Top 100 Software Development Companies in California
The Best of March 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, CACustom software development company Kingsmen Digital Ventures is based in Irvine, California. The small team specializes in Custom Software Development, Mobile App Development, UX/UI Design, E-Commerce Development, and more and was launched in 2017.Read More
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$10,000+10 - 49 employeesMedina, WAFlower Press Interactive is an artificial intelligence firm founded in 2001. Their small team is in Medina, Washington and offers Artificial Intelligence, UX/UI Design, AI Consulting, Custom Software Development, and more.Read More
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721$25,000+50 - 249 employeesPalo Alto, CARead More
Aligned Code, a enterprise app modernization company, is located in Warszawa, Poland and Palo Alto, California. The midsize company was founded in 2013. Their services include enterprise app modernization, mobile app development, custom software development, web development, and more.
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PepsiCoIndustries
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722$5,000+Freelancer employeesDavis, CAFresh Web Agency is a web development company based in Davis, California. Established in 2021, the team focuses on Web Development and Custom Software Development.Read More
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Shopify Rebellion Boardroom Shopify Hommewrk -
723$10,000+50 - 249 employeesSacramento, CATaction Software LLC is a custom software development firm. Launched in 2013, the team offers Custom Software Development, Mobile App Development, Artificial Intelligence, and Web Development. Their midsize company is based in Chicago, Illinois; Cheyenne, Wyoming; Noida, India and Austin, Texas.Read More
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First National BankIndustries
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724Undisclosed2 - 9 employeesSunnyvale, CAOxygen AI is a Sunnyvale, California-based Business Consulting company. They focus on Business Consulting and Custom Software Development and were founded in 2017.Read More
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725Undisclosed2 - 9 employeesWhittier, CAExpedite IO, a small custom software development firm, is in Whittier, California. The team specializes in Custom Software Development and IT managed services.Read More
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726Undisclosed250 - 999 employeesSan Francisco, CARead More
Human resources company Gusto was established in 2011. They are in San Francisco, California and have a midsize team. Their services include HR services and custom software development.
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727$1,000+10 - 49 employeesIrvine, CACharisol Technology is a website development firm founded in 2015. The company focuses on Web Development and Mobile App Development, and is small.Read More
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728$25,000+250 - 999 employeesSan Francisco, CAHelpware Tech is a midsize San Francisco, California-based IT strategy consulting company. They provide IT strategy consulting, IT staff augmentation, Custom Software Development, Web Development, and more and were founded in 2015.Read More
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Google Microsoft PWC CompIQIndustries
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729$10,000+2 - 9 employeesLa Habra, CAUniversal Informatics LLC, a web development company, was founded in 2024. They are based in La Habra, California and have a small team. Their services include web development, mobile app development, api development, microservices architecture services, and more.Read More
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730$5,000+10 - 49 employeesSacramento, CASmall mobile app development company TechloSet, is located in Faisalabad, Pakistan and Sacramento, California. Their services include Mobile App Development and Custom Software Development.Read More
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731$25,000+50 - 249 employeesSan Francisco, CALocated in San Francisco, California; San Ramon, California and Lahore, Pakistan, Kwanso LLC is a custom software development firm. They focus on Custom Software Development, Web Development, Mobile App Development, IoT development, and more and were founded in 2012.Read More
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US NewsIndustries
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732$10,000+50 - 249 employeesSan Mateo, CAIn San Mateo, California and Nanakramguda, India, Altir is a custom software development firm. The midsize company was launched in 2020. Their services include Custom Software Development, UX/UI Design, Artificial Intelligence, AI Consulting, and more.Read More
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733$10,000+50 - 249 employeesFullerton, CAFounded in 2009, Pegasus One is a business intelligence company. The firm offers BI & big data consulting & SI, cloud consulting & SI, Custom Software Development, Mobile App Development, and more and has a midsize team. The firm is located in Fullerton, California and Mumbai, India.Read More
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Toshiba Disney City National Bank HondaIndustries
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734Undisclosed50 - 249 employeesSanta Clara, CAThe X Future Inc is a software development company located in Santa Clara, California and Mumbai, India. The team focuses on Custom Software Development and Mobile App Development.Read More
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UnileverIndustries
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735$5,000+50 - 249 employeesHuntington Beach, CAAmbsan Digital is a mobile application development company launched in 2025. Their midsize team is based in Huntington Beach, California; Mississauga, Canada and Karachi, Pakistan and offers Mobile App Development, Custom Software Development, IT staff augmentation, UX/UI Design, and more.Read More
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736$5,000+10 - 49 employeesSan Mateo, CARead More
Located in San Mateo, California and Beograd, Serbia, Action Engine is a software development firm. They offer custom software development, web development, ux/ui design, mobile app development, and more and were launched in 2017.
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737$25,000+2 - 9 employeesLos Angeles, CATOPCONE INC is a software development firm. The firm is in Los Angeles, California. Their services include Custom Software Development and Mobile App Development.Read More
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738$1,000+2 - 9 employeesLaguna Beach, CAThink GenC is a Denpasar, Indonesia-based web development company. They specialize in Web Development, Web Design, UX/UI Design, Graphic Design, and more and were established in 2022.Read More
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739$1,000+10 - 49 employeesSan Francisco, CABritelite is a software development company established in 2013. Their team offers Custom Software Development and AR/VR development.Read More
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740Undisclosed10 - 49 employeesSacramento, CABased in Sacramento, California, Graviton Consulting Services is a Staffing company. They provide Staffing and Custom Software Development.Read More
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741Undisclosed10 - 49 employeesAnaheim, CAIn Anaheim, California, Pac Comm Technologies is an IT managed services company. Their services include IT managed services and Custom Software Development.Read More
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742Undisclosed10 - 49 employeesCoronado, CAJoint Tactics and Technologies is a Cybersecurity company. In Coronado, California, their small team specializes in Cybersecurity and Custom Software Development. The firm was founded in 2010.Read More
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743Undisclosed10 - 49 employeesIrvine, CAStratus Meridian is a cloud consulting & SI company. Their small team is in Irvine, California. Their team specializes in cloud consulting & SI and API Development.Read More
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744Undisclosed10 - 49 employeesSan Jose, CASolution Sources Programming, an Application Testing company, was launched in 1990. The small team provides Application Testing and Custom Software Development.Read More
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745Undisclosed50 - 249 employeesSan Diego, CASimplexity Product Development, Inc. Is a midsize San Diego, California-based Product Design company. Their services include Product Design and Custom Software Development.Read More
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746Undisclosed50 - 249 employeesUpland, CAInent Inc is a SEO company founded in 2010. The team offers Search Engine Optimization and IT staff augmentation.Read More
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747Undisclosed50 - 249 employeesCampbell, CANextbrick Inc. Is a Content Marketing company. The midsize Campbell, California-based team focuses on Content Marketing and cloud consulting & SI. The company was launched in 2019.Read More
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748$1,000+10 - 49 employeesSacramento, CAELEK+RIK is a Fort Lauderdale, Florida-based application development company. The small team focuses on Mobile App Development, Web Development, Artificial Intelligence, Custom Software Development, and more. The company was established in 2010.Read More
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Amgen, NFL, Mercedes, Korean Air, Sky Therapist, Doctor on Demand, BMW, Rakuten, Vivadere, VeChainIndustries
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749$25,000+50 - 249 employeesSan Francisco, CAKevuru Games is a software development company launched in 2012. The agency offers Custom Software Development, Mobile App Development, Other Application Development, and UX/UI Design and has a midsize team. The agency is headquartered in Kyiv, Ukraine; San Francisco, California and Warszawa, Poland.Read More
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750$25,000+250 - 999 employeesMilpitas, CAVeltris is a big data analytics company based in Milpitas, California; Hyderabad, India and Hyderabad, India. The midsize agency was launched in 2023. Their team provides BI & big data consulting & SI, ux/ui design, product design, custom software development, and more.Read More
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