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.
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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151$10,000+250 - 999 employeesMilpitas, CARead More
Founded in 2014, Teksun Inc. is a product engineering services company. Their team of around 25 employees is based in San Jose, Calif., with an additional office in Ahmedabad, India. They focus on IoT development, product design, and cloud consulting.
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QEPRIndustries
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152Undisclosed10 - 49 employeesLos Angeles, CAMargasoft is a small Los Angeles, California-based Litigation Support Services company. They specialize in Litigation Support Services, Custom Software Development, Artificial Intelligence, IT managed services, and more and were established in 2005.Read More
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Johnson & JohnsonIndustries
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153$10,000+2 - 9 employeesPasadena, CAGeekOffice, a , was founded in 2019. Headquartered in Sheridan, Wyoming, their small team specializes in.Read More
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154$5,000+10 - 49 employeesSan Francisco, CADreamX, a small mobile application development firm, is located in San Francisco, California. Established in 2022, the team focuses on Mobile App Development, Custom Software Development, Web Development, IoT development, and more.Read More
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Pladri Greek Time Corp. PropTexxIndustries
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155$1,000+10 - 49 employeesLos Angeles, CARead More
Digital Octane is an e-commerce development company based in Los Angeles, California. They focus on e-commerce development, web development, ux/ui design, web design, and more and were established in 2015.
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156$10,000+50 - 249 employeesFremont, CARead More
Agile Soft Systems, Inc, a custom software development firm, was launched in 2012. Their midsize team is headquartered in Fremont, California. Their services include custom software development, application testing, blockchain, enterprise app modernization, and more.
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157$5,000+10 - 49 employeesSacramento, CARead More
Konnectryx is a small Sacramento, California-based software development firm. They offer custom software development, CRM consulting and SI, e-commerce development, and cloud consulting & SI and were launched in 2012.
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158$10,000+10 - 49 employeesSanta Monica, CARead More
PhD Labs is a web and mobile app development company from Irvine, CA. The team of 10+ has been overcoming business challenges and driving results with digital solutions since 1998.
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Bank of AmericaIndustries
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159$1,000+50 - 249 employeesFremont, CARead More
4 Way Technologies is an application development company. They offer mobile app development and were founded in 2012. Their midsize team is in Noida, India and Fremont, California.
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160$10,000+10 - 49 employeesLos Angeles, CARead More
Alena Solutions is an e-commerce development firm based in Woodland Hills, Calif. Founded in 2016, their team of 30 serves clients in the e-commerce and automotive sectors. Services include custom software development and web development.
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HP TunersIndustries
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161$1,000+10 - 49 employeesSan Francisco, CALaunched in 1998, Help4Access (Microsoft Access Technical Support) is an IT managed services company. The small San Francisco, California-based team offers IT managed services, unified communications consulting & SI, custom software development, and IT staff augmentation.Read More
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162$1,000+2 - 9 employeesLos Angeles, CARead More
Themis Web Technologies is a software development company based in Los Angeles, California. Founded in 2007, they are a sole proprietorship that provides web development, e-commerce development, custom software development, and enterprise app modernization.
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Incited MediaIndustries
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163$1,000+50 - 249 employeesSan Francisco, CAPerimattic is a midsize San Francisco, California-based artificial intelligence company. Founded in 2022, the team focuses on Artificial Intelligence, BI & big data consulting & SI, cloud consulting & SI, Custom Software Development, and more.Read More
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164$25,000+50 - 249 employeesNewark, CACalibraint Technologies is a Chennai, India-based blockchain company. The midsize team focuses on blockchain, custom software development, Artificial Intelligence, application management & support, and more and was launched in 2015.Read More
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165$25,000+10 - 49 employeesDaly City, CARead More
Software development firm Talos Digital is located in Medellín, Colombia and Austin, Texas. The midsize team specializes in custom software development, ux/ui design, mobile app development, web design, and more and was founded in 2011.
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166$5,000+50 - 249 employeesSacramento, CARead More
West Advanced Technologies Inc is a midsize Sacramento, California-based cybersecurity company. The team specializes in cybersecurity, IT staff augmentation, cloud consulting & SI, and IT managed services.
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167$25,000+10 - 49 employeesSan Diego, CARead More
NoMoBo is a San Diego-based software company founded in 2017 with more than 10 members. They specialize in custom software, web, and mobile app development services for small and mid-market firms in industries such as real estate, IT, and utilities.
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HOA MessengerIndustries
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168$10,000+10 - 49 employeesLos Angeles, CARead More
Launched in 2007, Formula is a IT strategy consulting company. The large team provides IT strategy consulting, BI & big data consulting & SI, cloud consulting & SI, IT staff augmentation, and more. The agency is headquartered in Los Angeles, California.
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169$50,000+10 - 49 employeesLos Angeles, CARead More
The Development Factory is a software development firm based in Los Angeles, with a branch office in Toronto. Founded in 2009. With a team of 10, The Development Factory specializes in custom software development, mobile development, product design and more.
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Givsum - Empowering every person to be a force for goodIndustries
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170$10,000+2 - 9 employeesLos Angeles, CARead More
InfiniOne is a software development agency that has been offering mobile app development, custom software development, and web development services to their clients in the financial services, business services, and e-commerce industries since 2012. Their team of 10 employees are based out of their offices in Los Angeles, Beverly Hills, Calif., and Liberty, Pakistan.
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SkinnygirlIndustries
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171$1,000+50 - 249 employeesSan Mateo, CARead More
PEARL ORGANISATION is a midsize custom software development company headquartered in Dehradun, India. Launched in 2011, the team provides custom software development, e-commerce development, web design, application testing, and more.
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172$5,000+1,000 - 9,999 employeesSan Francisco, CARead More
Established in 2011, AppTecHub is a large mobile application development company. Their team offers mobile app development, web development, and custom software development. The agency is located in San Francisco, California.
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173$1,000+50 - 249 employeesAlbany, CARead More
ESP Inspire is an e-commerce firm based in Albany, Calif. Founded in 2001, their team of 150 serves clients in the e-commerce, and consumer products sectors. Services include corporate identity, content development, and WooCommerce development.
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174$50,000+2 - 9 employeesBerkeley, CAQuant Five LLC is a website development company launched in 2017. They are in Berkeley, California and have a small team. Their services include web development, ux/ui design, blockchain, mobile app development, and more.Read More
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175$10,000+2 - 9 employeesRedding, CARead More
Ebbex is a mobile app development company that was founded in 2010. The company is headquartered in San Luis Obispo, Calif. and is made up of 5 employees. They specialize in mobile app development, custom software development, and UX/UI design and primarily serve midmarket clients in the education, government, and IT industries.
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AmazonIndustries
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176$1,000+50 - 249 employeesWalnut Creek, CARead More
Anyalpha is a midsize custom software development company located in Walnut Creek, California. Launched in 2013, the team specializes in custom software development, mobile app development, web development, AR/VR development, and more.
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177$25,000+50 - 249 employeesLos Angeles, CAIntegrated Digital Solutions is a midsize Los Angeles, California-based software development firm. Their services include Custom Software Development and cloud consulting & SI.Read More
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AT&T DirecTV Boeing CiscoIndustries
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178$5,000+10 - 49 employeesRancho Cordova, CARead More
Techinate Solutions, Inc. is a IT consulting firm located in Cordova, Calif. They have a team of around 10 employees and were founded in 1999. They provide custom software and web development services, and IT managed services.
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United Reporting Publishing CorporationIndustries
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179$25,000+50 - 249 employeesLos Angeles, CACandour Technolabs is an artificial intelligence development company. In Dubai, United Arab Emirates and Los Angeles, California, their midsize team specializes in Artificial Intelligence, Blockchain, Mobile App Development, Custom Software Development, and more. The agency was established in 2011.Read More
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180$1,000+2 - 9 employeesRancho Cucamonga, CACallstack Labs is a software development company. Launched in 2024, the team offers Custom Software Development, Web Development, and Artificial Intelligence. Their small firm is Rancho Cucamonga, California-based.Read More
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