Top 100 JavaScript Development Companies in San Francisco
The Best of December 2025Looking 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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61$10,000+10 - 49 employeesOakland, CAMarketing Strategy company Reverence Global was established in 2020. The firm focuses on Marketing Strategy, Branding, Search Engine Optimization, Web Design, and more and has a small team.Read More
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Good Radiance Inc.Industries
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62$10,000+2 - 9 employeesOakland, CAAclarify is a small custom software development company. The Boston, Massachusetts-based firm was founded in 2022. Their team provides Custom Software Development, Web Development, Mobile App Development, Blockchain, and more.Read More
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63$5,000+1,000 - 9,999 employeesSan Francisco, CARead More
Established in 2011, AppTecHub is a large mobile application development company. Their team offers mobile app development, web development, and custom software development. The agency is located in San Francisco, California.
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64$1,000+50 - 249 employeesSan Francisco, CAPerimattic is a midsize San Francisco, California-based artificial intelligence company. Founded in 2022, the team focuses on Artificial Intelligence, BI & big data consulting & SI, cloud consulting & SI, Custom Software Development, and more.Read More
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65$1,000+10 - 49 employeesSan Francisco, CARead More
Proleadsoft is a full-service digital agency headquartered in San Francisco, Calif. With a team of around 15 employees, Proleadsoft specializes in web development, SEO, and web design.With Proleadsoft's help, the youth nonprofit's website is modern, easy to navigate, and has attracted more traffic.
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Travel Merchants -
66$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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67$1,000+10 - 49 employeesSan Mateo, CARead More
Digicorns Technologies, a UX agency, is based in San Mateo, California and Noida, India. The firm offers ux/ui design, social media marketing, search engine optimization, pay per click, and more and has a small team.The firm was established in 2019.
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68$10,000+2 - 9 employeesSan Francisco, CARead More
LINK Creative is a design company based in Santa Rosa, Calif. with an office in San Francisco. Founded in 2002, the small team of 3 specializes in web development & design, UX/UI design, print design, and more. They work primarily with small businesses, focusing on education, business services, advertising, and marketing.
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City of Santa Rosa, College of Marin, Silicon Valley Data Sciences, Blyth Templeton Academy, Golden State Lumber, etc.Industries
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69$10,000+10 - 49 employeesFoster City, CARead More
Software development firm MugCo was founded in 2020. The small Pleasanton, California-based team specializes in custom software development, e-commerce development, web development, cloud consulting & SI, and more.
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70$50,000+50 - 249 employeesOakland, CACustom software development company Blue Trail Software was founded in 2013. Headquartered in Oakland, California; Tepatitlán de Morelos, Mexico; València, Spain and Resistencia, Argentina, their midsize team specializes in Custom Software Development, Building Security Services, Application Testing, Mobile App Development, and more.Read More
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71$50,000+2 - 9 employeesBerkeley, CAQuant Five LLC is a website development company launched in 2017. They are in Berkeley, California and have a small team. Their services include web development, ux/ui design, blockchain, mobile app development, and more.Read More
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72$5,000+10 - 49 employeesRedwood City, CANodeDevelop is a Redwood City, California-based website development company. The firm offers web development, mobile app development, ux/ui design, architectural design, and more and is small.The firm was founded in 2022.Read More
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73$1,000+50 - 249 employeesEmeryville, CAMake My Brand is a branding agency. The Emeryville, California-based team focuses on Branding and Web Design.Read More
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74$5,000+50 - 249 employeesSan Francisco, CADigis, a Fiverr company (NYSE: FVRR) is a custom software development company and web development firm. Launched in 2015, the team offers Custom Software Development and Web Development. Their midsize firm is in London, England; New York, New York; București, Romania and L'viv, Ukraine.Read More
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Blablacar Hubspot PwC HumaIndustries
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75$100,000+50 - 249 employeesSan Francisco, CALaunched in 2000, Carbon Five is a custom software development company. Their team specializes in Custom Software Development and Mobile App Development.Read More
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76$5,000+10 - 49 employeesSan Francisco, CALaunched in 2011, Nitid Bit is a website development firm. The team offers Web Development and Mobile App Development and is based in San Francisco, California.Read More
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77$1,000+2 - 9 employeesSan Francisco, CAE-commerce development firm bloossom.com was established in 2020. The small team provides E-Commerce Development and Web Development.Read More
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78$10,000+50 - 249 employeesSan Francisco, CARead More
Povio Labs is a design and development company headquartered in San Francisco. The team of 100+ provides software, web, and app development (iOS and Android), in addition to UX design, services to its small business and midmarket clients across a number of industries.
Clients
Serena WilliamsIndustries
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79$50,000+10 - 49 employeesEmeryville, CAProject6 Design, Inc. Is a web design company. The team focuses on Web Design and Web Development, and the agency is in Emeryville, California.Read More
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80$5,000+10 - 49 employeesSan Francisco, CACyberProtocols is an e-commerce development firm. The team is headquartered in San Francisco, California, and their services include E-Commerce Development and Web Development.Read More
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81$5,000+10 - 49 employeesOakland, CALimeTech is a mobile app development firm headquartered in Oakland, California and Boston, Massachusetts. The team specializes in Mobile App Development and Web Development.Read More
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82$50,000+10 - 49 employeesBerkeley, CARead More
Telos Labs is a digital agency based in Berkeley, Calif. with no more than 50 employees. Since their founding in 2017, they have offered web and mobile app development solutions to small and medium-sized businesses alike.
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Giving Connection, OnceSafe, Lira HR, PrediApp, SaverLifeIndustries
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83$5,000+2 - 9 employeesOakland, CARead More
Branding firm Wellington Studio was founded in 2016. The small Oakland, California-based team focuses on branding, graphic design, web design, logo, and more.
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84$25,000+2 - 9 employeesSan Francisco, CABKJ Digital is a website development company. Founded in 2016, the agency is headquartered in San Francisco, California. Their services include Web Development and Custom Software Development.Read More
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85$1,000+2 - 9 employeesSan Francisco, CAConversion Optimization company Startercode was launched in 2022. The small team provides Conversion Optimization and Search Engine Optimization.Read More
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86$5,000+50 - 249 employeesBirmingham, EnglandSoftware development firm eSquall LLC was established in 2017. The firm specializes in Custom Software Development and Web Development.Read More
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87$25,000+10 - 49 employeesOakland, CAMangrove Web is a small website development firm. The Oakland, California-based company was established in 2009. Their team provides Web Development, Web Design, Branding, Content Marketing, and more.Read More
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Mighty NetworksIndustries
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88$1,000+10 - 49 employeesSan Francisco, CAThe Website Designs is a San Francisco, California-based branding firm. The small agency was established in 2009. Their team focuses on branding, public relations, social media marketing, pay per click, and more.Read More
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89$5,000+2 - 9 employeesSan Francisco, CAWebsite development company Workbox was established in 1997. The team focuses on Web Development and Custom Software Development.Read More
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90$10,000+50 - 249 employeesSan Francisco, CAScalable Path, an IT staff augmentation company, was established in 2010. They are headquartered in San Francisco, California and have a midsize team. Their services include IT staff augmentation, Custom Software Development, UX/UI Design, Web Development, and more.Read More
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GenslerIndustries
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