Top 100 Software Development Companies in California
The Best of December 2025Looking for a top software developer in California?
As the use of mobile and web apps rise, your business’s digital presence becomes even more important. The biggest challenge facing organizations is how they can keep up in the digital world. The best way is to continuously develop up-to-date software that allows your organization to maintain an impactful digital presence.
To assist you in your search for a partner, we’ve compiled this list of the top software development companies in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best California Software Developers
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$10,000+10 - 49 employeesIrvine, CAKingsmen Digital Ventures is a software development firm. Their small team is located in Irvine, California. The firm specializes in Custom Software Development, Mobile App Development, UX/UI Design, E-Commerce Development, and more.Read More
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$25,000+10 - 49 employeesMedina, WAFlower Press Interactive is a small user experience agency launched in 2001. Their team offers UX/UI Design, Mobile App Development, Custom Software Development, Web Development, and more. The company is located in Medina, Washington.Read More
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$10,000+10 - 49 employeesJohannesburg, South AfricaRead More
Mobile application development firm CubeZoo was established in 2011. In Johannesburg, South Africa and London, England, their small team specializes in Mobile App Development, Web Development, Artificial Intelligence, UX/UI Design, and more.
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1$25,000+50 - 249 employeesLos Angeles, CAGoji Labs is a custom software development firm. Their midsize team is in Los Angeles, California and New York, New York. Their services include Custom Software Development, Mobile App Development, UX/UI Design, Web Design, and more. The firm was established in 2014.Read More
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World Health OrganizationIndustries
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2$50,000+1,000 - 9,999 employeesSan Francisco, CARead More
BairesDev is a San Francisco, California-based software development company. The large team offers Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more. The company was founded in 2009.
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GoogleIndustries
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3$50,000+50 - 249 employeesNewport Beach, CASaritasa, a software development company, is headquartered in Newport Beach, California; New York, New York; Chicago, Illinois and Manhattan Beach, California. The midsize company was established in 2005. Their team provides Custom Software Development, AR/VR development, Web Development, Mobile App Development, and more.Read More
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Mitsubishi Makita ASCO Power Technologies WinegardIndustries
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4$50,000+1,000 - 9,999 employeesSan Francisco, CARead More
Toptal is a private network of freelance technologists and designers. With more than 2000 freelance workers in its exclusive community, Toptal can be instrumental in finding the right freelance partner for development projects. The community includes developers for any platform, finance experts, and designers of both visual material and graphic interfaces. Because of its screening process, Toptal combines the reliability and expertise of an agency with the flexibility and affordability of freelance work.
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Toptal clients include J.P. MorganIndustries
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5$50,000+250 - 999 employeesIrvine, CAVincit is a midsize custom software development company. They provide Custom Software Development, Web Development, and Mobile App Development and were founded in 2007. The company is in Irvine, California and Scottsdale, Arizona.Read More
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SplunkIndustries
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6$25,000+10 - 49 employeesSolana Beach, CAAsymm is a custom software development firm launched in 2020. Their small team is in Solana Beach, California and Ciudad de México, Mexico and focuses on Custom Software Development and UX/UI Design.Read More
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7$10,000+50 - 249 employeesSan Francisco, CARead More
AirDev is a San Francisco based software development company. They were founded in 2015 and have a team of 11 employees who specialize in the custom software, web, mobile app development.
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HPIndustries
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8$100,000+250 - 999 employeesLos Angeles, CAIn Los Angeles, California; Santa Monica, California; New York, New York and San Francisco, California, TheoremOne is a midsize software development company. They focus on Custom Software Development, IT strategy consulting, Business Consulting, IoT development, and more and were founded in 2007.Read More
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AT&TIndustries
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9$25,000+50 - 249 employeesSan Jose, CADiffco, a custom software development firm, is based in San Jose, California. They focus on Custom Software Development, Artificial Intelligence, IT staff augmentation, Web Development, and more and were launched in 2008.Read More
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Mars Chemtreat Nokia InstreamaticIndustries
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10$10,000+50 - 249 employeesSan Francisco, CAAzumo, an artificial intelligence company, was established in 2016. Their midsize team is headquartered in San Francisco, California and Rosario, Argentina. The firm provides Artificial Intelligence, Custom Software Development, Mobile App Development, and BI & big data consulting & SI.Read More
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Twitter Facebook Omnicom Discovery ChannelIndustries
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11$10,000+50 - 249 employeesSan Francisco, CARead More
Founded in 2012, SF AppWorks is a digital agency that produces innovative technologies for mainly midmarket companies. Based in San Francisco, their team of 50+ specializes in web development, mobile app development, UX/UI design, and custom software development.
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West ElmIndustries
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12$10,000+50 - 249 employeesSacramento, CABluelight is a midsize custom software development firm based in Sacramento, California and Jardim Paulistano, Brazil. Launched in 2019, the team provides Custom Software Development, Web Development, Mobile App Development, UX/UI Design, and more.Read More
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13$10,000+50 - 249 employeesSan Francisco, CAScaleTech Solutions, a custom software development company, was launched in 2017. The agency focuses on Custom Software Development, IT managed services, Mobile App Development, E-Commerce Development, and more and has a midsize team. The agency is in San Francisco, California; Frankfurt am Main, Germany and Ahmedabad, India.Read More
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14$25,000+10 - 49 employeesIrvine, CABaytech Consulting is a custom software development company based in Irvine, California. They focus on Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more and were launched in 2007.Read More
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Petra Medical CollegeIndustries
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15$5,000+50 - 249 employeesPasadena, CAEstablished in 1991, Art+Logic is a software development firm. The agency specializes in Custom Software Development, UX/UI Design, Web Development, Mobile App Development, and more and has a midsize team.Read More
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Yamaha Kroger Trader Joes NASAIndustries
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16$10,000+50 - 249 employeesBerkeley, CARead More
Founded in 2016, Crowdbotics is a development company based in Berkeley, Calif. They work with businesses of all sizes in the business services, consumer products, and healthcare fields.
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StripeIndustries
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17$50,000+50 - 249 employeesSan Francisco, CARead More
Cybercraft Inc. is a development agency headquartered in Lviv, Ukraine, that was established 2012. Their team of 19 offers custom software development, IT staff augmentation, web development, and more.
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Palo Alto NetworksIndustries
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18$50,000+50 - 249 employeesSanta Monica, CARead More
Sidebench is a strategy, design, and development consultancy with a team of 70+ experts headquartered in Los Angeles. Founded in 2012, Sidebench caters to enterprise companies and new ventures seeking the management consultants & experienced founders, the technical chops of systems architects, and a UX-first approach. Sidebench provides app and web development, UX/UI design, web design, and app testing via a fully integrated product delivery team.
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Microsoft CorporationIndustries
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19$25,000+10 - 49 employeesEl Segundo, CARead More
Founded in 2001, Thinklogic is a development firm. Their small team is based in El Segundo, Calif. They focus on custom software, web, and mobile app development.
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Johnson & JohnsonIndustries
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20$50,000+50 - 249 employeesLos Angeles, CARead More
CitrusBits is a mobile app development company based in Los Angeles, CA and founded in 2005. The team of nearly 60 employees is passionate about creating mobile technology and responsive mobile content for all businesses.
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Burger KingIndustries
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21$25,000+10 - 49 employeesVista, CAFounded in 2005, The Smyth Group is an UX design agency. The small team focuses on UX/UI Design, Custom Software Development, Web Development, Mobile App Development, and more. The agency is headquartered in Vista, California; New York, New York and Scottsdale, Arizona.Read More
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Columbia SportswearIndustries
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22$10,000+50 - 249 employeesSan Diego, CARead More
WebcentrIQ is a software development company in San Diego. Founded in 2017, they have about 10 employees that serve mostly midmarket and small-business clients in the healthcare, financial, and IT industries. Services include custom software development, mobile app development, and UI/UX design.
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Campaign MonitorIndustries
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23$5,000+50 - 249 employeesAltadena, CAEbizON Digital is an e-commerce development firm based in Altadena, California and Noida, India. The midsize firm was launched in 2007. Their services include E-Commerce Development, Custom Software Development, Mobile App Development, and Web Development.Read More
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24$5,000+10 - 49 employeesEl Segundo, CARead More
Facet Interactive is a small Digital Strategy company launched in 2014. Their services include Digital Strategy, BI & big data consulting & SI, cloud consulting & SI, CRM consulting and SI, and more. The agency is based in El Segundo, California.
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Element Solutions IncIndustries
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25$1,000+10 - 49 employeesSan Diego, CAESEOspace is a San Diego, California-based web design agency. Established in 2018, the small team provides Web Design, Search Engine Optimization, Web Development, E-Commerce Development, and more.Read More
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26$25,000+10 - 49 employeesLos Angeles, CAVrrb - Web & Product Design Agency is a web design agency. They specialize in Web Design, Web Development, Branding, UX/UI Design, and more and were founded in 2007. Their small team is headquartered in Los Angeles, California; Barcelona, Spain and Barcelona, Spain.Read More
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Ferrari Visa HP LeicaIndustries
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27$100,000+10 - 49 employeesSan Francisco, CARead More
WLCM App Studio is a software development firm launched in 2011. The small San Francisco, California-based team specializes in custom software development, mobile app development, ux/ui design, application testing, and more.
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28$50,000+250 - 999 employeesPalo Alto, CARead More
Turing is a small IT staff augmentation company. Established in 2018, the agency is in Palo Alto, California. Their services include IT staff augmentation.
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29$10,000+10 - 49 employeesLos Angeles, CAENDERTECH is a web design agency founded in 2000. Their small team is based in Los Angeles, California. The firm specializes in Web Design, Custom Software Development, Web Development, and E-Commerce Development.Read More
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DoyleIndustries
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30$100,000+50 - 249 employeesLos Angeles, CARead More
AE Studio is a team of designers, engineers, and data scientists based in Venice, CA – working on blockchain solutions internally and for partners since their founding in 2016. Their team of more than 150 members provides full, end-to-end blockchain services for startups and enterprise partners, ranging from strategic advisory to community/gtm to smart contract deployment. They are chain agnostic and partner with leading blockchain groups like Dapper Labs, Polygon, and Skale.
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SamsungIndustries
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