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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$10,000+10 - 49 employeesIrvine, CAKingsmen Digital Ventures, a custom software development company, is in Irvine, California. Established in 2017, the small team offers Custom Software Development, Mobile App Development, UX/UI Design, Web Development, and more.Read More
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$10,000+10 - 49 employeesMedina, WAFlower Press Interactive is a custom software development firm. The Medina, Washington-based company was established in 2001. The small team focuses on Custom Software Development, UX/UI Design, Mobile App Development, Web Design, and more.Read More
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301$1,000+250 - 999 employeesSan Mateo, CAERP consulting and SI company Folio3 Agtech was established in 2005. The agency specializes in ERP consulting and SI and Custom Software Development.Read More
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302$1,000+50 - 249 employeesSan Mateo, CAFounded in 2015, Folio3 Digital Health is a software development company. The firm provides Custom Software Development and Web Development.Read More
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303$5,000+50 - 249 employeesFremont, CAElsner Technologies Pvt Ltd is a custom software development firm. The midsize Lakeland, California-based company was launched in 2006. Their services include Custom Software Development, E-Commerce Development, Search Engine Optimization, Web Development, and more.Read More
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304$5,000+2 - 9 employeesFresno, CAJETS Tech., LLC is a custom software development company. Based in Fresno, California, the firm focuses on Custom Software Development and Web Development.Read More
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305$1,000+50 - 249 employeesSan Francisco, CAACCELQ is a branding company. The team is headquartered in San Francisco, California, and their services include Branding and Custom Software Development.Read More
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306Undisclosed50 - 249 employeesIrvine, CAMidsize custom software development firm Trusted Tech Team, is headquartered in Irvine, California. Their services include Custom Software Development and cloud consulting & SI.Read More
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307Undisclosed250 - 999 employeesSanta Clara, CARead More
Xekera Systems Inc. Is a Santa Clara, California-based software development company. The midsize team provides custom software development, other digital marketing, web development, Artificial Intelligence, and more and was founded in 2001.
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308$10,000+50 - 249 employeesLos Angeles, CASEROKELL is an AI firm. The midsize team is located in Paris, France; Los Angeles, California; Tel Aviv-Jaffa, Israel and New York, New York. Their services include Artificial Intelligence, Custom Software Development, Blockchain, AI Consulting, and more.Read More
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309$25,000+10 - 49 employeesSan Francisco, CAReinteractive is a software development company. The San Francisco, California-based team focuses on Custom Software Development and E-Commerce Development.Read More
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310Undisclosed50 - 249 employeesFremont, CASoftware development company SynergisticIT was established in 2010. The team offers Custom Software Development and is headquartered in Fremont, California.Read More
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311Undisclosed250 - 999 employeesIrvine, CABatchMaster Software, a custom software development company, provide Custom Software Development and cloud consulting & SI. They were founded in 1983.Read More
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312Undisclosed1,000 - 9,999 employeesSan Jose, CAAstreya is an IT strategy consulting company founded in 2001. Their team offers IT strategy consulting and BI & big data consulting & SI.Read More
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313$25,000+250 - 999 employeesSunnyvale, CAIn Sunnyvale, California and Hyderabad, India, KloudGin is a custom software development firm. They offer Custom Software Development and Application Management & Support.Read More
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314Undisclosed10 - 49 employeesIrvine, CAEstablished in 2017, Chiron IT is an Enterprise App Modernization company. Their team focuses on Enterprise App Modernization and IT managed services.Read More
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315$25,000+2 - 9 employeesThousand Oaks, CABuena Digital is a custom software development firm. The team provides Custom Software Development and Mobile App Development, and the agency is based in Thousand Oaks, California.Read More
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316$5,000+10 - 49 employeesSan Ramon, CARead More
Jack Frost Design, a cloud consulting & SI company, was launched in 1968. They are in San Ramon, California and Rocklin, California and have a small team. Their services include cloud consulting & SI, web development, e-commerce development, and corporate training & coaching.
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317$1,000+10 - 49 employeesLos Angeles, CAWink Ticker is a custom software development company. Launched in 2004, their team offers Custom Software Development.Read More
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318$10,000+250 - 999 employeesEl Segundo, CACustom software development firm Columbus Technologies and Services was launched in 2001. The firm provides Custom Software Development and IT managed services, and is midsize.Read More
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319Undisclosed10 - 49 employeesSan Jose, CAKonsulko Group, an IT strategy consulting and software development company, is in San Jose, California. Founded in 2012, the team offers IT strategy consulting and Custom Software Development.Read More
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320Undisclosed50 - 249 employeesAliso Viejo, CABizPortals QCFlow is a custom software development firm. They offer Custom Software Development and IT managed services and were established in 2001.Read More
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321Undisclosed50 - 249 employeesRiverside, CALocated in Riverside, California, Assima Global Inc is a midsize custom software development firm. The team specializes in Custom Software Development and IT managed services.Read More
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322Undisclosed50 - 249 employeesLos Angeles, CACustom software development company Principal Development Group Consulting is headquartered in Los Angeles, California. The team provides Custom Software Development.Read More
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323$250,000+250 - 999 employeesRancho Santa Fe, CAITJ is a custom software development firm in Rancho Santa Fe, California. They provide Custom Software Development.Read More
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324$1,000+2 - 9 employeesPleasanton, CABydrec Inc. Is a software development company launched in 2013. The company specializes in Custom Software Development and HR Consulting, and is small.Read More
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325Undisclosed10 - 49 employeesGlendora, CAEstablished in 2013, My Best Studio is a small software development company. Their team provides Custom Software Development and Web Design.Read More
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326Undisclosed250 - 999 employeesMountain View, CAFounded in 2019, Factored, a midsize software development firm, is located in Mountain View, California. Their team provides Custom Software Development and BI & big data consulting & SI.Read More
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327$10,000+250 - 999 employeesLos Angeles, CAAQe Digital, a software development firm, is located in Los Angeles, California. The midsize firm was established in 1999. Their services include Custom Software Development, AI Consulting, BI & big data consulting & SI, and Web Development.Read More
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328$25,000+10 - 49 employeesLaguna Hills, CASinanSoft is a software development firm. Launched in 2015, the agency is in Laguna Hills, California. Their team offers Custom Software Development and API Development.Read More
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329$1,000+10 - 49 employeesFremont, CATeam247 Inc. Is a software development company. Launched in 2016, the company is located in Fremont, California. Their team specializes in Custom Software Development and Enterprise App Modernization.Read More
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330Undisclosed50 - 249 employeesPleasanton, CAWizr AI is a custom software development firm. They are based in Pleasanton, California, and their services include Custom Software Development and Artificial Intelligence.Read More
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Check out a Software Developers in California with the most new reviews in the past 12 months.
Most Reviewed
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