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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91$25,000+250 - 999 employeesLos Angeles, CAInsight is a midsize cloud consulting & SI company. Founded in 2000, the company is based in Los Angeles, California; Kerala, India; Yerevan, Armenia and Lytchett Matravers, England. Their team focuses on cloud consulting & SI, unified communications consulting & SI, IT strategy consulting, Custom Software Development, and more.Read More
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Colgate-PalmoliveIndustries
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92$50,000+10 - 49 employeesSan Francisco, CARead More
Dayspring Technologies is a custom software and web development firm founded in 1997. They have just under 30 employees based in their San Francisco office. Much of their work focuses on custom software development for in-house platforms, but they also build client-side web apps, user interfaces, and e-commerce platforms.
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American Red CrossIndustries
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93$1,000+2 - 9 employeesIrvine, CARead More
Pacific Codeline LLC, a web development company, is in San Clemente, California. The small team focuses on web development, custom software development, mobile app development, Artificial Intelligence, and more and was established in 2021.
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Lettering.com IncIndustries
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94$25,000+10 - 49 employeesLos Angeles, CAPasciVite is an user experience design agency. They are headquartered in San Francisco, California; Los Angeles, California; Detroit, Michigan and Montréal, Canada and have a small team that offers UX/UI Design, Public Relations, and Custom Software Development. The agency was launched in 2016.Read More
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Kleiner PerkinsIndustries
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95$1,000+50 - 249 employeesSunnyvale, CALaunched in 2016, Protofire is a Blockchain company. The midsize team specializes in Blockchain and Custom Software Development. The company is based in Sunnyvale, California.Read More
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96$5,000+10 - 49 employeesSacramento, CAAyatas Technologies is a custom software development firm located in Sacramento, California. The company specializes in Custom Software Development, E-Commerce Development, Web Design, and Web Development and has a small team.The company was launched in 2007.Read More
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Straight Talk Lameise Seamless Health & Aesthetics Outdoor Media BuyersIndustries
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97Undisclosed2 - 9 employeesPenn Valley, CARead More
SP Marketplace is a software development company based in Penn Valley, Calif., with another office in Sacramento, Calif. Founded in 2012, SP Marketplace specializes in providing custom software development, application development, and application management services to IT companies and nonprofits.
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Coconino CountyIndustries
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98$5,000+2 - 9 employeesLos Angeles, CARead More
Monkey Kode is a small website development company located in Los Angeles, California. They provide web development, custom software development, e-commerce development, and web design and were founded in 2012.
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99$100,000+10 - 49 employeesSan Diego, CASeamgen is an UX design agency. Launched in 2008, the team offers UX/UI Design, Mobile App Development, Custom Software Development, Web Development, and more. Their small firm is based in San Diego, California and San Diego, California.Read More
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MedImpact,Industries
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100$10,000+2 - 9 employeesMission Viejo, CARead More
Calibec is a small custom software development firm. Founded in 2021, the team offers custom software development, web development, mobile app development, enterprise app modernization, and more. The agency is located in Mission Viejo, California.
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101$25,000+10 - 49 employeesTruckee, CANew Leaders is a small custom software development company. They focus on Custom Software Development, UX/UI Design, E-Commerce Development, Mobile App Development, and more and were founded in 2007. The agency is in Truckee, California and Beijing City, China.Read More
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Appfolio.comIndustries
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102$25,000+10 - 49 employeesSan Diego, CARead More
Website development firm Alliance Innovations is located in San Diego, California. The small agency was founded in 2019. Their team focuses on web development, digital strategy, custom software development, mobile app development, and more.
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103$5,000+10 - 49 employeesLos Angeles, CAVermillion Tech is a social media marketing agency and website development company. Their small team is headquartered in Surat, India. The firm specializes in social media marketing and web development. The firm was established in 2023.Read More
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V&V JeweldiamIndustries
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104$10,000+50 - 249 employeesSan Luis Obispo, CARead More
Hathway is a mobile app development company that was founded in 2007. They are headquartered in Obispo, Canada and are currently made up of 240 employees. The company specializes in mobile app development, custom software design, and web design and work primarily with large enterprises and midmarket sized firms.
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Applied MaterialsIndustries
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105Undisclosed50 - 249 employeesSan Francisco, CARead More
Martian Craft is a user experience design company established in 2010. The company provides ux/ui design, cloud consulting & SI, custom software development, web development, and more and has a midsize team.
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AppleIndustries
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106$50,000+10 - 49 employeesIrvine, CARead More
Company A is a custom application development company based in Irvine, Calif., with offices in Plano, Texas, and Novi Sad, Serbia. The company, founded in 2015, has a team of more than ten that provides cloud consulting & SI, custom software development, web development, mobile app development, and enterprise app modernization services. Company A serves small and larger-sized companies in various industries, including IT, financial services, and health care & medical.
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107$25,000+10 - 49 employeesPetaluma, CAUser experience design company Beyond Labs LLC is located in Petaluma, California and Ahmedabad, India. The small team offers UX/UI Design, Product Design, Custom Software Development, and Web Development and was founded in 2025.Read More
Clients
Bolt.com AISWAPR Volvo Cars of Canada Ltd AmagiIndustries
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108$10,000+50 - 249 employeesLos Angeles, CARead More
DevTeam.Space is a development agency that was founded in 2015 and is based in Los Angeles. Their team of 8 specialize in web development and mobile app development for small businesses; these clients primarily reside in the advertising, business services, and consumer product industries.
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AirbusIndustries
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109$10,000+10 - 49 employeesSan Francisco, CAIT strategy consulting company Techlexity was founded in 2019. Located in L'viv, Ukraine and San Francisco, California, their small team provides IT strategy consulting, Custom Software Development, Web Development, Mobile App Development, and more.Read More
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110$50,000+10 - 49 employeesSolana Beach, CARead More
Kromeon is a software development firm based in Encinitas, Calif. and was founded in 2015. Their team of 4 employees specializes in custom software development, CRM consulting, and eCommerce development.
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NFLIndustries
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111$5,000+50 - 249 employeesEl Dorado Hills, CARead More
UniWebb Software is a mobile and web development company based in Elk Grove, CA and was founded in 2011. UniWebb has a small team of fewer than five employees that focuses on providing mobile app development, web development, and custom software development services, exclusively to small businesses.
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BaierIndustries
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112$25,000+2 - 9 employeesSan Francisco, CARead More
Brechin.dev is an user experience company launched in 2015. They are based in Seattle, Washington and have a small team. The company focuses on ux/ui design, web development, mobile app development, and custom software development.
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113Undisclosed10 - 49 employeesRiverside, CAStudio 12 is a small software development firm headquartered in Riverside, California. They focus on Custom Software Development, Web Development, Mobile App Development, cloud consulting & SI, and more and were launched in 2013.Read More
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114Undisclosed50 - 249 employeesCalabasas, CABased in Calabasas, California, Faye is a CRM consulting and SI company. Established in 2010, the midsize team provides CRM consulting and SI, Low/No Code Development, Custom Software Development, and AI Consulting.Read More
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115$5,000+10 - 49 employeesLos Angeles, CAClearFuze Networks, Inc. Is an IT managed services company launched in 2002. The small team focuses on IT managed services, Cybersecurity, IT strategy consulting, Custom Software Development, and more. The company is in Los Angeles, California.Read More
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116$10,000+50 - 249 employeesSan Mateo, CAIT staff augmentation company Genium is located in San Mateo, California and New York, New York. The midsize team specializes in IT staff augmentation, Custom Software Development, Mobile App Development, and Artificial Intelligence. The agency was launched in 2011.Read More
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ShopPogoEclipseIndustries
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117$10,000+10 - 49 employeesNewport Beach, CAWebloo is a digital strategy company launched in 2016. They are in Newport Beach, California and have a small team. The firm specializes in digital strategy, web design, ux/ui design, custom software development, and more.Read More
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118$5,000+50 - 249 employeesNewark, CARead More
DevBatch is an IT company founded in 2010. Located in Lahore, Pakistan, they have a team of 118 employees. Their services include mobile app development, custom software development, web development, and SEO. They primarily serve small business and midmarket clients.
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EnlivenedIndustries
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119$25,000+50 - 249 employeesWest Hollywood, CARead More
VentureDevs is an IT agency founded in 2016. They are headquartered in West Hollywood, Calif., with a second location in Poznan, Poland. Their team of 73 specializes in mobile app, web, custom software development, and more for primarily midmarket clients.
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UberIndustries
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120$10,000+2 - 9 employeesLong Beach, CALost Horse Labs, a small software development company, is headquartered in Yucca Valley, California; Long Beach, California and Joshua Tree, California. Founded in 2024, the team specializes in Custom Software Development, Branding, Web Design, UX/UI Design, and more.Read More
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