Top 100 Software Development Companies in California
The Best of July 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 software development company, is located in Irvine, California. The small team provides Custom Software Development, Mobile App Development, and UX/UI Design and was founded in 2017.Read More
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$10,000+10 - 49 employeesMedina, WAFlower Press Interactive is a Medina, Washington-based UX agency. The small team focuses on UX/UI Design, Mobile App Development, Custom Software Development, Web Design, and more and was established in 2001.Read More
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1201Undisclosed10 - 49 employeesCorte Madera, CAApplication Testing company Critical Logic is headquartered in Corte Madera, California. Their services include Application Testing and Custom Software Development.Read More
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1202Undisclosed10 - 49 employeesTemecula, CALaunched in 1996, Umetech, Inc. Is a small IT strategy consulting company located in Temecula, California. Their team provides IT strategy consulting and cloud consulting & SI.Read More
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1203$5,000+50 - 249 employeesMountain View, CAKeyPoint Technologies is an user experience agency. They were founded in 2004 and provide UX/UI Design and Translation.Read More
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1204$1,000+2 - 9 employeesLos Angeles, CACodeger is a web design company founded in 2018. The team focuses on Web Design and Web Development and is headquartered in Delhi, India and Toronto, Canada.Read More
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1205$10,000+1,000 - 9,999 employeesMenlo Park, CATrantor Inc. Is an app development company launched in 2012. Their large team is located in Menlo Park, California; Chandigarh, India; Vancouver, Canada and Heredia, Costa Rica. Their services include Mobile App Development, Custom Software Development, Web Development, BI & big data consulting & SI, and more.Read More
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GenpactIndustries
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1206$1,000+50 - 249 employeesHuntington Beach, CAAmbsan Technologies is a Karachi, Pakistan-based custom software development company. The team provides Custom Software Development and Mobile App Development.Read More
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1207$5,000+2 - 9 employeesCarlsbad, CACode By Design is a website development company. Based in West Palm Beach, Florida and New York, New York, the team specializes in Web Development and E-Commerce Development.Read More
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1208$25,000+50 - 249 employeesAgoura Hills, CATechAhead is an app development firm. They are based in Agoura Hills, California; Noida, India and Dubai, United Arab Emirates and have a midsize team. The agency offers Mobile App Development, Artificial Intelligence, Custom Software Development, and IoT development.Read More
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AXA University of Toronto Audi American ExpressIndustries
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1209$5,000+50 - 249 employeesSan Diego, CAApplication development firm Qodestar was established in 2022. They are based in Seattle, Washington; Nashville, Tennessee; New York, New York and Tampa, Florida and have a midsize team. Their services include Mobile App Development, UX/UI Design, Mobile & App Marketing, Product Design, and more.Read More
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1210Undisclosed2 - 9 employeesFolsom, CAFounded in 2003, Sophus Consulting is a small IT strategy consulting company. Their services include IT strategy consulting and ECM consulting and SI.Read More
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1211$5,000+10 - 49 employeesPasadena, CAIn Akron, Ohio and Pasadena, California, ipsoCreative is a small custom software development company. Their services include Custom Software Development and Graphic Design.Read More
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1212$5,000+50 - 249 employeesSanta Clara, CARead More
A product engineering services company located in Indore, Madhya Pradesh, India, 47Billion works frequently with small businesses, middle-market companies, and enterprises. The company focuses on industries such as information technology, advertising, gaming, and consumer products and has 76 employees. Established in 2014, 47Billion specializes in BI & Big Data consulting, UX/UI design, mobile app development, and cloud consulting.
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CiscoIndustries
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1213Undisclosed250 - 999 employeesSan Diego, CAArtificial intelligence company Integrant, Inc. Is located in San Diego, California. They focus on Artificial Intelligence and Application Testing and were established in 1992.Read More
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1214$1,000+10 - 49 employeesSan Francisco, CARead More
Alternova is a software development studio based in Medellin, Colombia, with an office in San Francisco. The studio, founded in 2019, has a team of around 20 that provides custom software development, web design & development, AR/VR development, mobile app development, and e-commerce development services. Alternova serves enterprise and smaller-sized companies in the business services, gaming, real estate, and e-commerce industries.
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UCSFIndustries
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1215Undisclosed10 - 49 employeesSan Francisco, CAThe ID Co., a software development company, was launched in 2010. The small team focuses on Custom Software Development and IT managed services.Read More
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1216$1,000+2 - 9 employeesSanta Clara, CAIn Santa Clara, California, Informatics Outsourcing is a Back Office Outsourcing company. They offer Back Office Outsourcing and Custom Software Development.Read More
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1217$5,000+2 - 9 employeesSan Diego, CAITegrity Web Technologies is a San Diego, California-based SEO agency. Founded in 2002, the team provides Search Engine Optimization and Web Design.Read More
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1218Undisclosed2 - 9 employeesPalo Alto, CASmart IT Concepts is a custom software development company. The Palo Alto, California-based firm was established in 2009. Their services include Custom Software Development and Web Development.Read More
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1219Undisclosed2 - 9 employeesLos Angeles, CAAztecaNet Inc. Is a software development firm headquartered in Los Angeles, California. They focus on Custom Software Development and Web Development.Read More
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1220Undisclosed2 - 9 employeesPalo Alto, CAPurgo AI is an Application Testing company headquartered in Palo Alto, California. They focus on Application Testing and cloud consulting & SI.Read More
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1221$10,000+50 - 249 employeesLos Angeles, CAPingle Studio is a mobile app development firm established in 2007. Their services include Mobile App Development and Custom Software Development.Read More
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1222$5,000+50 - 249 employeesScotts Valley, CAAI company DianApps is headquartered in ST. Petersburg, Florida; Jaipur, India; Gurugram, India and Mindarie, Australia. The midsize team offers Artificial Intelligence, Generative AI, AI Agents, AI Consulting, and more and was established in 2017.Read More
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1223Undisclosed10 - 49 employeesSan Francisco, CALocated in Reading, United Kingdom and San Francisco, California, CRMT Digitlal is a digital strategy company. The small agency was launched in 1999. Their team specializes in digital strategy, CRM consulting and SI, other IT consulting and SI, email marketing, and more.Read More
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1224$5,000+50 - 249 employeesSan Francisco, CAFounded in 2015, Digis, a Fiverr company (NYSE: FVRR) is a custom software development company. The midsize team specializes in Custom Software Development, Web Development, and IT staff augmentation. The firm is based in London, England; New York, New York; București, Romania and L'viv, Ukraine.Read More
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Blablacar Hubspot PwC HumaIndustries
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1225Undisclosed10 - 49 employeesLos Angeles, CATeraVault Software is a Business Consulting company. Their team is based in Honolulu, Hawaii and Cebu City, Philippines and provides Business Consulting and BI & big data consulting & SI.Read More
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1226$5,000+10 - 49 employeesSan Jose, CACRM consulting and SI company Clone-Tech is in San Jose, California and Nairobi, Kenya. They focus on CRM consulting and SI and ERP consulting and SI and were founded in 2022.Read More
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1227$10,000+250 - 999 employeesLong Beach, CARead More
Queppelin is an IT solutions company based in Jaipur, India, and founded in 2010. They also have an office in Gurgaon, India. Their team of more than 200 employees specializes in AR/VR, mobile app, custom software, and web development for midmarket and small business companies. They mostly work with companies in the media, real estate, arts, and telecommunications industries.
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FacebookIndustries
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1228$25,000+50 - 249 employeesSan Francisco, CACloud Interactive is a software development company. The Taipei, Taiwan-based company focuses on Custom Software Development and AI Consulting.Read More
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1229$10,000+50 - 249 employeesMission Viejo, CARead More
Founded in 2013, AccelOne is an artificial intelligence firm. They are headquartered in Kirkland, Washington; Buenos Aires, Argentina and Mission Viejo, California and have a midsize team. The firm offers Artificial Intelligence, Generative AI, IT managed services, IT staff augmentation, and more.
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XapoIndustries
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1230Undisclosed50 - 249 employeesLos Angeles, CATech Holding, a data analytics company, was established in 2016. The company provides BI & big data consulting & SI and cloud consulting & SI, and is midsize.Read More
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