Looking for a top JavaScript development company?

Developers use JavaScript to make web pages responsive and interactive. JavaScript is a text-based programming language used in web development, typically alongside CSS and HTML. Some common use cases for JavaScript are menus, animations, or interactive maps.

That's why we've created this list of the best JavaScript developers for you to review. Read through company descriptions, former clients, and notable projects to find the best fit for your business. (And, if you want personalized recommendations, tell us about your project.)

List of the Best JavaScript Development Companies

  • 121
    $10,000+
    50 - 249 Employees
    Gurugram India

    Classic Informatics is an agile web development company based in New Delhi, India with offices in Sydney, London, and Chandigarh, India. Founded in 2002, they have a team of about 250 that serve enterprise, midmarket, and small businesses in the IT and healthcare industries. They specialize in web development, custom software development, mobile app development, and BI and big data services.

    Clients
    Siemens
    Queens Park Rangers F.C
    Udenom Banken
    Industries
    Notable Project

    Classic Informatics took over an app development project for an online gift service company. They developed both Android and iOS apps and made improvements to their website in a short amount of time.

    "They achieved what the other company couldn’t, and in a third of the time...It was very effective and very fast." — CEO, Online Gift Service

  • Tell us about your project

    NEED HELP SELECTING A COMPANY?

    Based on your budget, timeline, and specifications we can help you build a shortlist of companies that perfectly matches your project needs. Schedule a free consultation with a Manifest Analyst.

  • 122
    $25,000+
    250 - 999 Employees
    Lake Oswego OR

    Founded in 2009, Unosquare, LLC is headquartered in Lake Oswego, Ore. with other locations in Guadalajara, Mexico, and Belfast, U.K. With more than 600 employees, they provide software testing and development services, combined with their staff augmentation services to meet software engineering needs, using nearshore development professionals.

    Clients
    Vesta
    Harvard Business Publishing
    Foundation Medicine
    Edwards Lifesciences
    Industries
    Notable Project

    A caller ID company hired Unosquare, LLC to provide software engineering and QA resources. Assisting on various projects, Unosquare provided daily support in all aspects of application development.

    "I have been most impressed with the caliber of the technical resources provided by Unosquare." – Senior Director Software Engineering, Caller ID Company

  • 123
    $5,000+
    250 - 999 Employees
    London United Kingdom

    SPD Group is an IT and development company in London, United Kingdom; Kyiv and Cherkasy, Ukraine; and Tel Aviv, Israel. Founded in 2006, they have about 16 employees that serve mostly midmarket and small-business clients in the business, financial, and IT sectors. Services include custom software development, AI, and IoT development.

    Clients
    Home Hub
    HawkCommerce
    PitchBook Data
    Industries
    Notable Project

    SPD Group developed an app for a real estate platform startup. Their team built an entire infrastructure and created versions for iOS and Android. The platform has received positive feedback and exceeds expectations.

    “Not only do they do great work, communicate really well, and document incredibly well.” – Founder & CEO, Real Estate App Startup

  • 124
    $5,000+
    2 - 9 Employees
    Doylestown PA

    Pedrera is a web development firm headquartered in Doylestown, Pa. Founded in 1997, Pedrera specializes in web development, web design, and UX/UI design. Pedrera has a small team of around 5 people.

    Clients
    Philadelphia Gas Works
    University of Pennsylvania
    Tierney Communications
    Johnson & Johnson
    Industries
    Notable Project

    Pedrera built a new website for nonprofit organization, focusing on improving reliability, UX/UI design, and searchability. The website also involved an e-commerce component to sell tickets to the nonprofit organization's signature event. The client appreciated that the new website was able to handle over two million visitors per year and noted that customer service received fewer website-related calls following the new website's launch.

    "Not only are the ticket sales skyrocketing, we’re also getting many hits from all kinds of visitors." – Associate Director of Technology Services, Nonprofit Organization 

  • 125
    Undisclosed
    250 - 999 Employees
    Mountain View CA

    Emerline is a software engineering company headquartered in Mountain View, Calif., with an office in Minsk, Belarus. Since 2011, their team of 93 has offered services in custom software, web, and mobile app development to clients ranging from startups to large firms. They have worked in various industries in the past, such as IT, financial services, and business services. They are also familiar with Django and .NET, among other frameworks.

    Industries
    Notable Project

    Emerline provided CRM-based solutions for an e-commerce development firm. Emerline primarily helped out on customer segmentation, as the firm's customers used Magento and Shopify platforms. Emerline used Python, MySQL, and JavaScript to develop said solutions. The project streamlined the firm's processes.

    "Everything they do is done nicely, and without any delays or mess-ups." - CMO, E-commerce Development Firm

  • 126
    $50,000+
    50 - 249 Employees
    Los Angeles CA

    UruIT is a web and mobile app development firm based in Montevideo, Uruguay with offices in Miami and Medellin, Colombia. Their 50+ near-shore team has created thousands of empowering digital products since 2007.

    Clients
    Coca-Cola
    The Cleveland Cavaliers
    Kia
    Microsoft
    Industries
    Notable Project

    UruIT developed a survey platform for market research and were later brought on as a permanent development partner for their excellent work. The team excelled at UX design, backend coding, and system integration, effectively boosting productivity and efficiency throughout the collaboration.

    “UruIT has become a true member of our team … laid-back, fun, and not at all stuffy. Everyone has great English skills as well.” – Senior Director, Business Intelligence Company

  • 127
    $25,000+
    50 - 249 Employees
    San Francisco CA

    eTeam is a software development firm based in Kviv, Ukraine. Founded in 2010, eTeam has 30 employees and primarily serves small businesses in the financial services and retail sectors. They mostly work on payment and consumer relations platforms that require custom software development, app development, and web development. 

    Clients
    Walmart
    GameStop
    7-11
    China Mobile
    Industries
    Notable Project

    A financial technology and services firm hired eTeam to develop a platform for simplifying payments. eTeam delivered a solution that uses barcodes for bill payments and deposits. Implementing this technology enables customers to use mobile phones and simplify the way they manage their finances. The client praised their dedication to the project and was especially impressed by their technical acumen.

    "eTeam stands behind what they produce and truly believes in what they do. Furthermore, they're flexible and understanding when things change." –Director, Financial Services Firm

  • 128
    $5,000+
    10 - 49 Employees
    Kraków Poland

    1000software is a software house based in Krakow, Poland. The software house, founded in 2008, has a team of more than 20 that provides web development, UX/UI design, IT strategy consulting, custom software development, mobile app development, e-commerce development services. 1000software serves mid-market and other-sized companies in the advertising & marketing, business services, consumer products & services, education, and e-commerce industries. 

    Clients
    InPost
    Wokas
    ROSA Group
    University of Szczecin
    Industries
    Notable Project

    A publishing house hired 1000software to design a new website to accomodate new needs. 1000software analyzed the needs of the publishing house, their organization structure, and the tools that they are currently using. They then worked in Symfony and PHP to develop the website and integrated it to the publishing house's CRM and other tools. 1000software completed the project and the website they delivered has served the publishing house for years. They continue to provide technical support.

    "Traffic on our site has grown even 10 fold and we still are having a perfectly smooth experience for each user." - Marketing Communication Manager, Publishing House

  • 129
    $100,000+
    50 - 249 Employees
    Hingham MA

    Founded in 2010, DockYard is a digital product agency in Boston that focuses on custom software, mobile and web app design and development. DockYard caters to startups, mid-market, and enterprise clients nationwide and also offer UX, staff augmentation, and training. Their 80-person team develops using Ember, Elixir, and Phoenix. 

    Clients
    Apple
    Nasdaq
    Netflix
    ZipCar
    Industries
    Notable Project

    Dockyard developed a web app for an e-learning company, from front-end development to visual design to implementation. Their work ethic, creativity, collaboration, and overall dedication to a quality product was evident to the client.

    "In talking with DockYard, we found them to be brilliant. That's one of the real strengths of DockYard. … They're a major player in the development community in Boston and the East Coast. Their reputation is amazing in terms of the contributions they make to the community." – Former Sr. Software Engineer, E-learning Provider

  • 130
    Undisclosed
    50 - 249 Employees
    Minsk Belarus

    XB Software is a full-service development agency headquartered in Minsk, Belarus. Founded in 2008, XB Software has grown to over 150 employees. XB Software focuses on both internal and client-facing business applications, providing web development, mobile app development, and custom software development. It provides these services to clients in industries such as logistics and information technology. XB Software offers custom development for all major platforms.

    Clients
    XB Software works under non-disclosure agreements. Its clients come from various industries;including medicine
    consumer technology
    business services;and more.
    Industries
    Notable Project

    An educational technology firm focused on special-needs education solutions worked with XB software to build a compliance-oriented web platform. XB Solutions created two web platforms that replaced a paperwork system and have been well-received by educators and regulators alike.

    "They [XB Solutions] performed great. We’re very pleased with them, and the development continues today. We’ve been very pleased, and our relationship has grown over four years." - President, Education Software Company

  • 131
    $25,000+
    50 - 249 Employees
    Gdynia Poland

    SPEEDNET is a we development and mobile app development firm based in Gdynia, Poland. Founded in 2000, their team of 120 serves clients in the financial services and business services sectors. Services include JavaScript, Swift, and PHP development.

    Clients
    POP Pankki
    Alior Bank
    Getin Bank
    Telia Company
    Industries
    Notable Project

    SPEEDNET provided iOS and Android development services for an app startup. They worked in React Native based on client specifications. The client is very happy with the development process thus far.

    “The team is transparent, efficient, and communicative.” – CEO, App Startup

  • 132
    $50,000+
    250 - 999 Employees
    Naples FL

    Intetics Inc. is a technology company headquartered in Naples, FL, with offices in Minsk, Belarus, Wilmette, Ill., Krakow, Poland and Kharkiv, Ukraine. Founded in 1995, Intetics' team of 474 employees provides small, midmarket, and enterprise businesses with a variety of different services such as custom software development, mobile app development, and application management & support, among others.

    Clients
    Encyclopaedia Britannica
    Cengage Learning
    Nokia
    Symantec
    Industries
    Notable Project

    Intetics worked with this publishing company to assist with content acquisition and development, while also building custom software solutions for the client's content. Before Intetics' help, the client's editorial update would follow a two-year cycle, which now only takes around 6-8 months, and it does so at a lower cost.

    "Intetics' role is a critical part of our workflow. They’ve proven to be agile, highly collaborative, and very responsive." – Product Manager, Publishing Company

  • 133
    $5,000+
    50 - 249 Employees
    SAN JOSE CA

    Founded in 2011, Bytes Technolab is a software development company that specializes in eCommerce, web, and mobile app development. Headquartered in N.J., the team of 44 works with mid-market businesses in the e-commerce, consumer services, and real estate industries. 

    Clients
    Ragnar
    Celebration Giftware
    Keyolo
    Industries
    Notable Project

    Bytes Technolab worked with a social media marketing company on software development to create and enhance existing features for the client’s platform. They worked on e-commerce capability, created new widgets and plug-ins, and provided front-end and back-end development. The client saw immediate results and was happy with the growth. 

    “Customer growth has expanded rapidly; our e-commerce margins have doubled in size since Bytes Technolab’s solution launched. Our customers have also reported large gains since we added the e-commerce feature.” - Founder, Social Media Marketing company
     

  • 134
    $5,000+
    50 - 249 Employees
    Kyiv Ukraine

    Founded in 2009, MindK is a software development company that specializes in web, custom software, and mobile app development. Their team of 56 employees, based in San Francisco, partners with small business and midmarket clients in the financial services, advertising, and media industries.

    Clients
    Converze
    CHOO
    CEMAsys
    Industries
    Notable Project

    MindK worked to expand a publishing house’s consumer facing cloud platform. They used MongoDB, PHP, and JavaScript to do data management and frontend development work to expand the platform. The client’s existing customers were happy with the improvements to the product, and the client saw potential to continue expanding the service.

    “The most impressive thing is their commitment to the project, as well as their guarantee of the quality of work.” – President, Publishing House

  • 135
    $5,000+
    50 - 249 Employees
    Taganrog Russia

    Founded in 2018, Fusion Team is a Russia based development company located in the city of Taganrog. Their team of 13 provides web design, UX/UI design, web development, and mobile app development to clients. 

    Clients
    Sidekiker
    Found.ee
    HR Network
    Industries
    Notable Project

    Fusion Team partnered with a recruiting company to design and develop a talent search platform for the client. They provided the client with a new website, responsive design, automation of all manual processes, and QA of candidate profiles. The client was impressed with the features Fusion Team brought to their site. 

    “Their communication, reliability, speed of deliver, and enthusiasm was impressive. The team was really dedicated, involved, and interested in our business.” –– Senior Tech Recruiter, Recruiting Company

  • 136
    $50,000+
    10 - 49 Employees
    Chicago IL

    Red Foundry is a mobile application design and development consulting firm based in Chicago. Founded in 2009, they create native and cross-platform mobile applications for the iOS and Android platforms. The team provides UX/UI product design, full-stack application development (mobile apps, APIs and backend) and proactive post-launch support and maintenance services. Red Foundry’s clients include entrepreneurs and startups, small companies, and mid-market corporations.

    Clients
    Clark Brands
    Galaxy Digital
    Travelliance
    Reader’s Digest
    Industries
    Notable Project

    A photography agency needed a mobile app and came to Red Foundry for their expertise. The app allows anyone to locate photographers all over the city of Chicago. They’re still testing the impact of the app for on-demand users.

    “They [Red Foundry] were very organized and worked overtime. They made the process easy to understand, so I can focus on managing the company and not the IT part.” – CEO, Photography Agency

  • 137
    $10,000+
    2 - 9 Employees
    Fair Lawn NJ

    Cantilever is a digital agency, established in 2001 in Fair Lawn, N.J. Their team of 4 employees offers services in web design, web development, branding and marketing strategy.

    Clients
    Rustic Pathways
    American Bible Society
    TCN Worldwide
    Flatiron School
    Industries
    Notable Project

    Cantilever delivered new UX design and e-commerce for a website for a creative agency. Their Linux-based backend supported a standard HTML, CSS, and Javascript frontend. They were responsible for interaction design and animation. The client appreciated their communication and organization.

    “Their code is clean, and they have an amicable, organized approach. Contract negotiations with them were flexible; they’re particular about their product, and they set themselves a high standard.” – Co-Director of Interactive Production, Creative Agency
     

  • 139
    $5,000+
    50 - 249 Employees
    New York NY

    Although they specialize in e-commerce and web development, End Point also creates custom software and is an expert on enterprise security. Founded in 1995 in New York City, the team of 50+ employees serves mid-market and small businesses across a variety of industries.

    Clients
    Disney
    Google
    NASA
    Smithsonian
    Industries
    Notable Project

    End Point was hired by a tourism company to help with e-commerce web app hosting, security, and hardware maintenance. Since working with End Point, the client has experienced all-time highs for website traffic.

    “End Point is very transparent about what they're working on in terms of providing complete details. We don't have any surprises at the end of the month as a result. They're very dependable, delivering what they promise every time.” – Director of E-Commerce, Tourism Company

  • 140
    $1,000+
    250 - 999 Employees
    New York NY

    CSSChopper is a conversion service provider founded in 2009. Based in Noida, India, with an office in the United States, the team of five specializes in web development, e-commerce development, and custom software development. They primarily serve midmarket clients in the business services, government, and transportation industries. 

    Clients
    intel
    hp
    Yamaha
    CISCO
    Industries
    Notable Project

    CSSChopper developed a PHP website for a real estate startup. The team designed the interface, along with various pages and features. They also created content. Overall, the client was impressed with the team's work. 

    "I’m quite pleased with the service CSSChopper provided my business. From their communication style to development expertise, everything was perfect." — Lead Manager, Real Estate Startup

  • 141
    $25,000+
    10 - 49 Employees
    Sarratt United Kingdom

    Clock Limited is a digital design and build company. Founded in 1997, the company is headquartered in Kings Langley, United Kingdom. They have a team of around 35 employees who focus on custom software, web, and mobile app development.

    Clients
    International Tennis Federation
    Wall Street Journal
    Leicester Tigers
    The Sun
    Industries
    Notable Project

    Clock Limited redesigned a website for a news and media outlet. The team also built a custom CMS for the client. The site forms the foundation of the internal team's business.

    "The CMS is fantastic and they have been very receptive to our ideas, no matter how big or small." – Site Editor, News Outlet

  • 142
    $10,000+
    50 - 249 Employees
    London United Kingdom

    Propeller is a web design and development company that was founded in 2000. Headquartered in London, with another office in New York, they have a team of over 55. They specialize in e-commerce development, email marketing, web design, and SEO or clients in the hospitality, leisure, consumer products, and retail industries.

    Clients
    Hippo Inns
    JW Lees
    KOIBIRD
    RXBAR
    Industries
    Notable Project

    Propeller developed and designed a creative website for a photography studio. The team also performed digital marketing services, crafting keywords. SEO campaigns improved search results and mobile usage.

    "Propeller created a platform that represents me, my taste and artistic level."– Founder, Photography Studio

  • 143
    $5,000+
    50 - 249 Employees
    Kharkiv Ukraine

    Artjoker Software is a development company based in Kharkiv, Ukraine with additional offices in Los Angeles and New York City. Since 2006, their team of 107 has been specializing in web development, mobile app development, conversion optimization, and marketing strategy for small businesses.

    Clients
    Esteem Production
    Nutrition Factory
    Starbar
    Intela;Education
    Industries
    Notable Project

    Artjoker Software developed a mobile application for an athletic training program. Through building from an existing alpha, the agency was able to improve functionality and add a backend panel. The program is looking to continue their partnership with Artjoker Software.

    "Although we haven’t launched the iOS yet, in terms of what I envisioned for this app and what it actually looks like, I couldn't be happier with it." — Founder, Athletic Training Program 

  • 144
    $25,000+
    50 - 249 Employees
    New York City NY

    Infinum is a software development company in San Francisco, CA. The 50+ team has equal experience in mobile and web development. They work with clients from a variety of industries, including business and financial services and automotive.

    Clients
    Bayer
    Samsung
    Universal Music Group
    T-Mobile
    Industries
    Notable Project

    Infinum rebuilt a flight booking app for a startup. The original app was extremely buggy and the company needed further support. One feature Infinum developed allowed customers to sync their calendars to find flights that work around their schedule.

    “While many agencies limit your choices, it was quite different with Infinum. They were clear and upfront about what resources we were getting and why and offered us options, which was really nice.” – Senior Project Manager, App Startup

  • 145
    $50,000+
    10 - 49 Employees
    Chicago IL

    Caxy Interactive is a web design and development agency located in Chicago, IL. Since 1999, the agency and its team of 10+ specialize in creating better digital experiences for their clients through web development, software development, and enterprise content management services. 

    Clients
    Sifma Foundation
    The Popcorn Factory
    Experian
    Northwestern University
    Notable Project

    A job platform that helps women return to the workforce hired Caxy Interactive to upgrade its website. Along with small development tasks, Caxy Interactive upgraded the company's job board and employer portal. The feedback has been positive regarding the features and looks of the website. 

    "[Caxy Interactive] has taken it to the next level — [our website] looks different and much more polished. I love their creative team and their graphics team who did a great job in that way." – Founder, Job Finding Platform

  • 146
    $5,000+
    10 - 49 Employees
    Reston VA

    Headquartered in Reston, Va., Darwin is a digital experience agency that was founded in 2011. Their team of 10+ specializes in web design, UX/UI design, and web development for clients in the nonprofit, business services, and government industries. 

    Clients
    Audi
    VTS
    Namely
    Seagate
    Industries
    Notable Project

    An aircraft services company needed an updated website for their business. The team added new features and maintains the WordPress platform. They also created a ticketing system for the company. They exceeded expectations with their quality service. 

    "We've seen an uptick in leads translating to the website since working with them." –CTO, Aircraft Services Company

  • 147
    $10,000+
    50 - 249 Employees
    Kharkiv Ukraine

    QArea is a development agency with offices in Kharkov, Ukraine and Beverly Hills, Calif. Since the company's founding in 2001, their team has grown to 211 employees. QArea specializes in web development, custom software development, and application testing. Most of their clients are small and mid-sized businesses.

    Clients
    SkyHook
    The Huffington Post
    Dashlane
    Perx
    Industries
    Notable Project

    QArea developed an e-commerce platform for a tech firm. The challenging site build necessitated integrating Oracle and PeopleSoft. The client appreciated that QArea's developers were flexible and contributed high-quality work. 

    "The system has been great, profitable, and we are very happy with it. It has had no downtime, and there are no issues with it whatsoever."–President, Tech Firm

  • 148
    $5,000+
    10 - 49 Employees
    Kyiv Ukraine

    Frontmen is a development agency headquartered in Kiev, Ukraine. With 11 employees, the agency has been specializing in web design and development, and UX/UI design for small and mid-sized businesses since 2000. 

    Clients
    McDonald's
    LG
    Acura
    Honda
    Industries
    Notable Project

    Frontmen developed a web-based platform for an insurance agency. After that, they developed an e-commerce platform. The websites have positively impacted the company's image. 

    "Frontmen provided not only professional work and support throughout the project but also useful ideas about the best ways to develop our site and e-commerce shop." – Head of Online Sales, Insurance Agency

  • 149
    $10,000+
    10 - 49 Employees
    Montevideo Uruguay

    Bixlabs is a software development agency based in Montevideo, Uruguay with an additional office in Houston. The company was founded in 2014 and now employs about 30 employees. Bixlab's services include web application development, mobile development for Android and iOS, and UI/UX design.

    Clients
    REMAX
    CBRE
    Trainsmart
    Zeco Energy
    Industries
    Notable Project

    Bixlabs managed all aspects of development in building a mobile app for a nutrition-focused startup. The client had no technical resources and needed a sophisticated platform to accommodate their desired features. Bixlabs built the application from scratch, using Node.js on the backend and Angular on the frontend. The client praised Bixlabs' technical documentation, which has allowed the client to fully utilize the app's complexity.

    "They are probably one of the best project management groups that I’ve worked with, specifically Lucrecia Gonzalez [Project Manager, Bixlabs] who we worked with the most. She’s fantastic." — Founder, Nutrition App Startup

  • 150
    $10,000+
    10 - 49 Employees
    Medellín Colombia

    Parrolabs is a development company based in Colombia with offices in Medellin and Bogota. Founded in 2015, the team of 5 provides web and mobile app development so companies of all sizes.

    Clients
    National Geographic Society
    Mystore
    Dom & Tom
    AnsleyRDGroup
    Industries
    Notable Project

    Parrolabs built an e-commerce platform for an advising firm’s client.  The team used Ruby on Rails and assisted with other user stories. They scaled the platform down to an MVP to allow for future additions to the product.

    "We have a completed custom e-commerce app." — Owner/VP, Business Dev Advising Firm

Tell us about your project
NEED HELP SELECTING A COMPANY?

Based on your budget, timeline, and specifications we can help you build a shortlist of companies that perfectly matches your project needs. Schedule a free consultation with a Manifest Analyst.

TELL US ABOUT YOUR PROJECT