Top 100 Software Development Companies in California
The Best of October 2026Looking 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 an application development company. Their small team is based in Irvine, California. Their services include Mobile App Development, Custom Software Development, Artificial Intelligence, and Web Development. The company was established in 2017.Read More
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$10,000+10 - 49 employeesIrvine, CAKingsmen Digital Ventures is an application development company. Their small team is based in Irvine, California. Their services include Mobile App Development, Custom Software Development, Artificial Intelligence, and Web Development. The company was established in 2017.Read More
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1$50,000+50 - 249 employeesIrvine, CASoftware development firm Saritasa was established in 2005. In Irvine, California; New York, New York; Chicago, Illinois and Manhattan Beach, California, their midsize team provides Custom Software Development, AR/VR development, Artificial Intelligence, Mobile App Development, and more.Read More
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Mitsubishi Makita ASCO Power Technologies WinegardIndustries
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2$10,000+50 - 249 employeesSan Francisco, CAAirdev is a software development company established in 2015. The company provides Custom Software Development, Artificial Intelligence, Low/No Code Development, and Web Development and has a midsize team. The company is based in San Francisco, California.Read More
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HPIndustries
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3$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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4$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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5$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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6$50,000+250 - 999 employeesLos Angeles, CAApplication development company Goji Labs is based in Los Angeles, California and New York, New York. Established in 2014, the midsize team offers Mobile App Development, Artificial Intelligence, Custom Software Development, and Web Development.Read More
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World Health OrganizationIndustries
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7$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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8$10,000+250 - 999 employeesSacramento, CABluelight is a custom software development company. Launched in 2019, the agency is headquartered in Sacramento, California and Jardim Paulistano, Brazil. The midsize team focuses on Custom Software Development, Web Development, Mobile App Development, UX/UI Design, and more.Read More
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9$25,000+50 - 249 employeesLos Angeles, CAAppMakers USA is a mobile application development company. Based in Los Angeles, California; New York, New York; San Diego, California and Santa Monica, California, their midsize team offers Mobile App Development, Custom Software Development, Artificial Intelligence, UX/UI Design, and more. The firm was launched in 2014.Read More
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Los Angeles Apparel Walmart Number Hive NFLIndustries
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10$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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11$25,000+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
Clients
Yamaha Kroger Trader Joes NASAIndustries
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12$50,000+50 - 249 employeesLos Angeles, CARead More
Sidebench is a healthcare product design and software engineering studio founded in 2012 in Los Angeles. With a mid-sized team and enterprise delivery capabilities, we partner with providers, payers and health-tech startups to build HIPAA-minded platforms, patient engagement, EHR interoperability and legacy modernization that reduce data silos and enable real-time clinical workflows.
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Microsoft CorporationIndustries
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13$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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14$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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15$50,000+1,000 - 9,999 employeesSan Francisco, CABairesDev is an AI company based in San Francisco, California; Buenos Aires, Argentina; Sao Paulo, Brazil and Ciudad de México, Mexico. Launched in 2009, the large team specializes in Artificial Intelligence, IT staff augmentation, Custom Software Development, DevOps Managed Services, and more.Read More
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GoogleIndustries
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16$10,000+50 - 249 employeesSan Francisco, CAAzumo, a midsize AI company, is located in San Francisco, California and Rosario, Argentina. Established in 2016, the team offers Artificial Intelligence, Custom Software Development, AI Agents, AI Consulting, and more.Read More
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Twitter Facebook Omnicom Discovery ChannelIndustries
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17$75,000+10 - 49 employeesLos Angeles, CARead More
Noomo Agency is an interactive boutique agency headquartered in Los Angeles and founded in 2018. They have about 15 people who create immersive and interactive digital experiences that are both easy to use and a joy to engage with. From storytelling and immersive websites to highly interactive platforms, they create experiences that foster incredible engagement and drive business sales.
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Cadence Coinbase AMD SalesforceIndustries
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18$25,000+50 - 249 employeesSan Jose, CADiffco AI, a custom software development company, is in San Jose, California. The midsize team provides Custom Software Development, Artificial Intelligence, Mobile App Development, AI Agents, and more and was established in 2008.Read More
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Mars Chemtreat Nokia InstreamaticIndustries
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19$10,000+10 - 49 employeesSacramento, CARead More
Capitol Tech Solutions is a web design agency. Their small team is in Sacramento, California and San Diego, California and specializes in Web Design, Custom Software Development, Web Development, and IoT development. The company was founded in 2004.
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Ramos OilIndustries
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20$10,000+50 - 249 employeesSan Francisco, CAIn Alexandria, Virginia and San Francisco, California, JetRuby Agency is a midsize artificial intelligence company. They offer Artificial Intelligence, Custom Software Development, Mobile App Development, Web Development, and more and were launched in 2010.Read More
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OSRAMIndustries
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21$10,000+10 - 49 employeesIrvine, CAKingsmen Digital Ventures is an application development company. Their small team is based in Irvine, California. Their services include Mobile App Development, Custom Software Development, Artificial Intelligence, and Web Development. The company was established in 2017.Read More
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22$100,000+50 - 249 employeesNewark, CARead More
Dibutech is a software development firm. The midsize Concord, California-based team provides custom software development and web development. The firm was launched in 2018.
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23$50,000+10 - 49 employeesPasadena, CASerious Development is a small software development company founded in 2012. Their services include Custom Software Development, Mobile App Development, BI & big data consulting & SI, and Artificial Intelligence. The company is in Pasadena, California and Houston, Texas.Read More
Clients
Imperial Health CSD MedPoint Global 1Industries
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24$25,000+50 - 249 employeesMarina del Rey, CAAI Consulting company AE Studio is based in Marina del Rey, California. The midsize company was founded in 2016. Their services include AI Consulting, Artificial Intelligence, Custom Software Development, and Generative AI.Read More
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SamsungIndustries
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25$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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26$25,000+50 - 249 employeesSan Francisco, CARead More
Grio is a software consulting firm based in San Francisco, Calif, that was established in 2008. Their team of 50 employees offers web development, mobile app development, and UX/UI design services.
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27$50,000+2 - 9 employeesEl Segundo, CARead More
Expedition Co, is a software development company that was founded in 2017. The company is headquartered in Palos Verdes Estates, Calif. and is currently made up of 8 employees. They specialize in mobile app development, UX/UI design, and custom software development.
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Hewlett-Packard -
28$50,000+10 - 49 employeesLong Beach, CARead More
Established in 2001, JLOOP is a mobile application development firm. Their small team is based in Long Beach, California and , . Their team focuses on mobile app development, web development, and video production.
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IBMIndustries
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29$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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30$1,000+50 - 249 employeesSacramento, CAEstablished in 2013, Satva Solutions is a software development company. The agency provides Custom Software Development, ERP consulting and SI, IT staff augmentation, API Development, and more and has a midsize team.Read More
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RenaultIndustries
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