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.
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List of the Best California Software Developers
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871$10,000+250 - 999 employeesSan Francisco, CAEmpat is a midsize app development company established in 2013. Their team offers Mobile App Development, Custom Software Development, Artificial Intelligence, and Web Development. The firm is in San Francisco, California; Kyiv, Ukraine; London, England and Miami, Florida.Read More
Clients
Obimy — A mobile app connecting loved ones across distances with over 10 million downloads on iOS and Android. Enables seamless communication and emotional connection. Mobile app development and social networking focus. Bigsister — Custom AI software designed for sales performance tracking and analysis, providing clean, accurate data to optimize sales teams and improve efficiency with advanced analytics. Trigga — A fintech project featuring payment systems and a comprehensive analytical database to support secure transactions and financial insights for smarter decision-making. DentalCare — Healthcare ecosystem with mobile app, web development, and CRM tools for managing patient records, tracking appointments, and sending automated reminders to improve patient care.Industries
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872$1,000+50 - 249 employeesLos Angeles, CANowcom is a Back Office Outsourcing company. Founded in 1996, their team provides Back Office Outsourcing and Custom Software Development.Read More
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873Undisclosed50 - 249 employeesBrisbane, CAVOX Network Solutions is a software development firm. The team focuses on Custom Software Development and Customer Service Outsourcing and is located in Brisbane, California.Read More
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874Undisclosed50 - 249 employeesMonterey, CABusiness Consulting company Advanced Onion, Inc. Was established in 2006. The team focuses on Business Consulting and Custom Software Development and is located in Monterey, California.Read More
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875Undisclosed2 - 9 employeesAntioch, CAThe Learning Design Studio, a custom software development company, is located in Antioch, California. Launched in 2021, the team focuses on Custom Software Development.Read More
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876Undisclosed50 - 249 employeesFremont, CAInterSources Inc, a midsize UX agency, is based in Wilmington, Delaware and Fremont, California. The team provides UX/UI Design and BI & big data consulting & SI.Read More
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877Undisclosed50 - 249 employeesSan Diego, CASoftClouds is a cloud consulting & SI company launched in 2005. Their team offers cloud consulting & SI and CRM consulting and SI.Read More
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878Undisclosed50 - 249 employeesIrvine, CAEJAmerica is a big data analytics company located in Irvine, California. Founded in 2016, the team specializes in BI & big data consulting & SI and cloud consulting & SI.Read More
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879Undisclosed50 - 249 employeesSan Ramon, CATrident Consulting Inc, a business intelligence company, offer BI & big data consulting & SI and cloud consulting & SI. They were founded in 2005.Read More
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880Undisclosed50 - 249 employeesPleasanton, CAAllianceIT Inc is a data analytics company. In Pleasanton, California, the team specializes in BI & big data consulting & SI and ERP consulting and SI.Read More
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881Undisclosed50 - 249 employeesSanta Clara, CAMidsize user experience design company Infotech Spectrum Inc, is headquartered in Santa Clara, California. The team specializes in UX/UI Design and IT strategy consulting.Read More
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882Undisclosed50 - 249 employeesAnaheim, CAUB Technology Innovations (UBTI) is a cloud consulting & SI company. The Anaheim, California-based team focuses on cloud consulting & SI and Custom Software Development.Read More
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883Undisclosed50 - 249 employeesCupertino, CAAppPerfect Corp is a custom software development firm. Headquartered in Cupertino, California, their team focuses on Custom Software Development and Robotics Process Automation.Read More
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884Undisclosed50 - 249 employeesSan Jose, CABetaSoft Inc. Is a cloud consulting & SI company. Their midsize team of employees is based in San Jose, California. Their team provides cloud consulting & SI and Application Testing.Read More
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885Undisclosed1,000 - 9,999 employeesSunnyvale, CAXoriant is an UX agency launched in 1990. The company offers UX/UI Design and BI & big data consulting & SI, and is large.Read More
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886Undisclosed50 - 249 employeesSanta Clara, CAEITACIES Inc., a data analytics company, is located in Santa Clara, California. Founded in 2008, the team focuses on BI & big data consulting & SI and Custom Software Development.Read More
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887Undisclosed50 - 249 employeesSunnyvale, CABased in Sunnyvale, California, TRUEXTEND, Inc. Is a custom software development firm. The team offers Custom Software Development and Web Development.Read More
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888Undisclosed50 - 249 employeesChico, CALiatrio, a cloud consulting & SI company, was launched in 2023. The team focuses on cloud consulting & SI and Custom Software Development and is headquartered in Chico, California.Read More
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889Undisclosed50 - 249 employeesChico, CAShasta QA , an Application Testing company, was launched in 2002. The midsize team offers Application Testing and Custom Software Development.Read More
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890Undisclosed50 - 249 employeesRedwood City, CASplit Software, Inc. Is an Application Testing company. They offer Application Testing and Custom Software Development and were launched in 2015.Read More
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891Undisclosed50 - 249 employeesSan Diego, CAMiva, Inc. Is a midsize SEO services firm based in Tampa, Florida and San Diego, California. Their services include Search Engine Optimization and Web Design.Read More
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892Undisclosed50 - 249 employeesSan Diego, CAS-Square Systems, Inc, a cloud consulting & SI company, offer cloud consulting & SI and IT managed services. They were founded in 2002.Read More
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893$10,000+2 - 9 employeesRedlands, CAFounded in 2024, ParaWav Ai is a software development company. Their services include Custom Software Development and Direct Marketing.Read More
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894$1,000+10 - 49 employeesSunnyvale, CAArosys Technologies, a small software development company, is headquartered in Sunnyvale, California and Bhilai, India. The team focuses on Custom Software Development and Application Testing.Read More
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895$1,000+10 - 49 employeesSanta Clara, CAArdira is a cloud consulting & SI company. Located in Santa Clara, California and Ahmedabad, India, the firm specializes in cloud consulting & SI and Mobile App Development.Read More
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896$50,000+50 - 249 employeesSan Francisco, CALaunched in 2017, Missing Corner is a midsize artificial intelligence development company. Their team offers Artificial Intelligence and Custom Software Development.Read More
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897$100,000+50 - 249 employeesMarina del Rey, CARead More
Established in 2012, Unique Software Development is a data analytics company. The firm offers BI & big data consulting & SI, Web Development, Custom Software Development, Mobile App Development, and more and has a midsize team. The firm is headquartered in Dallas, Texas; Washington, District of Columbia; New York, New York and Austin, Texas.
Clients
MODE TransportationIndustries
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898$10,000+50 - 249 employeesLos Angeles, CAPhenomenon Studio, an user experience design agency, was established in 2019. Located in Dover, Delaware; Chicago, Illinois; New York, New York and Los Angeles, California, their midsize team offers UX/UI Design, Web Development, Custom Software Development, Branding, and more.Read More
Clients
Wisdom iolo/RealDefense One Text ArtisanIndustries
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899$1,000+10 - 49 employeesNewark, CAStackmybiz is a website development firm. The agency is in Ranchi, India and Newark, California. Their services include Web Development and Mobile App Development.Read More
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900$1,000+50 - 249 employeesMission Viejo, CALaunched in 2006, Infoshare Systems, Inc is a branding company. The team specializes in Branding and Digital Strategy.Read More
Industries
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Check out a Software Developers in California with the most new reviews in the past 12 months.
Most Reviewed
Software Developers
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