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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: May 19, 2026
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15 Leaders 15 Contenders

22,063 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 89 reviews
    Premier Verified
    $5,000+
    $25 - $49 / hr
    50 - 249
    London, England

    Services provided

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

    Focus Areas

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

    Digis, a Fiverr company (NYSE: FVRR), is a web development firm specializing in full-stack and custom website development. Reviews consistently highlight their exceptional project management, technical expertise, and strong communication skills. Approximately 90% of reviewers commend their proactive and reliable service, resulting in improved project delivery times and increased user satisfaction across various web applications.

    See all 89 projects

    Reviews mention Proactive

    The sentiment surrounding Digis reflects a strong proactive approach, with clients frequently praising their responsiveness and initiative. For instance, one client highlighted their engineers' ability to address ambiguous requirements proactively, while another noted their commitment to effective communication and quick adaptation to changing priorities. Overall, clients found Digis to be a reliable partner, often emphasizing their seamless integration into existing teams and their proactive problem-solving capabilities, contributing significantly to project success.
    • Custom Software Development for Live Entertainment Platform
      5.0 Oct 8, 2024

      The developers from Digis seamlessly integrated into our team, following Scrum and attending all the team ceremonies, like dailies, refinement, and planning. Overall they delivered on time. Speed is good, and proactivity is high.

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    • IT Staff Aug & Software Dev for EdTech Company
      5.0 Apr 19, 2024

      Our teammate from Digis is incredibly valuable and from day one we have considered him a member of our team. We are incredibly impressed with the quality of work and have really appreciated how proactive Digis is.

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    • Backend Dev & Data Science for Tech-Driven Healthcare Co
      5.0 Jul 18, 2023

      Throughout the project, the company demonstrated a proactive approach to addressing our requirements and ensuring that our needs were met. They actively engaged with us to understand our specific needs, priorities, and challenges.

      Read Full Review
    • IT Consulting & Dev for Software Company
      5.0 Jan 21, 2020

      With that being said, DIGIS people are very proactive: if they see something undesirable or nonstandard, they will not wait until the next meeting/telecon with you, they will let you know about it immediately and even start resolving the issue.

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    • React Native Dev for Employee Engagement App
      5.0 Apr 8, 2019

      Their workflow was good. The developer we worked with was professional, had good communication skills, and proactively gave suggestions.

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    Read All Reviews
    17 of 23 Web Development reviews are 5 stars
    2 new reviews 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 23 Reviews

    Average Project Cost Breakdown

    $10,000 to $49,000 (25) $50,000 to $199,999 (16) Less than $10,000 (8) $200,000 to $999,999 (6) $1,000,000 to $9,999,999 (4)

    What Clients Have Said

    Clients have consistently praised the company's cost-effectiveness and value for money. Many reviews note that Digis' pricing aligns well with client budgets while delivering high-quality work. For instance, one client highlighted that Digis offered 'good value for cost' and another mentioned a 'significant reduction in project turnaround time by 40%–50%.' Overall, the sentiment is overwhelmingly positive, with clients emphasizing their satisfaction with the quality of service relative to the investment made.
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    View projects from:

    United States (29) 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)
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  • Vlas Zubenko Logotype

    Vlas Zubenko

    Not yet reviewed

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

    Services provided

    55% Web Development
    30% UX/UI Design
    15% Mobile App Development

    Focus Areas

    35% JavaScript
    20% Python
    20% Typescript +2
    15% HTML5
    10% Redux

    Vlas Zubenko is a web development firm. The team specializes in Web Development and UX/UI Design, and the agency is based in Miami Beach, Florida.

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  • DevX360 Logotype

    DevX360

    Not yet reviewed

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

    Services provided

    40% Web Development
    40% Custom Software Development
    10% UX/UI Design +1
    10% Web Design

    Focus Areas

    45% JavaScript
    25% PHP
    15% HTML5 +2
    10% Other programming & scripting languages
    5% jquery

    DevX360, a software development firm, was founded in 2023. The team provides Custom Software Development and Web Development and is located in Ploiesti, Romania.

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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.

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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.

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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

    Reviews mention Proactive

    Client feedback highlights Digital Artflow's proactive approach, noting their ability to anticipate needs and enhance project outcomes. One client remarked on their outstanding communication regarding project milestones, stating they respond promptly to inquiries. Another noted that Digital Artflow made valuable suggestions that improved the final product, demonstrating foresight and engagement throughout the project. Overall, sentiment regarding their proactivity is highly positive, with clients appreciating their responsiveness and ability to exceed expectations.
    • Custom Software Dev for High-Performance Doors Company
      5.0 Jun 19, 2023

      They're able to anticipate our needs, which allows us to take the program to a level that exceeds our original goals.

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    • Custom Software Dev for Modular Construction Company
      5.0 Jan 12, 2023

      They were able to clearly see what I wanted to achieve and they have made other suggestions at various points of the project that have improved the end result.

      Read Full Review
    Read All 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.

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    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)
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  • 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
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  • Global Software Services Pty Ltd Logotype

    4.5 1 review
    Undisclosed
    $25 - $49 / hr
    2 - 9
    Vereeniging, South Africa

    Services provided

    10% Web Development
    10% Application Management & Support
    10% Application Testing +7
    10% Custom Software Development
    10% E-Commerce Development
    10% Logo
    10% Mobile App Development
    10% Other Application Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    15% JavaScript
    55% C#
    30% ASP.NET

    Global Software Services Pty Ltd specializes in developing software solutions tailored to industry-specific needs, such as ISO document control compliance. Clients commend the company for its effective project management, strong communication, and comprehensive IT expertise. The team's proficiency in programming tools is highlighted as particularly noteworthy, contributing to the overall positive feedback from clients.

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  • inmedium.pl agencja interaktywna Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Media Planning & Buying
    20% Pay Per Click +3
    20% Web Design
    15% Search Engine Optimization
    15% Social Media Marketing

    Focus Areas

    34% JavaScript
    33% PHP
    33% SQL

    Inmedium.pl agencja interaktywna is a small media planning & buying company based in Katowice, Poland. Their services include Media Planning & Buying and Pay Per Click.

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  • TechThink Hub Indonesia Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Application Management & Support
    20% IoT Development +3
    20% Mobile App Development
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    15% JavaScript
    35% AJAX
    30% Python +1
    20% SQL

    TechThink Hub Indonesia is a custom software development company. They are located in Bogor, Indonesia and have small team. They focus on Custom Software Development and Web Development.

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  • The Gold Technologies Logotype

    The Gold Technologies

    Not yet reviewed

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

    Services provided

    15% Web Development
    20% Application Testing
    15% Custom Software Development +4
    15% E-Commerce Development
    15% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    20% JavaScript
    20% PHP
    15% Python +4
    15% SQL
    10% HTML5
    10% Java
    10% jquery

    The Gold Technologies is an Application Testing company. The company is located in Noida, India. Their services include Application Testing and Custom Software Development.

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  • Webinside LTD Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    2 - 9
    Tel Aviv-Yafo, Israel

    Services provided

    25% Web Development
    50% Web Design
    25% E-Commerce Development

    Focus Areas

    20% JavaScript
    60% PHP
    15% AJAX +1
    5% XML

    Launched in 2012, Webinside LTD is a small web design agency in Tel Aviv-Yafo, Israel and Haifa, Israel. Their team provides Web Design and E-Commerce Development.

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  • ITBee Solutions Logotype

    Not yet reviewed

    $10,000+
    < $25 / hr
    10 - 49
    Ho Chi Minh, Vietnam

    Services provided

    30% Web Development
    40% Mobile App Development
    20% E-Commerce Development +2
    5% AR/VR Development
    5% Blockchain

    Focus Areas

    10% JavaScript
    20% Other programming & scripting languages
    10% Kotlin +8
    10% Objective C
    10% PHP
    10% SQL
    10% Swift
    5% AJAX
    5% C#
    5% Java
    5% Python

    ITBee Solutions is a mobile app development firm. Founded in 2017, the firm is based in Ho Chi Minh, Vietnam. Their services include Mobile App Development and Web Development.

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  • Axsistec Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    40% Custom Software Development
    25% IT Staff Augmentation +3
    10% CRM Consulting and SI
    10% Mobile App Development
    5% E-Commerce Development

    Focus Areas

    10% JavaScript
    60% C#
    30% Other programming & scripting languages

    Axsistec is a software development firm established in 1999. Their team specializes in Custom Software Development and IT staff augmentation.

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  • Local to Digital Logotype

    Local to Digital

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9

    Services provided

    10% Web Development
    20% Search Engine Optimization
    14% Low/No Code Development +10
    10% E-Commerce Development
    10% Ecommerce Marketing
    5% Advertising
    5% Affiliate Marketing
    5% Content Marketing
    5% Conversion Optimization
    5% Graphic Design
    5% Pay Per Click
    5% Social Media Marketing
    1% Web Design

    Focus Areas

    40% JavaScript
    30% PHP
    20% Python +1
    10% HTML5

    Local to Digital, a SEO services firm, was founded in 2023. The team offers Search Engine Optimization and Web Development and is based in London, England.

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  • BetaMize Logotype

    BetaMize

    Not yet reviewed

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

    Services provided

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

    Focus Areas

    30% JavaScript
    15% Elixir
    10% HTML5 +7
    10% Redux
    10% SQL
    5% Other programming & scripting languages
    5% PHP
    5% Python
    5% Ruby
    5% Typescript

    BetaMize is a software development company. Launched in 2023, the team focuses on Custom Software Development and Web Development. The agency is headquartered in Indore, India.

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  • Unique SmartWeb Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Search Engine Optimization
    25% UX/UI Design +1
    25% Web Design

    Focus Areas

    25% JavaScript
    50% PHP
    25% HTML5

    Unique SmartWeb is a SEO services firm located in Rajpura, India. They provide Search Engine Optimization and Web Design.

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  • Digital Lightbridge Marketing Agency Logotype

    Not yet reviewed

    $10,000+
    $100 - $149 / hr
    2 - 9
    San Antonio, FL

    Services provided

    10% Web Development
    14% Low/No Code Development
    10% Branding +11
    10% Logo
    10% Social Media Marketing
    10% Video Production
    5% AI Development
    5% Business Consulting
    5% Digital Strategy
    5% E-Commerce Development
    5% Marketing Strategy
    5% Search Engine Optimization
    5% UX/UI Design
    1% Web Design

    Focus Areas

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

    Digital Lightbridge Marketing Agency is a website development firm based in San Antonio, Florida. They specialize in Web Development and Branding.

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  • Droomwork Logotype

    5.0 1 review
    $5,000+
    $25 - $49 / hr
    10 - 49
    Lekki, Nigeria

    Services provided

    10% Web Development
    60% Custom Software Development
    10% IT Staff Augmentation +2
    10% Low/No Code Development
    10% Mobile App Development

    Focus Areas

    45% JavaScript
    15% PHP
    15% Python +3
    15% Redux
    5% Go
    5% Java

    Droomwork specializes in Website Development and Web Design, offering comprehensive web programming services. Feedback consistently highlights their timely delivery, exceptional design capabilities, and a strong alignment with client needs and values. Clients appreciate their professional attitude, efficient project management, and ability to deliver outstanding results swiftly.

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  • reaze GmbH Logotype

    reaze GmbH

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Web Design
    10% Branding +5
    10% Digital Strategy
    10% Graphic Design
    10% Logo
    10% Product Design
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    20% PHP
    15% SQL +9
    10% HTML5
    10% Typescript
    5% C#
    5% C++
    5% Java
    5% Kotlin
    5% Objective C
    5% Redux
    5% Swift

    Reaze GmbH is a web design company. They are headquartered in Siegen, Germany. Their team offers Web Design and Web Development.

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  • TEK2D - Website Design & Development Agency USA Logotype

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Graphic Design
    15% Web Design +7
    10% E-Commerce Development
    10% UX/UI Design
    5% Product Design
    4% Other Design
    2% Logo
    2% Packaging Design
    2% Print Design

    Focus Areas

    20% JavaScript
    30% PHP
    20% AJAX +2
    20% SQL
    10% Other programming & scripting languages

    TEK2D - Website Design & Development Agency USA, a graphic design agency, was launched in 2014. The team offers Graphic Design and Web Development.

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  • SIX-O-TWO Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9
    São Paulo, Brazil

    Services provided

    15% Web Development
    50% UX/UI Design
    15% Mobile App Development +2
    10% Graphic Design
    10% Web Design

    Focus Areas

    25% JavaScript
    25% PHP
    25% Redux +1
    25% SQL

    User experience design company SIX-O-TWO was established in 2020. The small team focuses on UX/UI Design and Web Development.

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  • Sabria-IT Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% E-Commerce Development
    20% Mobile App Development +2
    20% Search Engine Optimization
    20% Web Design

    Focus Areas

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

    Sabria-IT is a SEO services firm. The team is in Multan, Pakistan, and their services include Search Engine Optimization and Web Design.

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  • Seven Seconds To Midnight Logotype

    Seven Seconds To Midnight

    Not yet reviewed

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

    Services provided

    20% Web Development
    40% Custom Software Development
    20% Mobile App Development +4
    5% Cloud Consulting & SI
    5% Enterprise App Modernization
    5% IT Strategy Consulting
    5% Other Application Development

    Focus Areas

    10% JavaScript
    25% Python
    20% Kotlin +3
    15% C#
    15% Java
    15% SQL

    Seven Seconds To Midnight, a software development company, was launched in 2022. The company focuses on Custom Software Development and Web Development.

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  • Brilliant Consulting Logotype

    Not yet reviewed

    $25,000+
    $100 - $149 / hr
    10 - 49
    Andorra la Vella, Andorra

    Services provided

    15% Web Development
    30% Custom Software Development
    20% Enterprise App Modernization +2
    20% IT Strategy Consulting
    15% Mobile App Development

    Focus Areas

    20% JavaScript
    40% Typescript
    20% Go +1
    20% Redux

    Established in 2013, Brilliant Consulting is a software development company. The small team provides Custom Software Development and IT strategy consulting.

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  • Cybug Logotype

    Cybug

    Not yet reviewed

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

    Services provided

    25% Web Development
    25% Mobile App Development
    25% UX/UI Design +2
    15% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    15% JavaScript
    25% Python
    20% PHP +4
    20% SQL
    10% HTML5
    5% AJAX
    5% Kotlin

    Established in 2018, Cybug is an user experience design company. Their services include UX/UI Design and Custom Software Development.

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  • DATAFUSE Logotype

    Not yet reviewed

    $5,000+
    Undisclosed
    2 - 9
    Paris, France

    Services provided

    25% Web Development
    25% AI Development
    25% Custom Software Development +1
    25% Mobile App Development

    Focus Areas

    25% JavaScript
    25% HTML5
    25% Python +1
    25% Swift

    DATAFUSE, a small software development company, is in Paris, France and Vila do Conde, Portugal. The team offers Custom Software Development and Web Development.

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  • Octa Crafts Logotype

    Octa Crafts

    Not yet reviewed

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

    Services provided

    25% Web Development
    15% AI Development
    15% Custom Software Development +4
    15% Search Engine Optimization
    10% Mobile App Development
    10% Social Media Marketing
    10% UX/UI Design

    Focus Areas

    20% JavaScript
    25% HTML5
    15% Swift +4
    15% jquery
    10% PHP
    10% Typescript
    5% Other programming & scripting languages

    Octa Crafts is a website development firm. The Karachi, Pakistan-based agency specializes in Web Development and Custom Software Development.

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  • Hicron Software Logotype

    Not yet reviewed

    $25,000+
    $50 - $99 / hr
    250 - 999
    Wrocław, Poland

    Services provided

    15% Web Development
    20% Custom Software Development
    15% IT Managed Services +7
    10% Application Testing
    10% Cloud Consulting & SI
    10% IT Staff Augmentation
    5% Application Management & Support
    5% DevOps Managed Services
    5% Enterprise App Modernization
    5% Microservices Architecture Services

    Focus Areas

    10% JavaScript
    25% Java
    15% Other programming & scripting languages +8
    10% ASP.NET
    10% C#
    5% ASP
    5% PHP
    5% Python
    5% SQL
    5% Typescript
    5% jquery

    Hicron Software is a software development firm. Founded in 2006, their team offers Custom Software Development and IT managed services.

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  • Semantic Global Logotype

    Not yet reviewed

    $25,000+
    $25 - $49 / hr
    250 - 999
    Sahibzada Ajit Singh Nagar, India

    Services provided

    15% Web Development
    15% BI & Big Data Consulting & SI
    15% Cloud Consulting & SI +4
    15% E-Commerce Development
    15% Graphic Design
    15% Mobile App Development
    10% Search Engine Optimization

    Focus Areas

    10% JavaScript
    10% AJAX
    10% Kotlin +7
    10% PHP
    10% Python
    10% Redux
    10% SQL
    10% Swift
    10% Typescript
    10% jquery

    Semantic Global is a midsize graphic design agency in Sahibzada Ajit Singh Nagar, India and Sahibzada Ajit Singh Nagar, India. Their services include Graphic Design and BI & big data consulting &

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  • IT grows DOO Novi Sad Logotype

    Not yet reviewed

    Undisclosed
    $25 - $49 / hr
    2 - 9
    Novi Sad, Serbia

    Services provided

    15% Web Development
    40% Custom Software Development
    15% AI Development +2
    15% Application Management & Support
    15% Mobile App Development

    Focus Areas

    20% JavaScript
    20% Java
    20% Typescript +3
    15% Kotlin
    15% Python
    10% Swift

    IT grows DOO Novi Sad is a Novi Sad, Serbia-based custom software development company. Their services include Custom Software Development and Web Development.

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  • Weavolve Solutions Logotype

    4.5 1 review
    $1,000+
    < $25 / hr
    10 - 49
    Anand, India

    Services provided

    15% Web Development
    20% IT Managed Services
    20% IT Strategy Consulting +6
    10% Custom Software Development
    10% E-Commerce Development
    10% Mobile App Development
    5% Cloud Consulting & SI
    5% Logo
    5% Web Design

    Focus Areas

    25% JavaScript
    25% PHP
    20% Java +3
    10% AJAX
    10% SQL
    10% Swift

    WEAVOLVE IS THE END POINT FOR YOUR SEARCH ABOUT TECH RELATED QUERIES AND PROJECTS. WE AID YOU IN ACHIEVING YOUR TARGETS WITH EXCELLENT SUCCESS RATIO. WE DELIVER CUSTOMIZED SERVICES BASED UPON YOUR

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  • GegaByte Logotype

    5.0 1 review
    Undisclosed
    $25 - $49 / hr
    10 - 49
    Islamabad, Pakistan

    Services provided

    20% Web Development
    15% Custom Software Development
    15% E-Commerce Development +5
    15% UX/UI Design
    15% Web Design
    10% Logo
    5% HR Consulting
    5% Staffing

    Focus Areas

    20% JavaScript
    20% HTML5
    20% PHP +4
    15% jquery
    10% AJAX
    10% Visual Basic
    5% SQL

    GegaByte Technologies is a leading Website Design and Development Company and an interactive personal portfolio of Bilal Kabeer Butt, which provides state-of-the-art solutions that are the supreme

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  • Pardhansingh.com Logotype

    Not yet reviewed

    $1,000+
    < $25 / hr
    Freelancer
    Montréal, Canada

    Services provided

    33% Web Development
    34% Web Design
    33% Mobile App Development

    Focus Areas

    33% JavaScript
    34% AJAX
    33% PHP

    Pardhansingh.com, a web design company, was launched in 2016. The agency offers Web Design and Mobile App Development.

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  • Loud Mob Media Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Advertising
    10% Branding +9
    10% Mobile & App Marketing
    10% Mobile App Development
    10% Packaging Design
    10% UX/UI Design
    10% Web Design
    5% E-Commerce Development
    5% Graphic Design
    5% Logo
    5% Product Design

    Focus Areas

    30% JavaScript
    20% Java
    20% Swift +3
    10% Objective C
    10% Python
    10% SQL

    Loud Mob Media is an Advertising company. The team provides Advertising and UX/UI Design and is located in Pune, India and Bengaluru, India.

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  • Unifynd Technologies Pvt Ltd Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Custom Software Development
    20% E-Commerce Development +2
    20% IT Strategy Consulting
    20% Mobile App Development

    Focus Areas

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

    Launched in 2017, Unifynd Technologies Pvt Ltd is a small IT strategy consulting company. Their team focuses on IT strategy consulting and Custom Software Development.

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  • Cubixsoft Logotype

    Cubixsoft

    5.0 3 reviews
    Undisclosed
    $25 - $49 / hr
    2 - 9

    Services provided

    25% Web Development
    60% Low/No Code Development
    15% Mobile App Development

    Focus Areas

    40% JavaScript
    20% PHP
    15% Python +2
    15% Typescript
    10% SQL

    We are passionate about transforming ideas into powerful digital solutions. With years of expertise in web development, no-code platforms like Bubble.io, mobile app development, and UI/UX design, we

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  • ChameleonDev Logotype

    5.0 1 review
    Undisclosed
    $25 - $49 / hr
    2 - 9
    Málaga, Spain

    Services provided

    35% Web Development
    35% Web Design
    20% UX/UI Design +1
    10% Other Digital Marketing

    Focus Areas

    30% JavaScript
    30% PHP
    20% Go +1
    20% HTML5

    ChameleonDev is a boutique web development agency helping startups and businesses launch fast, custom-tailored landing pages and websites that drive results. We combine strategy, design, and

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  • SOFTLEEK LIMITED Logotype

    5.0 1 review
    Undisclosed
    $25 - $49 / hr
    2 - 9
    Nairobi, Kenya

    Services provided

    15% Web Development
    15% BI & Big Data Consulting & SI
    15% IT Strategy Consulting +5
    15% Mobile App Development
    10% Cloud Consulting & SI
    10% ERP Consulting and SI
    10% Graphic Design
    10% UX/UI Design

    Focus Areas

    50% JavaScript
    50% HTML5

    SOFTLEEK LIMITED specializes in Website Development and ERP development services, delivering quality work in a timely manner. The reviews highlight the company's effective project management and their ability to meet client objectives, such as creating ERP systems for shipping and tracking management, with no noted areas for improvement.

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  • Originative Lab Logotype

    Originative Lab

    5.0 1 review
    Undisclosed
    $25 - $49 / hr
    2 - 9

    Services provided

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

    Focus Areas

    55% JavaScript
    20% HTML5
    15% PHP +1
    10% SQL

    Originative Lab specializes in Website Development, Web Design, and Online Development, offering services such as e-commerce website creation, SEO, and branding. Reviews highlight their ability to deliver modern, functional websites that align with clients' visions, resulting in significant business growth. Clients commend their attention to detail, creativity, and effective project management, emphasizing their professionalism and friendly approach.

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  • Techoven Solutions Logotype

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

    Services provided

    35% Web Development
    35% Web Design
    30% Low/No Code Development

    Focus Areas

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

    Our Vision & Missionour vision is to be the leading provider of innovative solutions, renowned for our unwavering commitment to client satisfaction. Our mission is to deliver exceptional

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  • Hitara IT Solutions Logotype

    5.0 1 review
    Undisclosed
    < $25 / hr
    2 - 9
    Ahmedabad, India

    Services provided

    50% Web Development
    20% Mobile App Development
    10% AI Development +2
    10% E-Commerce Development
    10% UX/UI Design

    Focus Areas

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

    We’re a team of passionate developers, designers, and strategists dedicated to creating impactful digital solutions. With expertise across diverse technologies and a commitment to innovation, we

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  • Meerkatly Software House Logotype

    Meerkatly Software House

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9

    Services provided

    15% Web Development
    25% Custom Software Development
    25% Mobile App Development +3
    15% Blockchain
    10% E-Commerce Development
    10% Enterprise App Modernization

    Focus Areas

    100% JavaScript

    Meerkatly Software House is a Prague, Czech Republic-based software development firm. Established in 2019, the team offers Custom Software Development and Mobile App Development.

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  • Mediatopia Logotype

    Not yet reviewed

    $10,000+
    $150 - $199 / hr
    2 - 9
    Bristol, England

    Services provided

    30% Web Development
    40% Custom Software Development
    20% AI Development +1
    10% Web Design

    Focus Areas

    35% JavaScript
    35% Python
    30% Typescript

    Established in 2010, Mediatopia is a software development firm. The team focuses on Custom Software Development and Web Development.

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  • ShopSupport Logotype

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    2 - 9
    Camberwell, Australia

    Services provided

    40% Web Development
    45% E-Commerce Development
    15% IT Managed Services

    Focus Areas

    25% JavaScript
    75% PHP

    E-commerce development company ShopSupport is based in Camberwell, Australia. Founded in 2016, the team offers E-Commerce Development and Web Development.

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  • Sidecrox, SRL Logotype

    Sidecrox, SRL

    Not yet reviewed

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

    Services provided

    40% Web Development
    40% Mobile App Development
    20% IT Strategy Consulting

    Focus Areas

    25% JavaScript
    25% Java
    25% PHP +2
    20% SQL
    5% ASP.NET

    Sidecrox, SRL is a mobile application development company. They provide Mobile App Development and Web Development and were launched in 2018. The firm is based in Santo Domingo, Dominican Republic.

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  • Chain Effect Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    2 - 9
    Ljubljana, Slovenia

    Services provided

    15% Web Development
    25% UX/UI Design
    20% Blockchain +3
    15% Mobile App Development
    15% Web Design
    10% Digital Strategy

    Focus Areas

    60% JavaScript
    20% Java
    10% C# +1
    10% Go

    Chain Effect is an user experience company headquartered in Ljubljana, Slovenia. Their services include UX/UI Design and Blockchain.

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  • Vocter Logotype

    Not yet reviewed

    $5,000+
    < $25 / hr
    2 - 9
    Kharkiv, Ukraine

    Services provided

    40% Web Development
    40% Custom Software Development
    20% Other Application Development

    Focus Areas

    25% JavaScript
    25% C#
    10% AJAX +4
    10% ASP.NET
    10% Redux
    10% SQL
    10% Typescript

    Software development firm Vocter is located in Kharkiv, Ukraine. They provide Custom Software Development and Web Development.

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  • B-IOT Solutions Pvt Ltd. Logotype

    Not yet reviewed

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

    Services provided

    60% Web Development
    10% Cloud Consulting & SI
    10% Custom Software Development +2
    10% E-Commerce Development
    10% Mobile App Development

    Focus Areas

    15% JavaScript
    40% C#
    20% Redux +3
    10% Python
    10% SQL
    5% PHP

    B-IOT Solutions Pvt Ltd. Is a web development firm. Their small team of employees is located in New Delhi, India. Their team offers Web Development and Custom Software Development.

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  • CODATIVITY Software Solutions Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    2 - 9
    Dubai, United Arab Emirates

    Services provided

    45% Web Development
    35% Custom Software Development
    10% Cloud Consulting & SI +1
    10% Enterprise App Modernization

    Focus Areas

    20% JavaScript
    50% ASP.NET
    20% C# +1
    10% SQL

    Website development firm CODATIVITY Software Solutions was launched in 2016. In Dubai, United Arab Emirates, the team specializes in Web Development and Custom Software Development.

    Read more
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  • Devconnect Logotype

    Not yet reviewed

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

    Services provided

    40% Web Development
    35% Web Design
    15% Mobile App Development +1
    10% UX/UI Design

    Focus Areas

    25% JavaScript
    15% AJAX
    15% PHP +3
    15% Python
    15% Redux
    15% SQL

    Devconnect, a website development firm, is headquartered in Agadir, Morocco. The team offers Web Development and Web Design.

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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 ImageX
2 xfive
3 Brainhub
4 The Software House
5 Xmartlabs
6 Airdev
7 WPWeb Infotech
8 Lizard Global
9 PopArt Studio
10 Softonix
11 GeekyAnts
12 INOXOFT
13 Scopic
14 HTMLPanda
15 Vention

List of the Top 15 JavaScript Development Companies

  1. 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
  2. xfive Logotype

    xfive

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

    Ability to deliver

    39.3/40.0
    19.4/20 Reviews
    10/10 Clients & Experience
    9.9/10 Market Presence

    Service focus

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

    Brainhub

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

    Ability to deliver

    39.3/40.0
    19.4/20 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

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

    Ability to deliver

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

    Service focus

    40% Web Development
    60% JavaScript
    60% Other
    View Profile Visit Website
  5. 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
  6. Airdev Logotype

    Airdev

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

    Ability to deliver

    38.5/40.0
    19.2/20 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. WPWeb Infotech Logotype

    WPWeb Infotech

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

    Ability to deliver

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

    Service focus

    65% Web Development
    20% JavaScript
    35% Other
    View Profile Visit Website
  8. 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
  9. 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
  10. Softonix Logotype

    Softonix

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

    Ability to deliver

    36.3/40.0
    17.4/20 Reviews
    10/10 Clients & Experience
    8.9/10 Market Presence

    Service focus

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

    INOXOFT

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

    Ability to deliver

    39.6/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    10/10 Market Presence

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  13. Scopic Logotype

    Scopic

    $10,000+
    $50 - $99 / hr
    250 - 999
    Marlborough, MA

    Ability to deliver

    39.3/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

    25% Web Development
    25% JavaScript
    75% Other
    View Profile Visit Website
  14. HTMLPanda Logotype

    HTMLPanda

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

    Ability to deliver

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

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  16. SpdLoad Logotype

    SpdLoad

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

    Ability to deliver

    36.4/40.0
    16.6/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

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

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

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

    Service focus

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

    PowerGate Software

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

    Ability to deliver

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

    Service focus

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

    Incora

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

    Ability to deliver

    37/40.0
    18/20 Reviews
    10/10 Clients & Experience
    9/10 Market Presence

    Service focus

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

    Toptal

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

    Ability to deliver

    38.3/40.0
    18.4/20 Reviews
    9.9/10 Clients & Experience
    10/10 Market Presence

    Service focus

    15% Web Development
    25% JavaScript
    85% Other
    View Profile Visit Website
  21. 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
  22. 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
  23. Blazity Logotype

    Blazity

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

    Ability to deliver

    37.5/40.0
    18.2/20 Reviews
    10/10 Clients & Experience
    9.3/10 Market Presence

    Service focus

    50% Web Development
    70% JavaScript
    50% 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

    36.5/40.0
    16.8/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

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

    Human Made

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

    Ability to deliver

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

    Service focus

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

    XWP

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

    Ability to deliver

    35.5/40.0
    15.8/20 Reviews
    10/10 Clients & Experience
    9.7/10 Market Presence

    Service focus

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

    Flowout

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

    Ability to deliver

    36.1/40.0
    20/20 Reviews
    10/10 Clients & Experience
    6.1/10 Market Presence

    Service focus

    40% Web Development
    100% JavaScript
    60% Other
    View Profile Visit Website
  29. Sigma Software Group Logotype

    Sigma Software Group

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

    Ability to deliver

    37.6/40.0
    17.8/20 Reviews
    10/10 Clients & Experience
    9.8/10 Market Presence

    Service focus

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

    Merixstudio

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

    Ability to deliver

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

    Service focus

    50% Web Development
    10% JavaScript
    50% Other
    View Profile Visit Website

Top JavaScript Development Agencies

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

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

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

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

Clutch data shows project budgets range widely:

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

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

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

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

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

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

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

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

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

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