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.
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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1291$1,000+50 - 249 employeesSan Diego, CACallZent is a Market Research company launched in 2023. The company specializes in Market Research, Customer Service Outsourcing, Call Center Services, Custom Software Development, and more and has a midsize team.Read More
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1292$1,000+250 - 999 employeesGlendale, CATechMatter is a midsize IT managed services company. Based in Glendale, California; Pittsburgh, Pennsylvania; Harrow, England and Dubai, United Arab Emirates, the agency was founded in 2017. Their team provides IT managed services, IT staff augmentation, Custom Software Development, Mobile App Development, and more.Read More
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1293$10,000+10 - 49 employeesHuntington Beach, CAAlokin is a software development company founded in 2011. Their services include Custom Software Development and Web Development.Read More
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1294$5,000+10 - 49 employeesSan Francisco, CALocated in Milano, Italy and San Francisco, California, WebRatio is a custom software development company. They focus on Custom Software Development and Mobile App Development.Read More
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1295$50,000+250 - 999 employeesPalo Alto, CARead More
InApp was founded in 2000 and currently has 300+ employees. Headquartered in Trivandrum, India, their services include web development, custom software development, and mobile app development. They also have another location in Palo Alto, Calif.
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1296Undisclosed10 - 49 employeesLos Angeles, CAHuman is an Advertising company. They are located in Boulder, Colorado and Los Angeles, California. Their team focuses on Advertising and Custom Software Development.Read More
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1297$5,000+10 - 49 employeesLos Angeles, CAKento Systems is a small Accounting company. Launched in 1990, the team offers Accounting and Branding.Read More
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1298Undisclosed10 - 49 employeesRiverside, CAConstantMD Inc. Is a social media marketing agency. Established in 2010, their team provides Social Media Marketing and Search Engine Optimization.Read More
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1299Undisclosed10 - 49 employeesLong Beach, CAEnsymbios, Inc. Is an IT strategy consulting company. The team offers IT strategy consulting and CRM consulting and SI and is based in Long Beach, California.Read More
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1300Undisclosed10 - 49 employeesLos Angeles, CAFounded in 1991, Sysnet Solutions is a small Los Angeles, California-based cloud consulting & SI company. Their services include cloud consulting & SI and Cybersecurity.Read More
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1301Undisclosed10 - 49 employeesPasadena, CALocated in Pasadena, California, Cybertegic is a small Email Marketing company. Their services include Email Marketing and Search Engine Optimization.Read More
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1302$5,000+50 - 249 employeesDaly City, CARead More
Founded in 2008, Tech4biz Solutions Private Limited is a midsize web design company headquartered in Bengaluru, India and Daly City, California. Their services include web design, custom software development, IoT development, Artificial Intelligence, and more.
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1303Undisclosed250 - 999 employeesIrvine, CARead More
Authority Partners is a software firm based in Irvine, Calif. with more than 250 employees. They are experts in UX/UI design, IT managed services, and custom software development for various clients.
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ArtisIndustries
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1304$10,000+250 - 999 employeesLos Angeles, CACustom software development company Shinetech Software is headquartered in Beijing, China; Sydney, Australia; Melbourne, Australia and London, England. The midsize company was launched in 2001. Their team provides Custom Software Development, IT staff augmentation, Enterprise App Modernization, and Artificial Intelligence.Read More
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Barts Health NHS TrustIndustries
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1305$10,000+50 - 249 employeesUnion City, CACloudpacer Inc, a custom software development company, specializes in Custom Software Development and Web Development. The company is in Union City, California and Lahore, Pakistan.Read More
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1306$5,000+2 - 9 employeesSan Jose, CALocated in San Jose, California and Chandigarh, India, Frisco Web Solutions is a small SEO agency. Their services include Search Engine Optimization and Web Design.Read More
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1307$10,000+1,000 - 9,999 employeesSanta Clara, CAMosChip is a custom software development firm. They are in Hyderabad, India and Bengaluru, India, and their services include Custom Software Development and Other Application Development.Read More
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1308Undisclosed250 - 999 employeesPleasanton, CAFounded in 2005, Folio3 Software is a midsize Pleasanton, California-based custom software development firm. Their team offers Custom Software Development and Web Development.Read More
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1309$100,000+10 - 49 employeesRedwood City, CARead More
Accelerance is a software development firm. Founded in 2001, the small agency is located in Redwood City, California; Charlotte, North Carolina; Buenos Aires, Argentina and Monterrey, Mexico. Their team specializes in Custom Software Development, Mobile App Development, Artificial Intelligence, Generative AI, and more.
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AcrowireIndustries
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1310$10,000+10 - 49 employeesLos Angeles, CACitrusbyte, a small website development firm, is based in Los Angeles, California and New York, New York. The team focuses on Web Development and Custom Software Development.Read More
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1311$10,000+2 - 9 employeesSolana Beach, CAType G is an Advertising company. Their small team is located in Solana Beach, California. Their services include Advertising and Branding.Read More
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1312$5,000+2 - 9 employeesSanta Rosa, CAGraphicSmith is a SEO company based in Santa Rosa, California. Founded in 1983, the team offers Search Engine Optimization and Web Design.Read More
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1313$5,000+2 - 9 employeesSacramento, CASmall web design company Lake WebWorks, is located in Sacramento, California. The team offers Web Design and Web Development.Read More
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1314Undisclosed2 - 9 employeesLakewood, CABranding agency Senarysoft was established in 2012. The company specializes in Branding and Web Design.Read More
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1315Undisclosed2 - 9 employeesTemecula, CAWolfe Interactive, Inc., a social media marketing company, focuses on Social Media Marketing and Content Marketing. The agency is based in Temecula, California.Read More
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1316Undisclosed2 - 9 employeesClovis, CAMoreseos is a small Clovis, California-based user experience design company. Their services include UX/UI Design and Graphic Design.Read More
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1317Undisclosed2 - 9 employeesSanta Monica, CAWebRotate 360 LLC is a SEO services firm. The team offers Search Engine Optimization and Pay Per Click, and the firm is in Santa Monica, California.Read More
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1318Undisclosed10 - 49 employeesPalo Alto, CAA Society US is a Business Consulting company. They were founded in 2011 and specialize in Business Consulting and Engineering.Read More
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1319$25,000+250 - 999 employeesSan Francisco, CARobosoft Technologies Inc. Is a San Francisco, California-based app development company. They offer Mobile App Development, UX/UI Design, Web Development, Custom Software Development, and more and were launched in 1996.Read More
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Warner Bros. Discovery HSBC McDonalds Mercury FinanceIndustries
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1320$100,000+1,000 - 9,999 employeesSan Francisco, CARead More
Headquartered in San Francisco, Wizeline is a global technology services provider with delivery centers in Mexico, Colombia, Spain, and Vietnam. Since its founding in 2014, Wizeline has grown to over 1,300 employees specializing in product/platform development, UX design, data & AI, cloud & DevOps, and product evolution services.
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