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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

21,640 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

    Reviews mention Collaborative

    The reviews convey a highly positive sentiment regarding collaboration with Digis. Clients noted the seamless integration of Digis' engineers into their teams, exemplified by daily stand-ups and agile methodologies, fostering real-time communication and responsiveness. One client highlighted their proactive approach in addressing ambiguities and adapting to shifting priorities. Another emphasized the ease of communication and support from project managers and developers. Overall, clients felt that Digis operated as an integral part of their teams, enhancing productivity and project outcomes.
    • Mobile App Dev & UI/UX Design for FinTech Startup
      5.0 Jul 24, 2020

      It’s comfortable working together, and we’re quite satisfied. Their team has good communication skills and sticks to the timeline. They’re responsive and listen to our feedback. It’s a very positive experience compared to what I’ve experienced with other technical teams regarding communication, collaboration, and timelines.

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    • Development Staff Augmentation for Online Cooking Platform
      5.0 Dec 18, 2025

      The project management was highly effective and collaborative. Rather than requiring external oversight, their engineers fully adopted our internal Agile/Scrum methodologies. They synced daily with our project management team, ensuring that expectations were aligned and blockers were addressed in real-time.

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    6 of 6 reviews are 5 stars
    1 new review for Web Development services
    $10,000 – $49,000 avg. project cost

    Reviewed 6 times in the past 6 months

    Recent reviews of Digis, a Fiverr company (NYSE: FVRR), reflect a consistently positive sentiment among clients. Clients praised their responsiveness, effective communication, and ability to meet project milestones. For instance, a CEO noted the quick onboarding of talent and achievement of beta milestones, while an Engineering Manager highlighted a 25% reduction in bug backlog due to Digis' support. Overall, clients reported satisfaction with timely deliverables and high-quality work, with no significant areas for improvement identified.
    Read 6 Recent Reviews
    16 of 22 Web Development reviews are 5 stars
    1 new review for Web Development in past 6 months
    $50,000 – $199,999 avg. project cost

    Web Development PROJECT HIGHLIGHT

    Hosting Platform Development for Advertising & Marketing Co

    4.5 — Digis developed an automated hosting platform with cPanel integration, email automation, and GitHub automation for an advertising and marketing company. Read more
    Read 22 Reviews

    Average Project Cost Breakdown

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

    What Clients Have Said

    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.
    Read All Reviews
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  • Rollin Logotype

    Rollin

    Not yet reviewed

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

    Services provided

    30% Web Development
    15% E-Commerce Development
    15% Mobile App Development +6
    10% API Development
    10% Low/No Code Development
    5% AI Development
    5% DevOps Managed Services
    5% Digital Strategy
    5% Email Marketing

    Focus Areas

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

    Launched in 2010, Rollin is a web development firm. Located in Québec, Canada, the team offers Web Development and Mobile App Development.

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  • JCaspTechnologies Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% API Development
    20% Mobile App Development +4
    15% Microservices Architecture Services
    10% Custom Software Development
    10% E-Commerce Development
    5% AI Development

    Focus Areas

    30% JavaScript
    30% Python
    15% Ruby +3
    10% AJAX
    10% PHP
    5% Typescript

    Established in 2010, JCaspTechnologies is a website development firm. The team focuses on Web Development and Mobile App Development and is located in Ahmedabad, India.

    Read more
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  • Feseur Logotype

    Feseur

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    30% JavaScript
    50% PHP
    20% Kotlin

    Established in 2011, Feseur is an user experience agency. The team provides UX/UI Design and Product Design.

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  • Simple Solutionz LLC Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Graphic Design
    20% Mobile App Development +3
    20% Search Engine Optimization
    20% Social Media Marketing
    10% Low/No Code Development

    Focus Areas

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

    Simple Solutionz LLC, a social media marketing agency, was founded in 2021. The team specializes in Social Media Marketing and Search Engine Optimization and is based in Ashburn, Virginia.

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  • Pixcels Themes Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    10 - 49
    Surat, India

    Services provided

    30% Web Development
    20% AI Development
    20% Blockchain +2
    20% Mobile App Development
    10% API Development

    Focus Areas

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

    Founded in 2024, Pixcels Themes is a small website development company located in Surat, India. Their team specializes in Web Development and Mobile App Development.

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  • Eron Techno Solutions Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Cloud Consulting & SI
    20% Enterprise App Modernization +2
    20% Graphic Design
    20% Mobile App Development

    Focus Areas

    30% JavaScript
    35% HTML5
    35% PHP

    Based in Siranandha Puram, India, Eron Techno Solutions Pvt Ltd is a graphic design agency. Established in 2012, the team specializes in Graphic Design and cloud consulting & SI.

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  • Inspite Technologies Logotype

    Not yet reviewed

    $75,000+
    $100 - $149 / hr
    10 - 49
    Kochi, India

    Services provided

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

    Focus Areas

    30% JavaScript
    35% PHP
    35% Python

    Founded in 2010, Inspite Technologies, a small social media marketing company, is headquartered in Kochi, India. Their services include Social Media Marketing and Search Engine Optimization.

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  • Eeat minds Logotype

    Eeat minds

    Not yet reviewed

    Undisclosed
    < $25 / hr
    10 - 49

    Services provided

    25% Web Development
    25% Pay Per Click
    25% Search Engine Optimization +1
    25% Social Media Marketing

    Focus Areas

    25% JavaScript
    25% HTML5
    25% Java +1
    25% PHP

    Eeat minds, a social media marketing firm, is headquartered in Bengaluru, India. They focus on Social Media Marketing and Search Engine Optimization and were established in 2022.

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  • OneGreenDiary Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% API Development
    20% E-Commerce Development +2
    20% ERP Consulting and SI
    20% Mobile App Development

    Focus Areas

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

    Founded in 2015, OneGreenDiary is a small ERP consulting and SI company. Their team focuses on ERP consulting and SI and Web Development.

    Read more
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  • The Winhouse (Winhouse.) Logotype

    The Winhouse (Winhouse.)

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Application Testing
    20% IT Managed Services +2
    20% UX/UI Design
    20% Web Design

    Focus Areas

    30% JavaScript
    35% HTML5
    35% PHP

    The Winhouse (Winhouse.), a web design company, was founded in 2018. The team provides Web Design and UX/UI Design and is in Ho Chi Minh City, Vietnam.

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  • TRIM Logotype

    Not yet reviewed

    $50,000+
    $150 - $199 / hr
    10 - 49
    Fort Lauderdale, FL

    Services provided

    10% Web Development
    40% Custom Software Development
    40% Mobile App Development +1
    10% AR/VR Development

    Focus Areas

    20% JavaScript
    40% Ruby
    20% Java +1
    20% Swift

    Founded in 2014, TRIM is a software development company. Headquartered in Fort Lauderdale, Florida and Nashville, Tennessee, the team provides Custom Software Development and Mobile App Development.

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  • ProBeta Studio Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    60% E-Commerce Development
    10% Low/No Code Development +1
    10% Web Design

    Focus Areas

    20% JavaScript
    40% PHP
    25% Python +1
    15% jquery

    ProBeta Studio is an e-commerce development firm. The company is headquartered in Mumbai, India. Their services include E-Commerce Development and Web Development.

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  • Thunder Web Lab Website Design And Development Logotype

    Thunder Web Lab Website Design And Development

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Web Design
    15% E-Commerce Development +5
    10% Low/No Code Development
    10% UX/UI Design
    5% Custom Software Development
    5% Graphic Design
    5% Search Engine Optimization

    Focus Areas

    15% JavaScript
    30% HTML5
    25% PHP +2
    15% Java
    15% XML

    Thunder Web Lab Website Design And Development is a small web design company based in Rajshahi, Bangladesh and Los Angeles, California. The team focuses on Web Design and Web Development.

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  • Sublime Technocorp Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Mobile App Development
    10% AI Development +4
    10% API Development
    10% Application Management & Support
    10% Custom Software Development
    10% DevOps Managed Services

    Focus Areas

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

    Sublime Technocorp Pvt Ltd is a web development firm in Navi Mumbai, India and Sohar, Oman. The team specializes in Web Development and Mobile App Development.

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  • Pro-TEAM Solutions Pvt. Ltd. Logotype

    5.0 1 review
    $1,000+
    $25 - $49 / hr
    50 - 249
    Bengaluru, India

    Services provided

    10% Web Development
    15% E-Commerce Development
    13% Low/No Code Development +10
    10% API Development
    10% Custom Software Development
    10% Other Application Development
    10% Wearable App Development
    5% Logo
    5% Packaging Design
    5% Print Design
    5% UX/UI Design
    1% Mobile App Development
    1% Web Design

    Focus Areas

    10% JavaScript
    25% Kotlin
    25% PHP +4
    10% AJAX
    10% HTML5
    10% SQL
    10% jquery

    Pro-TEAM Solutions Pvt. Ltd. specializes in UI/UX design services for eCommerce websites and applications. Reviews highlight their exceptional project management, timely delivery, and focus on user-centered design, with an impressive integration of user feedback and data-driven insights that enhance the overall user experience. Their services are praised for their deep understanding of client needs and highly functional and visually appealing outcomes.

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  • IT ETHIOPIA Logotype

    Not yet reviewed

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

    Services provided

    35% Web Development
    25% E-Commerce Development
    20% Mobile App Development +2
    10% Low/No Code Development
    10% Search Engine Optimization

    Focus Areas

    10% JavaScript
    15% PHP
    15% Python +5
    15% SQL
    15% Visual Basic
    10% AJAX
    10% Kotlin
    10% Redux

    Based in Addis Ababa, Ethiopia, IT ETHIOPIA is a website development company. The team provides Web Development and E-Commerce Development.

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  • Ottawa Web Genius Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    25% Search Engine Optimization
    20% Web Design +2
    15% E-Commerce Development
    10% Low/No Code Development

    Focus Areas

    15% JavaScript
    20% C++
    20% HTML5 +3
    15% PHP
    15% Python
    15% SQL

    Ottawa Web Genius, a web design agency, provides Web Design and Web Development. The agency is based in Ottawa, Canada.

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  • VitalClick Technologies Logotype

    4.0 1 review
    Undisclosed
    < $25 / hr
    10 - 49
    Randburg, South Africa

    Services provided

    20% Web Development
    20% Application Management & Support
    20% Custom Software Development +2
    20% E-Commerce Development
    20% Mobile App Development

    Focus Areas

    33% JavaScript
    34% HTML5
    33% PHP

    VitalClick Technologies specializes in implementing robust, scalable platforms for seamless remote work transitions, focusing on cloud-based infrastructure, collaboration tools, and enhanced security measures. Reviews highlight their exemplary project management, client-centric approach, and commitment to long-term value, resulting in zero downtime, increased productivity, and high employee satisfaction. Clients appreciate their technical expertise and flexibility but suggest enhancements in proactive communication and support documentation.

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  • Ryientsoft Technologies Pvt Ltd Logotype

    Ryientsoft Technologies Pvt Ltd

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% BI & Big Data Consulting & SI
    20% Blockchain +2
    20% Branding
    20% Mobile App Development

    Focus Areas

    33% JavaScript
    34% Java
    33% Python

    Ryientsoft Technologies Pvt Ltd is a branding company launched in 2019. Their services include Branding and BI & big data consulting & SI.

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  • Workhu Logotype

    Workhu

    5.0 1 review
    $1,000+
    $100 - $149 / hr
    10 - 49

    Services provided

    10% Web Development
    20% Logo
    15% Branding +6
    15% Graphic Design
    10% Print Design
    10% UX/UI Design
    10% Web Design
    5% Packaging Design
    5% Product Design

    Focus Areas

    15% JavaScript
    25% Ruby
    20% HTML5 +3
    20% Java
    15% C++
    5% PHP

    Workhu offers complex database development with API interfaces and professional web development services. Client feedback highlights their expertise, professionalism, and effective project management. Overall, clients are impressed with Workhu's ability to deliver high-quality results and integrate complex ideas into final products.

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  • TechupR Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% AI Development
    10% API Development +9
    10% Custom Software Development
    10% DevOps Managed Services
    10% Enterprise App Modernization
    10% Mobile App Development
    10% UX/UI Design
    5% AI Agents
    5% Blockchain
    5% IT Staff Augmentation
    5% IT Strategy Consulting

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% HTML5 +7
    10% Java
    10% Objective C
    10% PHP
    10% Python
    10% Swift
    10% Typescript
    10% jquery

    TechupR is an Ahmedabad, India-based UX design company. They focus on UX/UI Design and Custom Software Development.

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  • Greenti Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    70% Mobile App Development
    15% Custom Software Development +1
    5% UX/UI Design

    Focus Areas

    10% JavaScript
    20% Kotlin
    20% Redux +6
    15% SQL
    10% HTML5
    10% Java
    5% Objective C
    5% Visual Basic
    5% jquery

    Founded in 2022, Greenti is a mobile application development company. The team offers Mobile App Development and Custom Software Development.

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  • Digimark - Digital Marketing Logotype

    Not yet reviewed

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

    Services provided

    14% Web Development
    16% Social Media Marketing
    14% Mobile App Development +4
    14% Other Digital Marketing
    14% Pay Per Click
    14% Search Engine Optimization
    14% Web Design

    Focus Areas

    16% JavaScript
    20% PHP
    16% C++ +3
    16% Java
    16% Python
    16% SQL

    Digimark - Digital Marketing, a social media marketing agency, was founded in 2019. The team focuses on Social Media Marketing and Mobile App Development.

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  • iBrain Developers Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9
    Hyderabad, India

    Services provided

    10% Web Development
    40% Corporate Training & Coaching
    10% Custom Software Development +4
    10% Graphic Design
    10% Logo
    10% Product Design
    10% Web Design

    Focus Areas

    20% JavaScript
    20% Python
    15% PHP +5
    15% SQL
    10% AJAX
    10% Java
    5% C
    5% C++

    IBrain Developers is a small Corporate Training & Coaching company founded in 2017. Their services include Corporate Training & Coaching and Web Design.

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  • iCRATS Technologies Logotype

    5.0 1 review
    $1,000+
    < $25 / hr
    50 - 249
    Kochi, India

    Services provided

    20% Web Development
    20% BI & Big Data Consulting & SI
    20% Custom Software Development +2
    20% ECM Consulting and SI
    20% Enterprise App Modernization

    Focus Areas

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

    iCRATS Technologies specializes in cloud migration services, including transitioning from on-premises servers to Office 365. Client reviews highlight their proficiency in project management, effective communication, and smooth migration processes. Overall, clients appreciate their transparent, user-friendly approach and strong client relations, making them a trusted technical partner.

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  • Savage Design Company Logotype

    Savage Design Company

    Not yet reviewed

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

    Services provided

    20% Web Development
    50% Web Design
    20% Search Engine Optimization +1
    10% Low/No Code Development

    Focus Areas

    20% JavaScript
    70% PHP
    10% HTML5

    Savage Design Company is a web design agency. The company is based in Limerick, Maine. Their services include Web Design and Search Engine Optimization.

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  • Alfobit Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    19% Low/No Code Development
    15% Pay Per Click +13
    10% Custom Software Development
    5% Affiliate Marketing
    5% E-Commerce Development
    5% Mobile & App Marketing
    5% Mobile App Development
    5% Social Media Marketing
    5% UX/UI Design
    2% Email Marketing
    2% Graphic Design
    2% Other Application Development
    2% Product Design
    2% Search Engine Optimization
    1% Web Design

    Focus Areas

    43% JavaScript
    16% Redux
    11% Python +6
    5% AJAX
    5% PHP
    5% SQL
    5% Swift
    5% Typescript
    5% XML

    Alfobit is a website development company established in 2016. Their team provides Web Development and Pay Per Click.

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  • SEO Results Pro Logotype

    SEO Results Pro

    2.8 2 reviews
    Undisclosed
    Undisclosed
    10 - 49

    Services provided

    15% Web Development
    40% Search Engine Optimization
    15% Web Design +3
    10% Ecommerce Marketing
    10% Low/No Code Development
    10% UX/UI Design

    Focus Areas

    15% JavaScript
    20% C++
    20% PHP +3
    20% Python
    15% SQL
    10% AJAX

    SEO Results Pro is an SEO agency that claims to offer comprehensive digital marketing services, including content creation and backlink generation. However, the reviews reveal a significant dissatisfaction, with the client reporting a failure to deliver on promised services such as articles, blogs, and press releases, resulting in a chargeback situation. Feedback indicates poor communication and unmet expectations, suggesting potential clients exercise caution.

    See all 2 projects

    Industry Experience

    SEO Results Pro has experience primarily in the Utilities industry, focusing on enhancing online visibility and customer acquisition. Feedback indicates strengths in SEO optimization and website performance improvement, but notable weaknesses in communication and content delivery. Clients reported dissatisfaction with unmet content promises and project management issues. Overall sentiment suggests potential clients in the Utilities sector may proceed with caution, while those prioritizing clear communication and timely delivery may want to consider other options.

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    Select Industry to see insights

    Utilities

    Average Project Cost Breakdown

    Less than $10,000 (1)

    What Clients Have Said

    Clients express significant dissatisfaction with SEO Results Pro regarding cost and value for money. One reviewer highlighted their initial hesitance to invest nearly $2,500, ultimately feeling that promised deliverables, such as articles and blogs, were largely unfulfilled. Despite the owner's assurances and a money-back guarantee, clients reported poor communication and inadequate service, leading to frustrations over unmet expectations and the need for chargebacks.
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  • Futurex Tech Logotype

    Futurex Tech

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

    Services provided

    10% Web Development
    20% Social Media Marketing
    10% E-Commerce Development +6
    10% Graphic Design
    10% Low/No Code Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design

    Focus Areas

    30% JavaScript
    15% Java
    15% Ruby +5
    15% jquery
    10% PHP
    5% HTML5
    5% Typescript
    5% XML

    Your Digital Innovation PartnerFuturex Tech is a top agency based in Birgunj and Kathmandu. We specialize in Web Design (UI/UX), Branding, Graphic Design, Digital Marketing and Website Development.

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  • Tag1 Consulting, Inc. Logotype

    Not yet reviewed

    $5,000+
    $200 - $300 / hr
    10 - 49
    Portland, OR

    Services provided

    30% Web Development
    10% Application Management & Support
    10% Cloud Consulting & SI +6
    10% Cybersecurity
    10% IT Managed Services
    10% Other IT Consulting and SI
    10% UX/UI Design
    5% Custom Software Development
    5% E-Commerce Development

    Focus Areas

    10% JavaScript
    50% PHP
    15% SQL +7
    10% AJAX
    10% Python
    1% C
    1% Java
    1% Perl
    1% Ruby
    1% XML

    Tag1 Consulting, Inc. Is a St. Petersburg, Florida-based website development company. They focus on Web Development and UX/UI Design.

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  • Mindcorn Technology Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +9
    10% Graphic Design
    10% Mobile App Development
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design
    5% Affiliate Marketing
    5% IoT Development
    5% Pay Per Click
    5% Social Media Marketing

    Focus Areas

    10% JavaScript
    15% Other programming & scripting languages
    10% AJAX +8
    10% Kotlin
    10% PHP
    10% Swift
    10% Typescript
    10% jquery
    5% ASP.NET
    5% HTML5
    5% Java

    In Greater Noida, India, Mindcorn Technology Pvt Ltd is a SEO company. The team provides Search Engine Optimization and Web Design.

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  • The Hashtag Digital Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    11% JavaScript
    12% AJAX
    11% PHP +6
    11% Python
    11% Redux
    11% Ruby
    11% SQL
    11% Swift
    11% Visual Basic

    The Hashtag Digital is an e-commerce development company. Launched in 2019, the company is based in Karachi, Pakistan. Their team offers E-Commerce Development and Mobile App Development.

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  • Webista Infotech Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    20% Search Engine Optimization
    20% Web Design +3
    10% Branding
    10% Digital Strategy
    10% Mobile App Development

    Focus Areas

    30% JavaScript
    30% PHP
    10% AJAX +3
    10% Python
    10% SQL
    10% Visual Basic

    Webista Infotech Pvt Ltd, a website development firm, was founded in 2022. The team offers Web Development and Search Engine Optimization and is in Jashpur Nagar, India.

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  • Creativo code Logotype

    Not yet reviewed

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

    Services provided

    35% Web Development
    15% UX/UI Design
    10% E-Commerce Development +4
    10% Graphic Design
    10% Low/No Code Development
    10% Mobile App Development
    10% Other Design

    Focus Areas

    25% JavaScript
    15% Typescript
    10% PHP +9
    10% SQL
    5% AJAX
    5% ASP.NET
    5% Go
    5% HTML5
    5% Python
    5% Ruby
    5% XML
    5% jquery

    Creativo code is a website development company. Established in 2022, the firm is in Colombo, Sri Lanka. Their team specializes in Web Development and UX/UI Design.

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  • Weezli Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Bayrut, Lebanon

    Services provided

    10% Web Development
    30% AI Consulting
    30% AI Development +3
    10% Business Consulting
    10% E-Commerce Development
    10% Low/No Code Development

    Focus Areas

    50% JavaScript
    25% Python
    15% C++ +1
    10% HTML5

    Weezli is a Bayrut, Lebanon-based AI company. Their services include Artificial Intelligence and AI Consulting.

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  • MetaXols Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    40% JavaScript
    30% Ember.js
    20% Redux +1
    10% Typescript

    MetaXols is a custom software development firm. They are headquartered in Lahore, Pakistan and have small team. They specialize in Custom Software Development and Web Development.

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  • Pixout Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    30% IoT Development
    20% Application Testing +2
    10% Application Management & Support
    10% Custom Software Development

    Focus Areas

    25% JavaScript
    30% C++
    25% Go +3
    10% PHP
    5% Other programming & scripting languages
    5% SQL

    Pixout, an IoT development company, was founded in 2013. They specializes in IoT development and Web Development.

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  • WeMyIT Canada Corp. Logotype

    WeMyIT Canada Corp.

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

    Services provided

    60% Web Development
    40% Custom Software Development

    Focus Areas

    20% JavaScript
    50% Python
    20% Typescript +1
    10% Other programming & scripting languages

     It is important for us to: - Keep our commitments and promises. - Proactively and efficiently perform the work that you have undertaken. - Do not work on projects that violate our moral

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  • Hashed System FZCO Logotype

    Not yet reviewed

    $5,000+
    $150 - $199 / hr
    2 - 9
    Dubai, United Arab Emirates

    Services provided

    10% Web Development
    20% Custom Software Development
    20% E-Commerce Development +6
    20% Mobile App Development
    10% Web Design
    5% Graphic Design
    5% Logo
    5% Product Design
    5% UX/UI Design

    Focus Areas

    10% JavaScript
    50% Python
    30% PHP +1
    10% AJAX

    Custom software development company Hashed System FZCO was launched in 2020. Located in Dubai, United Arab Emirates, the team focuses on Custom Software Development and Mobile App Development.

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  • ShahWPDeveloper Logotype

    ShahWPDeveloper

    Not yet reviewed

    Undisclosed
    < $25 / hr
    Freelancer

    Services provided

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

    Focus Areas

    35% JavaScript
    40% PHP
    10% SQL +2
    10% jquery
    5% HTML5

    ShahWPDeveloper is a small Islamabad, Pakistan-based web design company. The team offers Web Design and UX/UI Design.

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  • SJ Studios Logotype

    Not yet reviewed

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

    Services provided

    30% Web Development
    20% Application Testing
    20% Custom Software Development +3
    15% UX/UI Design
    10% Business Consulting
    5% Application Management & Support

    Focus Areas

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

    SJ Studios is a website development company launched in 2021. The firm provides Web Development and Custom Software Development.

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  • Vimana Digital Logotype

    Not yet reviewed

    $1,000+
    Undisclosed
    2 - 9
    Long Eaton, England

    Services provided

    20% Web Development
    20% Search Engine Optimization
    10% E-Commerce Development +8
    10% Low/No Code Development
    10% Web Design
    5% Content Writing Services
    5% Digital Strategy
    5% Mobile App Development
    5% Pay Per Click
    5% Social Media Marketing
    5% UX/UI Design

    Focus Areas

    20% JavaScript
    20% Python
    20% Swift +6
    10% AJAX
    10% HTML5
    5% Java
    5% Ruby
    5% SQL
    5% jquery

    Small SEO company Vimana Digital, is based in Long Eaton, England. The team offers Search Engine Optimization and Web Design.

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  • Marian Marton Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    40% UX/UI Design
    20% Web Design +3
    10% IT Managed Services
    10% Low/No Code Development
    5% E-Commerce Development

    Focus Areas

    15% JavaScript
    70% HTML5
    15% jquery

    Marian Marton, an user experience design agency, is based in Sedaví, Spain. They focus on UX/UI Design and Web Design and were established in 2021.

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  • infinzi Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    45% Accounting
    15% Business Consulting +5
    10% Digital Strategy
    4% HR Consulting
    4% HR Outsourcing
    4% Recruiting
    3% Staffing

    Focus Areas

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

    Headquartered in Mumbai, India, infinzi is an Accounting company. Their services include Accounting and Web Development.

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  • Playful Sparkle Logotype

    Not yet reviewed

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

    Services provided

    35% Web Development
    25% Web Design
    20% Other Digital Marketing +1
    20% Search Engine Optimization

    Focus Areas

    15% JavaScript
    20% AJAX
    20% PHP +3
    15% C#
    15% HTML5
    15% Python

    Playful Sparkle is a web development company located in Dolinka, Slovakia. Their services include Web Development and Web Design.

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  • MOMCILOVIC Logotype

    Not yet reviewed

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

    Services provided

    80% Web Development
    20% Web Design

    Focus Areas

    10% JavaScript
    70% PHP
    10% AJAX +1
    10% SQL

    MOMCILOVIC, a website development firm, is located in Vranje, Serbia. Their services include Web Development and Web Design.

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  • Alliance Web Solution Pvt. Ltd. Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    20% Search Engine Optimization
    15% Web Design +6
    10% E-Commerce Development
    10% Mobile App Development
    10% Pay Per Click
    10% UX/UI Design
    5% Mobile & App Marketing
    5% Social Media Marketing

    Focus Areas

    20% JavaScript
    50% PHP
    10% Ember.js +2
    10% Ruby
    10% SQL

    Launched in 2003, Alliance Web Solution Pvt. Ltd. Is a midsize SEO services firm. Their team specializes in Search Engine Optimization and Web Design.

    Read more
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  • SWA IT AG Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    10 - 49
    Alberswil, Switzerland

    Services provided

    10% Web Development
    30% IT Staff Augmentation
    20% Custom Software Development +4
    15% IT Managed Services
    10% CRM Consulting and SI
    10% ERP Consulting and SI
    5% Mobile App Development

    Focus Areas

    10% JavaScript
    25% Other programming & scripting languages
    10% ColdFusion +10
    10% PHP
    5% ASP
    5% ASP.NET
    5% C
    5% C#
    5% C++
    5% Java
    5% Python
    5% SQL
    5% XML

    SWA IT AG is an IT staff augmentation company. They were founded in 2017 and focus on IT staff augmentation and Custom Software Development.

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  • MB Web Agency Logotype

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

    Services provided

    20% Web Development
    20% Audio Production
    20% Ecommerce Marketing +3
    20% Graphic Design
    10% Low/No Code Development
    10% Web Design

    Focus Areas

    35% JavaScript
    40% PHP
    25% SQL

    MatteoBodi.it is a web agency based in Venice, Italy, specializing in professional website development. They offer customized web design, SEO optimization, e-commerce solutions, and digital

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  • Net 'n' Design Logotype

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

    Services provided

    15% Web Development
    15% E-Commerce Development
    15% Web Design +9
    10% Search Engine Optimization
    10% Social Media Marketing
    5% Digital Strategy
    5% Email Marketing
    5% Graphic Design
    5% IT Managed Services
    5% Logo
    5% Packaging Design
    5% Print Design

    Focus Areas

    40% JavaScript
    50% PHP
    10% Python

    Net 'n' Design specializes in Website Development and Web Design, providing expert services in creating and programming online platforms. Client reviews highlight their professionalism, dedication, and ability to handle complex Web Development challenges with seamless functionality and timely execution, making them a highly recommended choice for web programming projects.

    See all 1 projects
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Why Trust Clutch

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

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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
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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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