Top 100 Software Development Companies in California
The Best of December 2025Looking 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 is a software development firm. Their small team is located in Irvine, California. The firm specializes in Custom Software Development, Mobile App Development, UX/UI Design, E-Commerce Development, and more.Read More
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$25,000+10 - 49 employeesMedina, WAFlower Press Interactive is a small user experience agency launched in 2001. Their team offers UX/UI Design, Mobile App Development, Custom Software Development, Web Development, and more. The company is located in Medina, Washington.Read More
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$10,000+10 - 49 employeesJohannesburg, South AfricaRead More
Mobile application development firm CubeZoo was established in 2011. In Johannesburg, South Africa and London, England, their small team specializes in Mobile App Development, Web Development, Artificial Intelligence, UX/UI Design, and more.
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1111Undisclosed2 - 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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1112$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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1113$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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1114Undisclosed250 - 999 employeesSan Francisco, CARead More
Projekt202 is a software development and marketing company based in Addison, Texas. They were founded in 2003 and have a team of 285 employees. They specialize in custom software development, UX/UI design, and mobile app development to improve their client’s customer and employee experiences.
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VontoIndustries
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1115Undisclosed250 - 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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1116$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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1117$5,000+50 - 249 employeesSan Jose, CAAdvanced Business Solutions | SAP Partner is an ERP consulting and SI company launched in 2010. The firm specializes in ERP consulting and SI and Custom Software Development.Read More
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1118Undisclosed10 - 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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1119$50,000+50 - 249 employeesFreeport, NYData analytics company inVerita is based in L'viv, Ukraine; London, England; Freeport, New York and Chicago, Illinois. They specialize in BI & big data consulting & SI, IT staff augmentation, Custom Software Development, and Artificial Intelligence and were founded in 2015.Read More
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Perforce, Methodics, Mediashout, Kroger Group, HILTI, Scrafts, Dilligend, OpenLogic, Perfecto, Government of SA, WGSN, numerous YCombinator-backed startupsIndustries
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1120$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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1121$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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1122Undisclosed2 - 9 employeesSan Francisco, CAMouth-Wash.co is a software development firm. Their small team is based in San Francisco, California. Their team provides Custom Software Development and Mobile App Development.Read More
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1123Undisclosed2 - 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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1124Undisclosed2 - 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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1125Undisclosed2 - 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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1126$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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1127$10,000+50 - 249 employeesSan Francisco, CARead More
NovaLab Tech is a midsize mobile application development company. They offer mobile app development, custom software development, web development, and IT staff augmentation and were launched in 2019.
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1128Undisclosed10 - 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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1129$5,000+50 - 249 employeesSan Francisco, CADigis, a Fiverr company (NYSE: FVRR) is a custom software development company and web development firm. Launched in 2015, the team offers Custom Software Development and Web Development. Their midsize firm is 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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1130Undisclosed10 - 49 employeesHonolulu, HITeraVault 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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1131$10,000+250 - 999 employeesGurugram, IndiaRead 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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1132$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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1133$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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1134$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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1135Undisclosed50 - 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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1136$1,000+50 - 249 employeesSaratoga, CARead More
Software Developers, Inc. is a software development company that was founded in 2007. They are headquartered in Saratoga, Calif., with secondary locations in Melbourne, Australia, Mumbai, India, and London, England. The company has 94 employees and specializes in mobile app development, custom software development, and UX/UI design. They serve all levels of clientele in the business services and entertainment industries.
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PepsiIndustries
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1137Undisclosed50 - 249 employeesSan Francisco, CAIn San Francisco, California and Paris, France, TrustInSoft is a midsize data analytics company. Their services include BI & big data consulting & SI and Cybersecurity.Read More
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1138Undisclosed50 - 249 employeesSan Francisco, CAUniform Systems, Inc. Is a CRM consulting and SI company. Based in San Francisco, California and Berlin, Germany, their team focuses on CRM consulting and SI and Custom Software Development.Read More
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1139$10,000+50 - 249 employeesSan Francisco, CAMANGOSOFT is a midsize e-commerce development company in Kyiv, Ukraine; San Francisco, California; Dover, Delaware and Warszawa, Poland. They provide E-Commerce Development, Mobile App Development, Custom Software Development, AI Consulting, and more and were established in 2016.Read More
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MeethoneybeeIndustries
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1140$25,000+50 - 249 employeesWarszawa, PolandMobile app development firm Orangesoft is based in Warszawa, Poland; Sheridan, Wisconsin and San Francisco, California. The midsize company was established in 2011. Their team offers Mobile App Development, Custom Software Development, Web Development, and IoT development.Read More
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Hamleys Yukon Advanced Optics Worldwide CoachNow Liquid BarcodesIndustries
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