Top 100 JavaScript Development Companies in San Francisco
The Best of October 2026Looking for a top JavaScript developer in San Francisco?
If you're hiring a JavaScript developer to help you build or update a website that's responsive and interactive, consider the pros and cons of JavaScript as a programming language. Advantages include its speed because it's executed on the client-side; reduction in server load; and diverse functionality. Disadvantages to consider include security such as bugs on the client-side.
To assist you in your search for a partner, we’ve compiled this list of the top JavaScript development agencies in San Francisco. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best San Francisco JavaScript Developers
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91$5,000+10 - 49 employeesSan Francisco, CADesignYard is a web development company. They are based in San Francisco, California, and their services include Web Development and E-Commerce Development.Read More
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92$10,000+2 - 9 employeesSan Francisco, CASmall software development company UI Flow, is located in San Francisco, California. The team provides Custom Software Development and Enterprise App Modernization.Read More
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93Undisclosed2 - 9 employeesSan Francisco, CAFounded in 2026, Exovara Labs LLC is a small San Francisco, California-based website development company. Their team specializes in Web Development and Custom Software Development.Read More
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94$5,000+2 - 9 employeesSan Bruno, CAOldmann is a small user experience design agency established in 2019. Their services include UX/UI Design and Mobile App Development.Read More
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95$1,000+2 - 9 employeesSan Francisco, CAHeadquartered in San Francisco, California, cxurious is a small Digital Strategy company. Their services include Digital Strategy and Search Engine Optimization.Read More
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96$1,000+2 - 9 employeesSan Leandro, CAFounded in 2023, Frank Dev LLC is a branding company. Located in San Leandro, California, the team specializes in Branding and BI & big data consulting & SI.Read More
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97$1,000+10 - 49 employeesSan Francisco, CAWebsite development firm NovaFlow Studio is headquartered in. The small company was founded in 2022. Their services include web development.Read More
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98$1,000+2 - 9 employeesSan Francisco, CAFounded in 2018, Cozmot Inc is a small web development company. Their team offers Web Development and E-Commerce Development.Read More
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99$5,000+50 - 249 employeesSan Francisco, CAEstablished in 2009, TechnoBrains Business Solutions LLP is a midsize artificial intelligence firm headquartered in Ahmedabad, India and San Francisco, California. Their services include Artificial Intelligence, Custom Software Development, Web Development, Mobile App Development, and more.Read More
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100Undisclosed50 - 249 employeesSan Francisco, CAThoughtMinds is a Generative AI company. The team offers Generative AI and Artificial Intelligence, and the company is in San Francisco, California and Navi Mumbai, India.Read More
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101$10,000+10 - 49 employeesBerkeley, CADeCodinate Inc is a Berkeley, California-based mobile application development firm. They provide Mobile App Development and Web Development.Read More
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102$1,000+50 - 249 employeesSan Francisco, CAGet The Web Build is a branding agency. They are based in San Francisco, California and have midsize team of experts. Their services include Branding and Web Design.Read More
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103$5,000+50 - 249 employeesSan Mateo, CABased in San Mateo, California and Lucknow, India, STPL IT Solutions is a web design agency. They offer Web Design and UX/UI Design.Read More
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104$5,000+10 - 49 employeesSan Francisco, CAProWeb, Inc is a San Francisco, California-based SEO agency. Established in 2023, the team offers Search Engine Optimization and Web Development.Read More
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105$5,000+2 - 9 employeesBerkeley, CARead More
NRGsurf is a software development company. They specialize in custom software development, web development, mobile app development, IoT development, and more and were founded in 2019. The agency is based in Hallbergmoos, Germany.
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106$1,000+2 - 9 employeesSan Bruno, CALocated in San Bruno, California, Ovalweb is a small software development company. Their services include Custom Software Development and Web Design.Read More
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107$5,000+10 - 49 employeesEmeryville, CARead More
Horizon Labs is a small Irvine, California-based web development company. They focus on Web Development, Custom Software Development, Artificial Intelligence, IT staff augmentation, and more and were founded in 2019.
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YuraHealth.com Kidsy.co Rarewaters.com Flairlabs.ai (YC S22)Industries
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108Undisclosed10 - 49 employeesSan Francisco, CAFounded in 1987, Langtech is a small IT managed services company. Their services include IT managed services and Custom Software Development.Read More
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109$25,000+50 - 249 employeesSan Francisco, CAOURACO is a Marketing Strategy company established in 2008. The team provides Marketing Strategy and Digital Strategy.Read More
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110$10,000+2 - 9 employeesAlameda, CAEntexture is a custom software development company. The Alameda, California-based company was launched in 2017. Their team provides Custom Software Development and IoT development.Read More
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111$1,000+2 - 9 employeesEl Sobrante, CANerd Crossing, an IT managed services company, provide IT managed services and Cybersecurity. They were established in 2010.Read More
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112$1,000+10 - 49 employeesOakland, CAIn Mohali, India and Oakland, California, Futurista Soft Private Limited is a SEO services firm. They specialize in Search Engine Optimization and UX/UI Design.Read More
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113Undisclosed10 - 49 employeesSan Francisco, CARivi is an AI Agents company. Established in 2017, their team offers AI Agents and Custom Software Development.Read More
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114$75,000+50 - 249 employeesWalnut Creek, CAMira Commerce, an e-commerce development company, was founded in 2004. Their midsize team is in Walnut Creek, California; Santa Fe de la Vera Cruz, Argentina and Warszawa, Poland. Their services include E-Commerce Development, Search Engine Optimization, UX/UI Design, and Web Development.Read More
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DESTACOIndustries
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115Undisclosed2 - 9 employeesOakland, CARead More
HyperArts is a website design and development company based in San Francisco, CA. HyperArts' intimate team of nearly 10 people specializes in website design, development, and maintenance, as well as UX/UI design for WordPress and Drupal sites. They mainly serve small business clients.
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Crossroads Trading Co.Industries
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116$25,000+10 - 49 employeesPalo Alto, CARead More
Exemplifi is a development agency in Palo Alto, Calif. Founded in 2018, they have about 6 employees that serve clients in a variety of sectors. Their services are specialized in web development.
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FOSSIndustries
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117$5,000+Freelancer employeesSan Francisco, CASiteAppy LLC is an Enterprise App Modernization company. The team focuses on Enterprise App Modernization and Custom Software Development and is in San Francisco, California.Read More
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118$10,000+2 - 9 employeesSan Francisco, CAGet It Built is an application development company established in 2017. Their team focuses on Mobile App Development and Web Development.Read More
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119$5,000+50 - 249 employeesFremont, CAEstablished in 2006, Elsner Technologies Pvt Ltd is a custom software development company. Their midsize team is based in Lakeland, California; Ahmedabad, India and Fremont, California. Their services include Custom Software Development, E-Commerce Development, Search Engine Optimization, Web Development, and more.Read More
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Kidz StoreIndustries
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120$10,000+50 - 249 employeesWalnut Creek, CASoftware development company Creativa Studios is in Walnut Creek, California and San Salvador, El Salvador. They specialize in Custom Software Development, Web Development, Mobile App Development, Application Testing, and more and were founded in 2003.Read More
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Mitratech Inc.Industries
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