Presence

    Service focus

    30% Web Development
    20% JavaScript
    70% Other
    View Profile Visit Website
  24. Experion Technologies Logotype

    Experion Technologies

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

    Ability to deliver

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

    Service focus

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

    Cleveroad

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

    Ability to deliver

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

    Service focus

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

    Blazity

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

    Ability to deliver

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

    Service focus

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

    XWP

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

    Ability to deliver

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

    Service focus

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

    Probey Services

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

    Ability to deliver

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

    Service focus

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

    Vincit

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

    Ability to deliver

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

    Service focus

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

    Oshyn

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

    Ability to deliver

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

    Service focus

    100% Web Development
    40% JavaScript
    View Profile Visit Website

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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