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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481$5,000+10 - 49 employeesSan Jose, CATalaria Platform, Inc is a software development company based in San Jose, California. Their services include Custom Software Development and Microservices Architecture Services.Read More
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482Undisclosed10 - 49 employeesWest Covina, CASmall big data company Revnue, is headquartered in West Covina, California. The team offers BI & big data consulting & SI and IT managed services.Read More
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483Undisclosed10 - 49 employeesCampbell, CAIoT development company Shoreline AI provides IoT development and Custom Software Development. They are based in Campbell, California.Read More
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484$10,000+50 - 249 employeesRiverside, CAIn Riverside, California, Q-vantage is a midsize social media marketing company. Their services include Social Media Marketing and IT strategy consulting.Read More
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485$1,000+10 - 49 employeesRichmond, CABeesoul LLC is an AI firm. The small team is based in Richmond, California; Kathmandu, Nepal and London, England. Their services include Artificial Intelligence, Custom Software Development, Generative AI, AI Agents, and more.Read More
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486$5,000+2 - 9 employeesIrvine, CAHeadquartered in Irvine, California and Denver, Colorado, HawkenIO is a small software development firm. The team focuses on Custom Software Development and Artificial Intelligence.Read More
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487$25,000+10 - 49 employeesLarkspur, CATerrace Consulting, Inc. Is a small ERP consulting and SI company headquartered in Larkspur, California. Their services include ERP consulting and SI and Custom Software Development.Read More
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488Undisclosed50 - 249 employeesOxnard, CASoftware development company Western Computer is in Oxnard, California. They specialize in Custom Software Development and BI & big data consulting & SI.Read More
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489$1,000+50 - 249 employeesLos Angeles, CAWeb Design Innovatives is a social media marketing firm. The Los Angeles, California-based agency offers Social Media Marketing and Search Engine Optimization.Read More
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490$25,000+10 - 49 employeesIrvine, CADV8 Infosystems is a cloud consulting & SI company. Founded in 2020, the firm is in Irvine, California and Chicago, Illinois. Their services include cloud consulting & SI and Cybersecurity.Read More
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491$10,000+50 - 249 employeesSan Francisco, CARead More
The Rocked Code is a custom software development firm. Their midsize team is located in Ciudad de México, Mexico. Their services include custom software development, other IT consulting and SI, application management & support, product design, and more. The agency was established in 2016.
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Coru Creze Hexalud SEOS EnergyIndustries
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492Undisclosed10 - 49 employeesSan Francisco, CAAccounting Micro Systems is an ERP consulting and SI company located in San Francisco, California. They specialize in ERP consulting and SI and Custom Software Development.Read More
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493$10,000+10 - 49 employeesSan Francisco, CAEstablished in 2001, COG1 is a custom software development company. The team provides Custom Software Development and UX/UI Design.Read More
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494Undisclosed10 - 49 employeesSanta Cruz, CAProductOps, Inc. Is a small data analytics company launched in 2008. Their team focuses on BI & big data consulting & SI and Custom Software Development.Read More
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495$1,000+50 - 249 employeesSan Francisco, CAHeadquartered in San Francisco, California; Dhaka, Bangladesh; Makkah, Saudi Arabia and Kuala Lumpur, Malaysia, Wavespace Digital Agency LLC is an user experience agency. The company provides UX/UI Design, Web Design, Custom Software Development, Branding, and more and is midsize.The company was launched in 2019.Read More
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496Undisclosed10 - 49 employeesLos Angeles, CAQualityWorks Consulting Group is an Application Testing company. Their small team is in Los Angeles, California and Jamaica. The firm specializes in Application Testing, Custom Software Development, and AI Agents. The firm was launched in 2010.Read More
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497$25,000+2 - 9 employeesMcClellan Park, CASmall web development company Kore Innovations, is headquartered in McClellan Park, California. The team specializes in Web Development and Custom Software Development.Read More
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498$5,000+2 - 9 employeesOceanside, CAIn Oceanside, California, DEVNOSTIC is a custom software development company. Established in 2019, the team focuses on Custom Software Development and Web Development.Read More
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499Undisclosed2 - 9 employeesVentura, CASWANTECH is a software development firm. Founded in 2024, the firm is headquartered in Ventura, California. Their team specializes in Custom Software Development and Web Development.Read More
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500$5,000+2 - 9 employeesSacramento, CAIn Sacramento, California, Sierra Strategic is a software development company. They provide Custom Software Development and Web Development.Read More
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501$10,000+2 - 9 employeesSan Francisco, CAEstablished in 2025, Nextdev is a custom software development company. The agency provides Custom Software Development and Recruiting.Read More
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502$1,000+2 - 9 employeesPalo Alto, CAIn Palo Alto, California, Pylon Dev is a custom software development company. Established in 2024, the team offers Custom Software Development and Artificial Intelligence.Read More
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503$1,000+2 - 9 employeesSan Francisco, CAExerium is a CRM consulting and SI company. The San Francisco, California-based firm offers CRM consulting and SI and Custom Software Development.Read More
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504$1,000+2 - 9 employeesSan Diego, CAIn San Diego, California, Namazu Studios is a custom software development company. The team focuses on Custom Software Development and Web Development.Read More
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505$5,000+2 - 9 employeesTorrance, CADow Bubble Coaching is a software development firm. The team specializes in Custom Software Development and Web Development and is based in Torrance, California.Read More
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506$25,000+10 - 49 employeesMountain View, CAGlobal Engineering is a custom software development firm. Their team is based in Mountain View, California. The firm offers Custom Software Development and UX/UI Design.Read More
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507$1,000+10 - 49 employeesDiamond Bar, CAFounded in 2017, InfoLake LLC, a small custom software development company, is in Diamond Bar, California. Their team specializes in Custom Software Development and Web Development.Read More
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508$1,000+10 - 49 employeesLos Angeles, CAAussie Cyberon is a web development firm. They were founded in 2025, and their services include Web Development and Social Media Marketing.Read More
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509$25,000+250 - 999 employeesSan Mateo, CAFolio3 AI is a midsize artificial intelligence firm launched in 2005. Their team provides Artificial Intelligence, IT strategy consulting, IT staff augmentation, Custom Software Development, and more. The agency is in San Mateo, California.Read More
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510$100,000+50 - 249 employeesSan Francisco, CAEntelis.Team is a midsize San Francisco, California-based IT staff augmentation company. The team offers IT staff augmentation and Custom Software Development.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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