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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91$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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92$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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93$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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94Undisclosed50 - 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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95$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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96$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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97$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
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Bolt.com AISWAPR Volvo Cars of Canada Ltd AmagiIndustries
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98$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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99$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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100$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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101$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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102$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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103$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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104Undisclosed50 - 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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105Undisclosed10 - 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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106$10,000+10 - 49 employeesIrvine, CARead More
Digital Solutions is a Newport Beach, California-based user experience design agency. The small company was launched in 2016. Their team provides ux/ui design, custom software development, web development, mobile app development, and more.
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107$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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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+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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110$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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111$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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112$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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113$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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114$50,000+10 - 49 employeesSan Diego, CARead More
Achieve Internet is a software development company that's headquartered in San Diego; they have another office in Los Angeles. Founded in 2002, Achieve Internet does web development, enterprise content management, sales intelligence, enterprise app modernization, CRM consulting, and e-commerce development. Clients are mostly midmarket companies and in the healthcare and arts and entertainment sectors. They have about 41 employees.
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DexcomIndustries
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115$1,000+10 - 49 employeesRoseville, CARead More
I-Tul Design & Software, Inc. is a software design and development company that was started in 1999. The 11-person team operates out of Roseville, Calif. where they provide custom software development as well as web design and development services to small and mid-sized businesses.
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Corp2000Industries
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116$25,000+10 - 49 employeesOakland, CARead More
Founded in 1999, LION Interactive is a full-service digital agency based in Berkeley, Calif. They are a smaller agency with just under 20 employees. LION's practice focuses on user experience and interface (UI/UX) design, web design, and custom software and web app development. They also develop applications for all relevant mobile and e-commerce platforms.
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Urban Land InstituteIndustries
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117$10,000+10 - 49 employeesSan Francisco, CARead More
Custom software development company Singula team was founded in 2022. The small team specializes in custom software development, web development, CRM consulting and SI, ERP consulting and SI, and more. The firm is in San Francisco, California.
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118$5,000+10 - 49 employeesGlendale, CASmall custom software development company Skillian, is headquartered in Yerevan, Armenia and Glendale, California. Launched in 2020, the team specializes in Custom Software Development, cloud consulting & SI, and Web Development.Read More
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119$5,000+10 - 49 employeesMountain View, CARead More
YouTeam is a marketplace for hiring remote software development contractors. Founded in 2014, YouTeam is headquartered in London, with an additional office in Lviv, Ukraine. YouTeam's staff of around 20 specializes in web development, custom software development, and mobile app development, primarily for enterprise and midmarket clients in business services and education.
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PwCIndustries
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120$10,000+50 - 249 employeesSan Diego, CARead More
Based in San Diego, Calif., PINT, Inc. is a full-service development firm. Founded in 1994, they have about 45 employees that specialize in web development, web design, custom software development, and UX/UI design. The firm mainly works with clients in the healthcare field.
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CooperVisionIndustries
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