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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: September 18, 2026
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22,371 Companies

Programming & Scripting: JavaScript

List of the Top JavaScript Development Companies

  • LetX Technologies Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% Custom Software Development
    15% E-Commerce Development +5
    10% AI Consulting
    10% AI Development
    10% BI & Big Data Consulting & SI
    10% ERP Consulting and SI
    5% IT Managed Services

    Focus Areas

    10% JavaScript
    25% PHP
    25% Python +3
    15% Other programming & scripting languages
    15% SQL
    10% Kotlin

    LetX Technologies, a custom software development firm, was established in 2024. The team focuses on Custom Software Development and Web Development.

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  • Chivalae Digital Marketing Agency Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    10 - 49
    New Delhi, India

    Services provided

    10% Web Development
    5% Account-Based Marketing
    5% Advertising +16
    5% Branding
    5% Content Marketing
    5% Conversion Optimization
    5% Custom Software Development
    5% Digital Strategy
    5% Ecommerce Marketing
    5% Email Marketing
    5% Graphic Design
    5% Mobile & App Marketing
    5% Other Digital Marketing
    5% Packaging Design
    5% Pay Per Click
    5% Performance Marketing
    5% Product Marketing
    5% Search Engine Optimization
    5% Social Media Marketing

    Focus Areas

    15% JavaScript
    20% PHP
    15% SQL +7
    10% AJAX
    10% HTML5
    10% jquery
    5% Kotlin
    5% Python
    5% Typescript
    5% XML

    Chivalae Digital Marketing Agency is a web development firm. They were founded in 2022 and provide Web Development and Advertising.

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  • MediVerticals Logotype

    MediVerticals

    Not yet reviewed

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

    Services provided

    15% Web Development
    10% Back Office Outsourcing
    10% HR Outsourcing +8
    10% IT Managed Services
    10% IT Staff Augmentation
    10% Pay Per Click
    10% Search Engine Optimization
    10% Web Design
    5% Custom Software Development
    5% Customer Service Outsourcing
    5% Recruitment Process Outsourcing

    Focus Areas

    10% JavaScript
    20% Visual Basic
    15% HTML5 +5
    15% PHP
    10% ASP.NET
    10% Python
    10% Ruby
    10% SQL

    MediVerticals, a web development company, is located in Frisco, Texas. Their services include Web Development and Search Engine Optimization.

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  • Brigada Logotype

    Brigada

    Not yet reviewed

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

    Services provided

    15% Web Development
    20% AI Development
    20% Custom Software Development +6
    15% Mobile App Development
    10% AI Consulting
    5% Call Center Services
    5% DevOps Managed Services
    5% Search Engine Optimization
    5% Web Design

    Focus Areas

    10% JavaScript
    50% PHP
    15% Other programming & scripting languages +2
    15% Python
    10% Typescript

    Brigada, a software development firm, was founded in 2024. The company focuses on Custom Software Development and Artificial Intelligence, and is small.

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  • Indai Technologies Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% E-Commerce Development
    10% Commercial Development +6
    10% Custom Software Development
    10% DevOps Managed Services
    10% IT Managed Services
    10% Mobile App Development
    10% UX/UI Design
    10% Web Design

    Focus Areas

    15% JavaScript
    20% PHP
    10% AJAX +6
    10% HTML5
    10% Python
    10% SQL
    10% Typescript
    10% jquery
    5% Ember.js

    E-commerce development firm Indai Technologies is located in New Delhi, India. They provide E-Commerce Development and Web Design.

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  • AblyCode Logotype

    AblyCode

    Not yet reviewed

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

    Services provided

    15% Web Development
    15% Mobile App Development
    10% AI Development +12
    5% AI Agents
    5% AI Consulting
    5% API Development
    5% Application Management & Support
    5% Application Testing
    5% Cloud Consulting & SI
    5% Custom Software Development
    5% E-Commerce Development
    5% ERP Consulting and SI
    5% Generative AI
    5% IT Strategy Consulting
    5% Microservices Architecture Services

    Focus Areas

    10% JavaScript
    15% Typescript
    10% Python +11
    10% Redux
    10% SQL
    5% Ember.js
    5% HTML5
    5% Java
    5% Kotlin
    5% Rust
    5% Swift
    5% Visual Basic
    5% backbone.js
    5% jquery

    AblyCode is a mobile application development firm. The small Bhopal, India-based team focuses on Mobile App Development and Web Development. The company was launched in 2016.

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  • Dibix Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49
    Cascina, Italy

    Services provided

    10% Web Development
    15% E-Commerce Development
    15% Search Engine Optimization +6
    10% AI Agents
    10% Advertising
    10% Content Marketing
    10% Digital Strategy
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    15% JavaScript
    15% AJAX
    15% PHP +5
    15% SQL
    10% Java
    10% Other programming & scripting languages
    10% Python
    10% Visual Basic

    Based in Cascina, Italy, Dibix is a small SEO agency. The team specializes in Search Engine Optimization and E-Commerce Development.

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  • Golden Middle Logotype

    Golden Middle

    Not yet reviewed

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

    Services provided

    15% Web Development
    35% Custom Software Development
    20% AI Development +3
    10% API Development
    10% E-Commerce Development
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    25% Python
    20% Ruby +3
    20% SQL
    15% Rust
    10% PHP

    Golden Middle, a software development company, is based in Almaty, Kazakhstan. They provide Custom Software Development and Artificial Intelligence and were established in 2023.

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  • Cactus Digital SA Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    10 - 49
    Thessaloniki, Greece

    Services provided

    15% Web Development
    15% E-Commerce Development
    15% Ecommerce Marketing +5
    15% Performance Marketing
    15% UX/UI Design
    10% Search Engine Optimization
    10% Social Media Marketing
    5% Custom Software Development

    Focus Areas

    10% JavaScript
    40% PHP
    20% HTML5 +3
    10% AJAX
    10% Python
    10% SQL

    Launched in 2011, Cactus Digital SA is a small Ecommerce Marketing company located in Thessaloniki, Greece. Their team provides Ecommerce Marketing and Performance Marketing.

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  • OHM Technology Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    30% AI Development
    20% Custom Software Development +4
    10% IT Staff Augmentation
    10% Mobile App Development
    10% Search Engine Optimization
    10% Social Media Marketing

    Focus Areas

    15% JavaScript
    30% Python
    15% Java +4
    15% Typescript
    10% PHP
    10% SQL
    5% Rust

    AI development company OHM Technology is located in Islamabad, Pakistan and Montréal, Canada. They focus on Artificial Intelligence and Custom Software Development.

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  • Softheight Logotype

    Softheight

    Not yet reviewed

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

    Services provided

    15% Web Development
    25% E-Commerce Development
    15% AI Development +4
    15% Custom Software Development
    10% AI Agents
    10% API Development
    10% Mobile App Development

    Focus Areas

    10% JavaScript
    15% PHP
    10% HTML5 +8
    10% Python
    10% Redux
    10% SQL
    10% Typescript
    10% jquery
    5% AJAX
    5% Ember.js
    5% Ruby

    Softheight is a Multan, Pakistan-based e-commerce development firm. The team focuses on E-Commerce Development and Custom Software Development.

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  • Essen Software Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% AI Development
    15% AI Agents +5
    15% Custom Software Development
    10% AI Consulting
    10% DevOps Managed Services
    10% Generative AI
    10% Mobile App Development

    Focus Areas

    15% JavaScript
    25% Swift
    15% Java +5
    10% Kotlin
    10% Objective C
    10% Python
    10% SQL
    5% Typescript

    Essen Software, an AI company, was launched in 2023. The firm focuses on Artificial Intelligence and Custom Software Development, and is small.

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  • Zeto Studio Logotype

    Not yet reviewed

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

    Services provided

    15% Web Development
    30% Custom Software Development
    20% AI Development +3
    15% Mobile App Development
    10% Cloud Consulting & SI
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    20% Typescript
    10% C# +7
    10% Java
    10% Python
    10% Redux
    10% SQL
    10% Swift
    5% HTML5
    5% Rust

    Zeto Studio is a small custom software development firm. Launched in 2023, the team provides Custom Software Development and Artificial Intelligence.

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  • HQ GmbH Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    10 - 49
    Auma-Weidatal, Germany

    Services provided

    15% Web Development
    35% E-Commerce Development
    10% Conversion Optimization +5
    10% Custom Software Development
    10% ERP Consulting and SI
    10% IT Managed Services
    5% Digital Strategy
    5% IT Strategy Consulting

    Focus Areas

    10% JavaScript
    25% PHP
    10% HTML5 +8
    10% Java
    10% XML
    10% jquery
    5% AJAX
    5% C#
    5% Other programming & scripting languages
    5% Perl
    5% Ruby

    HQ GmbH is an e-commerce development company. Their small team is located in Auma-Weidatal, Germany and specializes in E-Commerce Development and Web Development. The company was launched in 1994.

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  • ready2UP Logotype

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

    Services provided

    12% Web Development
    18% E-Commerce Development
    15% Ecommerce Marketing +5
    15% Search Engine Optimization
    14% Advertising
    11% Mobile App Development
    10% AR/VR Development
    5% Pay Per Click

    Focus Areas

    17% JavaScript
    24% Kotlin
    22% PHP +3
    17% Java
    17% SQL
    3% XML

    ready2UP offers Website Development, including eCommerce, advertising, and performance marketing. Reviews highlight their strong project management, timely delivery, and unique approach to client needs. Clients appreciate ready2UP for their alignment with company values, budget-friendly pricing, and potential to expand services, especially in Web Design.

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  • ZOOM Marketing Digital Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Guadalajara, Mexico

    Services provided

    15% Web Development
    25% Advertising
    25% Digital Strategy +2
    25% Social Media Marketing
    10% AR/VR Development

    Focus Areas

    13% JavaScript
    13% Apex
    13% Ember.js +5
    13% Java
    13% Python
    13% Redux
    12% AJAX
    10% Kotlin

    ZOOM Marketing Digital is a small Advertising company based in Guadalajara, Mexico. The team offers Advertising and Digital Strategy.

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  • DeLemon Studio Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Manama, Bahrain

    Services provided

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

    Focus Areas

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

    Established in 2009, DeLemon Studio is a social media marketing agency. The small team offers Social Media Marketing and Search Engine Optimization.

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  • Infinite 8 A.I. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Omaha, NE

    Services provided

    10% Web Development
    10% AI Consulting
    10% AI Development +7
    10% Blockchain
    10% Business Consulting
    10% Cloud Consulting & SI
    10% Cybersecurity
    10% Generative AI
    10% IT Managed Services
    10% IoT Development

    Focus Areas

    18% JavaScript
    18% C
    18% C++ +3
    18% Java
    18% Python
    10% HTML5

    Infinite 8 A.I., a cloud consulting & SI company, was founded in 2017. The small team offers cloud consulting & SI and Cybersecurity.

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  • Naomedia Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% Content Marketing
    15% Email Marketing +4
    15% Pay Per Click
    15% Search Engine Optimization
    15% Social Media Marketing
    15% Web Design

    Focus Areas

    18% JavaScript
    24% Java
    12% C# +4
    12% C++
    12% PHP
    12% Python
    10% SQL

    Naomedia is a social media marketing company. They are based in Casablanca, Morocco and Casablanca, Morocco and have small team. They offer Social Media Marketing and Content Marketing.

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  • Bluebird Soft Logotype

    Bluebird Soft

    Not yet reviewed

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

    Services provided

    15% Web Development
    40% Mobile App Development
    20% Custom Software Development +2
    15% UX/UI Design
    10% Web Design

    Focus Areas

    13% JavaScript
    20% PHP
    17% Python +5
    17% Visual Basic
    13% Kotlin
    8% Swift
    8% jquery
    4% backbone.js

    Bluebird Soft is a small mobile application development firm based in Multan, Pakistan. The team offers Mobile App Development and Custom Software Development.

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  • Miracuves Solutions Pvt. Ltd. Logotype

    5.0 14 reviews
    $5,000+
    $25 - $49 / hr
    50 - 249
    मुंबई, India

    Services provided

    10% Web Development
    40% Mobile App Development
    10% AI Development +5
    10% Custom Software Development
    10% IT Strategy Consulting
    10% Low/No Code Development
    5% E-Commerce Development
    5% Enterprise App Modernization

    Focus Areas

    10% JavaScript
    25% Kotlin
    10% Java +7
    10% Objective C
    10% PHP
    10% SQL
    10% Swift
    5% C#
    5% C++
    5% XML

    Miracuves Solutions Pvt. Ltd. is a web development company specializing in creating user-friendly and accessible websites. The firm's professionalism and effective communication were consistently highlighted, with 100% positive feedback emphasizing their exceptional project management and creative expertise. Their ability to deliver high-quality, eye-catching websites tailored to client needs was praised by all reviewers.

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    1 of 1 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

    Branding & Web Dev for Capital Market Infrastructure Firm

    5.0 — Miracuves Solutions Pvt. Ltd. built a capital market infrastructure company's website and incorporated all their services. They also created a colorful brand that reflected the client's services and Read more
    Read 1 Review

    Industry Experience

    Miracuves Solutions Pvt. Ltd. has demonstrated expertise across various industries, including Media, Financial Services, Telecommunications, Publishing, Real Estate, and Chemicals & Biotechnology. Clients commend their strong technical capabilities, effective project management, and tailored solutions that enhance security, branding, and user experience. Overall, feedback highlights their responsiveness and ability to deliver high-quality results, making them an excellent choice for organizations seeking innovative solutions in these sectors.

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    Media Financial services Telecommunications Publishing Real estate Chemicals & Biotechnology

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  • Sinaisoft Logotype

    5.0 1 review
    $5,000+
    $25 - $49 / hr
    50 - 249
    Hanoi, Vietnam

    Services provided

    10% Web Development
    20% AI Development
    20% Blockchain +3
    20% Generative AI
    20% Mobile App Development
    10% Low/No Code Development

    Focus Areas

    10% JavaScript
    20% Python
    15% Typescript +8
    10% Objective C
    10% PHP
    10% Ruby
    5% AJAX
    5% Go
    5% Java
    5% Redux
    5% Swift

    Sinaisoft provides Website Development, Web Design, and Online Development services, with a strong focus on delivering high-quality web and mobile apps. Reviews from clients highlight their professional communication, timely delivery, and high-performance staff, making them a reliable partner for web programming projects. Clients are consistently satisfied with their outcomes, noting no areas for improvement.

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  • Quoin Inc. Logotype

    Not yet reviewed

    $25,000+
    $100 - $149 / hr
    50 - 249
    Boston, MA

    Services provided

    10% Web Development
    15% Mobile App Development
    15% Web Design +6
    10% BI & Big Data Consulting & SI
    10% Branding
    10% Custom Software Development
    10% ECM Consulting and SI
    10% IoT Development
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    40% Other programming & scripting languages
    10% C++ +4
    10% Java
    10% Python
    10% Ruby
    10% Swift

    Established in 1994, Quoin Inc. Is a midsize web design company. Their services include Web Design and Mobile App Development.

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  • World Centre, Inc Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    Freelancer
    Brush Prairie, WA

    Services provided

    20% Web Development
    20% Advertising
    20% E-Commerce Development +2
    20% Marketing Strategy
    20% Web Design

    Focus Areas

    20% JavaScript
    40% Other programming & scripting languages
    20% PHP +1
    20% SQL

    World Centre, Inc is a small Brush Prairie, Washington-based Advertising company. Their services include Advertising and Marketing Strategy.

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  • Ether Jazz Internet Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    Freelancer
    West Linn, OR

    Services provided

    20% Web Development
    20% Content Marketing
    20% Graphic Design +2
    20% Search Engine Optimization
    20% Web Design

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% Other programming & scripting languages +2
    20% PHP
    20% XML

    Launched in 1999, Ether Jazz Internet is a Content Marketing company. The company offers Content Marketing and Graphic Design.

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  • Friendly Eagle Software Inc. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    Freelancer
    Edmonton, Canada

    Services provided

    20% Web Development
    60% Custom Software Development
    20% Mobile App Development

    Focus Areas

    20% JavaScript
    20% ASP
    20% C# +2
    20% SQL
    20% XML

    Friendly Eagle Software Inc. Is a custom software development company in Edmonton, Canada. The team offers Custom Software Development and Mobile App Development.

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  • Your Page Today Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    Freelancer
    Barre, VT

    Services provided

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

    Focus Areas

    20% JavaScript
    20% ASP
    20% Java +2
    20% PHP
    20% SQL

    Your Page Today is a Logo company. Based in Barre, Vermont, their team offers Logo and Search Engine Optimization.

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  • MediaExperts.com.ar Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    Freelancer
    Rosario, Argentina

    Services provided

    20% Web Development
    30% UX/UI Design
    20% Web Design +2
    15% Graphic Design
    15% Search Engine Optimization

    Focus Areas

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

    MediaExperts.com.ar, an UX company, was founded in 1998. The small team provides UX/UI Design and Web Design.

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  • ViralMarketing.biz Logotype

    ViralMarketing.biz

    Not yet reviewed

    Undisclosed
    Undisclosed
    Freelancer

    Services provided

    20% Web Development
    20% Search Engine Optimization
    20% Social Media Marketing +3
    20% Web Design
    10% Logo
    10% Pay Per Click

    Focus Areas

    20% JavaScript
    20% ASP.NET
    20% ColdFusion +2
    20% Other programming & scripting languages
    20% PHP

    Small SEO company ViralMarketing.biz, is based in Allen, Texas. The team specializes in Search Engine Optimization and Social Media Marketing.

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  • LlamaKid Logotype

    LlamaKid

    Not yet reviewed

    Undisclosed
    Undisclosed
    Freelancer

    Services provided

    10% Web Development
    30% Blockchain
    20% Blockchain Marketing +4
    10% Custom Software Development
    10% Mobile App Development
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    30% JavaScript
    20% HTML5
    20% PHP +2
    20% Typescript
    10% Objective C

    LlamaKid is a Blockchain company. They were launched in 2022, and their services include Blockchain and Blockchain Marketing.

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  • Digital True Technologies - DTrue Tech Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    20% Search Engine Optimization
    14% Low/No Code Development +8
    10% Custom Software Development
    10% E-Commerce Development
    10% Ecommerce Marketing
    10% Mobile App Development
    5% API Development
    5% IoT Development
    5% Mobile & App Marketing
    1% Web Design

    Focus Areas

    10% JavaScript
    10% Java
    10% Kotlin +10
    10% PHP
    10% SQL
    10% Swift
    10% jquery
    5% ASP.NET
    5% HTML5
    5% Objective C
    5% Python
    5% Visual Basic
    5% XML

    Digital True Technologies - DTrue Tech is a SEO services firm. They are in Noida, India and Richardson, Texas, and their services include Search Engine Optimization and Low/No Code Development.

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  • Entelech Logotype

    Entelech

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    50 - 249

    Services provided

    10% Web Development
    15% Conversion Optimization
    15% Search Engine Optimization +6
    10% Graphic Design
    10% Low/No Code Development
    10% Pay Per Click
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    40% PHP
    20% HTML5 +3
    10% C++
    10% SQL
    10% jquery

    Midsize Conversion Optimization company Entelech, is located in Sydney, Australia and Bangkok, Thailand. The team focuses on Conversion Optimization and Search Engine Optimization.

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  • Sappstudio Logotype

    Sappstudio

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Content Marketing
    10% Digital Strategy +7
    10% E-Commerce Development
    10% Ecommerce Marketing
    10% Mobile App Development
    10% Pay Per Click
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Web Design

    Focus Areas

    10% JavaScript
    20% Python
    10% AJAX +6
    10% HTML5
    10% Other programming & scripting languages
    10% SQL
    10% XML
    10% backbone.js
    10% jquery

    Launched in 2019, Sappstudio, a midsize Digital Strategy company, is headquartered in Calgary, Canada. Their services include Digital Strategy and Social Media Marketing.

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  • Baltic Technology Group Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Rīga, Latvia

    Services provided

    10% Web Development
    10% Application Testing
    10% BI & Big Data Consulting & SI +7
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% DevOps Managed Services
    10% IoT Development
    10% Mobile App Development
    10% Recruiting
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    10% C#
    10% C++ +7
    10% Go
    10% Java
    10% Kotlin
    10% PHP
    10% Python
    10% Ruby
    10% Typescript

    Baltic Technology Group is an user experience company. Founded in 1991, the team provides UX/UI Design and BI & big data consulting & SI. The company is located in Michigan and Rīga, Latvia.

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  • Reddensoft Infotech Pvt. Ltd. Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    50 - 249
    New Port Richey, FL

    Services provided

    10% Web Development
    10% AI Development
    10% Content Marketing +8
    10% Custom Software Development
    10% Graphic Design
    10% Mobile App Development
    10% Social Media Marketing
    10% UX/UI Design
    10% Web Design
    5% Email Marketing
    5% Search Engine Optimization

    Focus Areas

    10% JavaScript
    10% HTML5
    10% Other programming & scripting languages +11
    10% PHP
    10% Python
    10% XML
    5% ASP.NET
    5% C#
    5% C++
    5% Java
    5% Perl
    5% SQL
    5% Swift
    5% jquery

    Reddensoft Infotech Pvt. Ltd., an user experience design company, was established in 2008. The company focuses on UX/UI Design and Graphic Design, and is midsize.

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  • social.tech SIA Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    50% Mobile App Development
    10% Custom Software Development +3
    10% IT Strategy Consulting
    10% Low/No Code Development
    10% Other IT Consulting and SI

    Focus Areas

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

    Headquartered in Rīga, Latvia, social.tech SIA is a mobile application development company. Their services include Mobile App Development and IT strategy consulting.

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  • Syed Web Savvy Logotype

    Syed Web Savvy

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Custom Software Development
    10% E-Commerce Development +7
    10% Ecommerce Marketing
    10% Graphic Design
    10% Logo
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Wearable App Development
    10% Web Design

    Focus Areas

    30% JavaScript
    30% AJAX
    20% PHP +2
    10% C#
    10% HTML5

    Syed Web Savvy is a social media marketing firm. The Highland Park, Australia-based agency was founded in 2018. Their services include Social Media Marketing and Search Engine Optimization.

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  • UKEESS Software House Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    L'viv, Ukraine

    Services provided

    10% Web Development
    10% API Development
    10% Application Testing +7
    10% BI & Big Data Consulting & SI
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% Digital Strategy
    10% E-Commerce Development
    10% Mobile App Development
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    15% Python
    15% Ruby +5
    15% SQL
    15% Swift
    10% ASP.NET
    10% C#
    10% Java

    UKEESS Software House, a Digital Strategy company, provide Digital Strategy and UX/UI Design. They were established in 2004.

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  • Bumblebee Design Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    Freelancer
    Narva, Finland

    Services provided

    10% Web Development
    30% UX/UI Design
    25% Product Design +3
    15% Web Design
    10% Low/No Code Development
    10% Mobile App Development

    Focus Areas

    30% JavaScript
    50% HTML5
    20% C#

    Bumblebee Design, an user experience company, is based in Narva, Finland. Their services include UX/UI Design and Web Design.

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  • F1 Consulting & Services Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Milano, Italy

    Services provided

    10% Web Development
    10% AR/VR Development
    10% Application Management & Support +7
    10% BI & Big Data Consulting & SI
    10% CRM Consulting and SI
    10% Custom Software Development
    10% E-Commerce Development
    10% ERP Consulting and SI
    10% Mobile App Development
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    15% C#
    15% SQL +6
    10% ASP.NET
    10% HTML5
    10% Java
    10% PHP
    10% Python
    10% jquery

    F1 Consulting & Services is an user experience agency. Founded in 2008, their team focuses on UX/UI Design and BI & big data consulting & SI.

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  • DBanerjee Logotype

    Not yet reviewed

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

    Services provided

    20% Web Development
    20% Mobile & App Marketing
    20% Social Media Marketing +2
    20% UX/UI Design
    20% Web Design

    Focus Areas

    20% JavaScript
    45% PHP
    35% jquery

    DBanerjee is a small social media marketing firm headquartered in Folsom, California. The team provides Social Media Marketing and Mobile & App Marketing.

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  • Fitech Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Singapore

    Services provided

    10% Web Development
    30% Custom Software Development
    20% E-Commerce Development +5
    10% AI Development
    10% IT Strategy Consulting
    10% Mobile App Development
    5% API Development
    5% Enterprise App Modernization

    Focus Areas

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

    Fitech is a midsize Hanoi, Vietnam-based custom software development firm. The team provides Custom Software Development and E-Commerce Development.

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  • illustra Solutions Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    50 - 249
    Islamabad, Pakistan

    Services provided

    10% Web Development
    30% Logo
    10% Digital Strategy +5
    10% Low/No Code Development
    10% Mobile App Development
    10% Packaging Design
    10% Product Design
    10% Social Media Marketing

    Focus Areas

    10% JavaScript
    10% C#
    10% C++ +7
    10% HTML5
    10% Java
    10% PHP
    10% Python
    10% Rust
    10% SQL
    10% jquery

    Illustra Solutions is a Logo company. Their team is based in Islamabad, Pakistan and Cambridge, Canada and provides Logo and Web Development.

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  • Xentra Solutions LLC Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    50 - 249
    Malolos, Philippines

    Services provided

    10% Web Development
    10% API Development
    10% Application Testing +7
    10% Custom Software Development
    10% Graphic Design
    10% Low/No Code Development
    10% Mobile App Development
    10% Product Design
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    35% HTML5
    25% SQL +3
    10% C#
    10% PHP
    10% Python

    Xentra Solutions LLC, a web design company, specializes in Web Design and Mobile App Development. The agency is based in Malolos, Philippines and Las Vegas, Nevada.

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  • OpenCircle Logotype

    Not yet reviewed

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

    Services provided

    10% Web Development
    15% AI Development
    15% Cloud Consulting & SI +5
    15% Mobile App Development
    15% Robotics Process Automation
    10% BI & Big Data Consulting & SI
    10% Low/No Code Development
    10% Product Design

    Focus Areas

    10% JavaScript
    10% ASP.NET
    10% C# +7
    10% Go
    10% Java
    10% Kotlin
    10% Python
    10% Redux
    10% SQL
    10% Typescript

    OpenCircle is a data analytics company. The São Paulo, Brazil-based firm was launched in 2020. Their services include BI & big data consulting & SI and cloud consulting & SI.

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  • Smart Commerce SE Logotype

    Not yet reviewed

    $50,000+
    $150 - $199 / hr
    50 - 249
    Jena, Germany

    Services provided

    10% Web Development
    60% E-Commerce Development
    10% DevOps Managed Services +2
    10% Digital Strategy
    10% UX/UI Design

    Focus Areas

    10% JavaScript
    30% Java
    25% PHP +5
    10% Python
    10% SQL
    5% Kotlin
    5% Other programming & scripting languages
    5% Swift

    Smart Commerce SE is an e-commerce development firm. The team focuses on E-Commerce Development and Digital Strategy and is based in Jena, Germany and Böblingen, Germany.

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  • TechGrow Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    50 - 249
    Bedford, TX

    Services provided

    10% Web Development
    15% Custom Software Development
    15% Mobile App Development +7
    15% Search Engine Optimization
    10% Branding
    10% E-Commerce Development
    10% Social Media Marketing
    5% Email Marketing
    5% Marketing Strategy
    5% Pay Per Click

    Focus Areas

    10% JavaScript
    20% SQL
    10% ASP.NET +10
    10% C#
    10% PHP
    5% AJAX
    5% ASP
    5% HTML5
    5% Java
    5% Other programming & scripting languages
    5% Visual Basic
    5% XML
    5% jquery

    TechGrow, a SEO company, is in Bedford, Texas. Founded in 2011, the team specializes in Search Engine Optimization and Custom Software Development.

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  • Samjustified Logotype

    Samjustified

    Not yet reviewed

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

    Services provided

    10% Web Development
    10% Advertising
    10% E-Commerce Development +7
    10% Ecommerce Marketing
    10% Email Marketing
    10% Event Marketing
    10% Market Research
    10% Search Engine Optimization
    10% UX/UI Design
    10% Web Design

    Focus Areas

    10% JavaScript
    10% C#
    10% C++ +7
    10% Java
    10% Objective C
    10% PHP
    10% Python
    10% Ruby
    10% Swift
    10% jquery

    Founded in 2020, Samjustified , a midsize Advertising company, is located in Abeokuta, Nigeria and Abeokuta, Nigeria. Their team focuses on Advertising and Market Research.

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  • RobertPeterson.nl Logotype

    Not yet reviewed

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

    Services provided

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

    Focus Areas

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

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

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  • Render Visions Consulting Logotype

    Render Visions Consulting

    Not yet reviewed

    Undisclosed
    Undisclosed
    Freelancer

    Services provided

    10% Web Development
    30% Search Engine Optimization
    20% Pay Per Click +3
    20% Web Design
    10% Social Media Marketing
    10% Video Production

    Focus Areas

    30% JavaScript
    40% PHP
    30% HTML5

    Render Visions Consulting, a SEO company, focuses on Search Engine Optimization and Pay Per Click. The company is located in Henderson, Nevada.

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Ability to deliver
Focus
Clutch Leaders Matrix

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

1 ImageX
2 xfive
3 GeekyAnts
4 Flowout
5 Brainhub
6 The Software House
7 PowerGate Software
8 HTMLPanda
9 FocusReactive
10 Arcanys
11 WPWeb Infotech
12 Softonix
13 PopArt Studio
14 Lizard Global
15 Experion Technologies

List of the Top 15 JavaScript Development Companies

  1. ImageX Logotype

    ImageX

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

    Ability to deliver

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

    35.9/40.0
    19/20 Reviews
    10/10 Clients & Experience
    6.9/10 Market Presence

    Service focus

    60% Web Development
    50% JavaScript
    40% Other
    View Profile Visit Website
  3. GeekyAnts Logotype

    GeekyAnts

    $10,000+
    $25 - $49 / hr
    250 - 999
    Bengaluru, India

    Ability to deliver

    37.2/40.0
    20/20 Reviews
    10/10 Clients & Experience
    7.2/10 Market Presence

    Service focus

    20% Web Development
    40% JavaScript
    80% Other
    View Profile Visit Website
  4. Flowout Logotype

    Flowout

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

    Ability to deliver

    35.1/40.0
    20/20 Reviews
    10/10 Clients & Experience
    5.1/10 Market Presence

    Service focus

    40% Web Development
    100% JavaScript
    60% Other
    View Profile Visit Website
  5. Brainhub Logotype

    Brainhub

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

    Ability to deliver

    34.1/40.0
    18.4/20 Reviews
    10/10 Clients & Experience
    5.7/10 Market Presence

    Service focus

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

    The Software House

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

    Ability to deliver

    34.5/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    5.7/10 Market Presence

    Service focus

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

    PowerGate Software

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

    Ability to deliver

    35.9/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    7.1/10 Market Presence

    Service focus

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

    HTMLPanda

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

    Ability to deliver

    32.8/40.0
    16.2/20 Reviews
    10/10 Clients & Experience
    6.6/10 Market Presence

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  9. FocusReactive Logotype

    FocusReactive

    $10,000+
    $50 - $99 / hr
    10 - 49
    London, England

    Ability to deliver

    34.8/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    6.2/10 Market Presence

    Service focus

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

    Arcanys

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

    Ability to deliver

    35.6/40.0
    20/20 Reviews
    10/10 Clients & Experience
    5.6/10 Market Presence

    Service focus

    30% Web Development
    20% JavaScript
    70% Other
    View Profile Visit Website
  11. WPWeb Infotech Logotype

    WPWeb Infotech

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

    Ability to deliver

    37/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    7.4/10 Market Presence

    Service focus

    45% Web Development
    10% JavaScript
    55% Other
    View Profile Visit Website
  12. Softonix Logotype

    Softonix

    $5,000+
    $25 - $49 / hr
    50 - 249
    Warszawa, Poland

    Ability to deliver

    32.3/40.0
    17.2/20 Reviews
    10/10 Clients & Experience
    5.1/10 Market Presence

    Service focus

    70% Web Development
    50% JavaScript
    30% Other
    View Profile Visit Website
  13. PopArt Studio Logotype

    PopArt Studio

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

    Ability to deliver

    35.6/40.0
    19.6/20 Reviews
    10/10 Clients & Experience
    6/10 Market Presence

    Service focus

    35% Web Development
    40% JavaScript
    65% Other
    View Profile Visit Website
  14. Lizard Global Logotype

    Lizard Global

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

    Ability to deliver

    34.9/40.0
    19.8/20 Reviews
    10/10 Clients & Experience
    5.1/10 Market Presence

    Service focus

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

    Experion Technologies

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

    Ability to deliver

    33.6/40.0
    16.8/20 Reviews
    10/10 Clients & Experience
    6.8/10 Market Presence

    Service focus

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

    INOXOFT

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

    Ability to deliver

    35.5/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    6.7/10 Market Presence

    Service focus

    40% Web Development
    35% JavaScript
    60% Other
    View Profile Visit Website
  17. Cleveroad Logotype

    Cleveroad

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

    Ability to deliver

    36.2/40.0
    20/20 Reviews
    10/10 Clients & Experience
    6.2/10 Market Presence

    Service focus

    30% Web Development
    15% JavaScript
    70% Other
    View Profile Visit Website
  18. Povio Logotype

    Povio

    $10,000+
    $50 - $99 / hr
    50 - 249
    San Francisco, CA

    Ability to deliver

    32.6/40.0
    18.8/20 Reviews
    8.3/10 Clients & Experience
    5.5/10 Market Presence

    Service focus

    55% Web Development
    45% JavaScript
    45% Other
    View Profile Visit Website
  19. Sigma Software Group Logotype

    Sigma Software Group

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

    Ability to deliver

    36.3/40.0
    17.6/20 Reviews
    10/10 Clients & Experience
    8.8/10 Market Presence

    Service focus

    15% Web Development
    18% JavaScript
    85% Other
    View Profile Visit Website
  20. Xmartlabs Logotype

    Xmartlabs

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

    Ability to deliver

    33.8/40.0
    18.6/20 Reviews
    10/10 Clients & Experience
    5.2/10 Market Presence

    Service focus

    50% Web Development
    35% JavaScript
    50% Other
    View Profile Visit Website
  21. Incora Logotype

    Incora

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

    Ability to deliver

    33.1/40.0
    17.8/20 Reviews
    10/10 Clients & Experience
    5.3/10 Market Presence

    Service focus

    40% Web Development
    50% JavaScript
    60% Other
    View Profile Visit Website
  23. Adchitects Logotype

    Adchitects

    $25,000+
    $50 - $99 / hr
    10 - 49
    Poznań, Poland

    Ability to deliver

    33.8/40.0
    17/20 Reviews
    10/10 Clients & Experience
    6.8/10 Market Presence

    Service focus

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

    Techuz InfoWeb Pvt. Ltd.

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

    Ability to deliver

    31.9/40.0
    16.4/20 Reviews
    10/10 Clients & Experience
    5.5/10 Market Presence

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  25. SpdLoad Logotype

    SpdLoad

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

    Ability to deliver

    31.9/40.0
    16.2/20 Reviews
    10/10 Clients & Experience
    5.7/10 Market Presence

    Service focus

    45% Web Development
    50% JavaScript
    55% Other
    View Profile Visit Website
  26. XWP Logotype

    XWP

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

    Ability to deliver

    31.9/40.0
    15.8/20 Reviews
    10/10 Clients & Experience
    6.1/10 Market Presence

    Service focus

    60% Web Development
    45% JavaScript
    40% Other
    View Profile Visit Website
  27. Toptal Logotype

    Toptal

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

    Ability to deliver

    33.9/40.0
    17.2/20 Reviews
    9.9/10 Clients & Experience
    6.8/10 Market Presence

    Service focus

    15% Web Development
    25% JavaScript
    85% Other
    View Profile Visit Website
  28. unicrew Logotype

    unicrew

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

    Ability to deliver

    33.8/40.0
    18.8/20 Reviews
    10/10 Clients & Experience
    5/10 Market Presence

    Service focus

    30% Web Development
    50% JavaScript
    70% Other
    View Profile Visit Website
  29. Konstant Infosolutions Logotype

    Konstant Infosolutions

    $5,000+
    $25 - $49 / hr
    250 - 999
    Jaipur, India

    Ability to deliver

    37.4/40.0
    20/20 Reviews
    10/10 Clients & Experience
    7.4/10 Market Presence

    Service focus

    10% Web Development
    25% JavaScript
    90% Other
    View Profile Visit Website
  30. Vardot Logotype

    Vardot

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

    Ability to deliver

    35.1/40.0
    17.8/20 Reviews
    10/10 Clients & Experience
    7.3/10 Market Presence

    Service focus

    60% Web Development
    20% JavaScript
    40% 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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