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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301$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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302$5,000+50 - 249 employeesSan Ramon, CAIntelliBuddies is a custom software development firm established in 2015. The company offers Custom Software Development and IT strategy consulting.Read More
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303$1,000+10 - 49 employeesSan Ramon, CACXcherry is a CRM consulting and SI and custom software development firm. Launched in 2021, the team specializes in CRM consulting and SI and Custom Software Development.Read More
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304Undisclosed50 - 249 employeesSan Jose, CAEike Consulting is a software development company. Their team is in San Jose, California and provides Custom Software Development and Mobile App Development.Read More
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305Undisclosed10 - 49 employeesSan Diego, CAPrimero Systems is a custom software development firm founded in 1994. The firm offers Custom Software Development and Web Development.Read More
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306$5,000+2 - 9 employeesLa Verne, CAEstablished in 1999, Alchemy Consulting Group is a custom software development firm. Their team focuses on Custom Software Development and other IT consulting and SI.Read More
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307$10,000+2 - 9 employeesAlameda, CAEntexture is a custom software development company. The Alameda, California-based company was launched in 2017. Their team provides Custom Software Development and IoT development.Read More
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308Undisclosed50 - 249 employeesSan Francisco, CARead More
ClearScale is a cloud-native systems integration, strategic consulting, and application development company founded in San Francisco with over 50 employees. They provide custom software development, mobile app development, and big data consulting services.
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309$1,000+2 - 9 employeesLos Angeles, CAInternetize.Me, a custom software development company, is in Los Angeles, California. They specialize in Custom Software Development and IT strategy consulting.Read More
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310$10,000+50 - 249 employeesSunnyvale, CAUpTeam is a Sunnyvale, California-based IT staff augmentation company. They specialize in IT staff augmentation and Web Development and were established in 2012.Read More
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311$1,000+10 - 49 employeesLos Angeles, CAEsitebucket is a custom software development firm. Established in 2017, the agency focuses on Custom Software Development and Web Design.Read More
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312Undisclosed10 - 49 employeesSan Francisco, CASoftAvail, Inc., a small software development company, is located in San Francisco, California and Sofia City, Bulgaria. The team focuses on Custom Software Development and Mobile App Development.Read More
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313$1,000+10 - 49 employeesLos Angeles, CANerdPilots is a Los Angeles, California-based custom software development firm. The team focuses on Custom Software Development and Web Development.Read More
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314$10,000+10 - 49 employeesLafayette, CAFounded in 2011, Synap is a small Reno, Nevada-based software development firm. Their services include Custom Software Development and Enterprise App Modernization.Read More
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315$10,000+10 - 49 employeesOrange, CACOFEBE Inc. Is an Orange, California-based custom software development firm. Launched in 2004, the team specializes in Custom Software Development and UX/UI Design.Read More
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316Undisclosed1,000 - 9,999 employeesWalnut, CARead More
Logistics & supply chain consulting company Whiplash (Port Logistics Group) was launched in 2008. They are located in Walnut, California and have a large team. Whiplash (Port Logistics Group) specializes in logistics & supply chain consulting, fulfillment, and custom software development.
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317$5,000+2 - 9 employeesLong Beach, CAOS Ignite, Inc. Is an app development company. The firm is in Long Beach, California and Costa Mesa, California. Their services include Mobile App Development and Custom Software Development.Read More
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318$10,000+50 - 249 employeesSan Francisco, CAFounded in 2015, Bytex Technologies is a website development firm. Their services include Web Development and Enterprise App Modernization.Read More
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319Undisclosed10 - 49 employeesWalnut Creek, CAEstablished in 2012, Appery.io is an application development firm. The small team provides mobile app development, custom software development, other application development, and web development. The company is headquartered in Walnut Creek, California.Read More
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320Undisclosed2 - 9 employeesLake Forest, CARead More
SQL Solutions Group is an IT strategy consulting company. The Lake Forest, California-based firm was launched in 2010. The small team focuses on IT strategy consulting, BI & big data consulting & SI, IT managed services, and custom software development.
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321$10,000+2 - 9 employeesValencia , CASaasSoft, a custom software development firm, is in Valencia , California. They focus on Custom Software Development and Web Development and were established in 2009.Read More
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322$10,000+250 - 999 employeesWalnut Creek, CASolvd, Inc. Is an IT staff augmentation company. The midsize team is based in Walnut Creek, California; Chernivtsi, Ukraine; Tandil, Argentina and Kyiv, Ukraine. Their services include IT staff augmentation, Custom Software Development, Web Development, and Application Testing.Read More
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NerdWalletIndustries
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323$10,000+2 - 9 employeesSan Francisco, CASmall software development company UI Flow, is located in San Francisco, California. The team provides Custom Software Development and Enterprise App Modernization.Read More
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324$25,000+2 - 9 employeesNevada City, CABlockchain company Tesuji was established in 2017. They are headquartered in Nevada City, California and Ho Chi Minh City, Vietnam and have a small team. Tesuji provides Blockchain, Mobile App Development, AR/VR development, Custom Software Development, and more.Read More
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DanceFightIndustries
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325Undisclosed2 - 9 employeesCovina, CASavvy Stack, Inc. Is a website development company. They provide Web Development and Custom Software Development and are based in Covina, California.Read More
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326$1,000+10 - 49 employeesSacramento, CAEdufyz is a custom software development company. Their team is located in Sacramento, California. The agency provides Custom Software Development.Read More
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327$25,000+10 - 49 employeesSanta Monica, CAAPrime Technology is a custom software development firm. The Dover, Delaware-based agency was founded in 2020. Their services include Custom Software Development and Artificial Intelligence.Read More
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328$10,000+10 - 49 employeesSan Juan Capistrano, CAKbrax, Inc. Is a San Juan Capistrano, California-based software development firm. Their services include Custom Software Development and Mobile App Development.Read More
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329$5,000+50 - 249 employeesNewport Beach, CALaunched in 2023, EcombitHub is a custom software development company. The company focuses on Custom Software Development and Web Development.Read More
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330$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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