Top 100 Software Development Companies in California

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Top 100 Software Development Companies in California

The Best of December 2024

Looking 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. 

Jump to Most Reviewed Companies

List of the Best California Software Developers

  • 1
    (96 Reviews) 4.8
    • Timeliness

      4.7
    • Service Excellence

      4.9
    • Value

      4.5
    • Would Recommend

      4.9
    • $50,000+
    • 50 - 249 employees
    • Newport Beach, CA

    Saritasa is a full-source software development firm based in Newport Beach, Calif. With additional offices in New York City, Russia, and Vietnam. They were founded in 2005 and employ a team of about 90 who provide custom software, web, mobile, IoT, and AR/VR development for mostly mid-sized businesses.

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    Clients

    • iHeartMedia

    Industries

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  • 2
    (27 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      4.9
    • Value

      4.9
    • Would Recommend

      5.0
    • $25,000+
    • 50 - 249 employees
    • San Jose, CA

    Diffco is a company of world-class senior developers in Mobile, Web, and AI to launch, accelerate, and support your business applications. 13+ years of experience and 1000+ successfully launched projects. We succor our customers to become market leaders.

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    Clients

    • Mars
    • Chemtreat
    • Nokia
    • Instreamatic

    Industries

  • 3
    (32 Reviews) 4.8
    • Timeliness

      4.8
    • Service Excellence

      4.9
    • Value

      4.5
    • Would Recommend

      4.9
    • $50,000+
    • 250 - 999 employees
    • Irvine, CA

    Vincit California is a software development company that has provided mobile app development, custom software development, and UX/UI design services to their clients since 2007. Their team of 1,000 employees is based out of Irvine, Calif. With another office in Helsinki.

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    Clients

    • Splunk

    Industries

  • 4
    (52 Reviews) 4.9
    • Timeliness

      4.9
    • Service Excellence

      4.9
    • Value

      4.5
    • Would Recommend

      4.9
    • $50,000+
    • 1,000 - 9,999 employees
    • San Francisco, CA

    Toptal is a private network of freelance technologists and designers. With more than 2000 freelance workers in its exclusive community, Toptal can be instrumental in finding the right freelance partner for development projects. The community includes developers for any platform, finance experts, and designers of both visual material and graphic interfaces. Because of its screening process, Toptal combines the reliability and expertise of an agency with the flexibility and affordability of freelance work.

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    Clients

    • Toptal clients include J.P. Morgan

    Industries

  • 5
    (5 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $25,000+
    • 10 - 49 employees
    • El Segundo, CA

    Founded in 2001, Thinklogic is a development firm. Their small team is based in El Segundo, Calif. They focus on custom software, web, and mobile app development.

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    Clients

    • Johnson & Johnson

    Industries

  • 6
    (8 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      4.8
    • Would Recommend

      5.0
    • $10,000+
    • 10 - 49 employees
    • Irvine, CA

    Kingsmen Digital Ventures is a custom software development firm established in 2017. Their small team is based in Irvine, California and provides custom software development, ux/ui design, mobile app development, and web development.

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    Clients

    • Evolus

    Industries

  • 7
    (1 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $100,000+
    • 250 - 999 employees
    • Los Angeles, CA

    Founded in 2007, Theorem is a software development firm. The midsize team specializes in custom software development, ux/ui design, IoT development, IT strategy consulting, and more. The company is based in Los Angeles, California; Santa Monica, California; New York, New York and San Francisco, California.

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    Clients

    • AT&T

    Industries

  • 8
    (24 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      4.9
    • Value

      4.9
    • Would Recommend

      5.0
    • $25,000+
    • 10 - 49 employees
    • Vista, CA

    The Smyth Group is a digital agency founded in San Diego in 2005. Their team of more than 10 specializes in UX/UI design, custom software development, and web development solutions for mid-market and enterprise-level clients.

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    Clients

    • Columbia Sportswear

    Industries

  • 9
    (20 Reviews) 4.9
    • Timeliness

      4.9
    • Service Excellence

      4.9
    • Value

      4.8
    • Would Recommend

      5.0
    • $10,000+
    • 50 - 249 employees
    • San Francisco, CA

    Azumo is a San Francisco based software development services company. They have additional offices in McKinney, Texas and Rosario, Argentina. They were founded in 2016, and specialize in custom software development, mobile app development, and the use of AI.

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    Clients

    • Twitter

    Industries

  • 10
    (74 Reviews) 4.9
    • Timeliness

      4.8
    • Service Excellence

      4.8
    • Value

      4.8
    • Would Recommend

      4.9
    • $10,000+
    • 50 - 249 employees
    • San Francisco, CA

    AirDev is a San Francisco based software development company. They were founded in 2015 and have a team of 11 employees who specialize in the custom software, web, mobile app development. 

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    Clients

    • HP

    Industries

  • 11
    (4 Reviews) 4.8
    • Timeliness

      4.9
    • Service Excellence

      4.8
    • Value

      4.8
    • Would Recommend

      5.0
    • $50,000+
    • 50 - 249 employees
    • San Francisco, CA

    Admios Nearshore Software Development is an IT staff augmentation company. They are based in Panama City, Panama; San Francisco, California and San Luis, Chile and have a midsize team that specializes in IT staff augmentation, custom software development, e-commerce development, and IT managed services. The company was launched in 2005.

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    Industries

  • 12
    (7 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      4.9
    • Value

      4.9
    • Would Recommend

      5.0
    • $50,000+
    • 50 - 249 employees
    • San Diego, CA

    WebcentrIQ is a software development company in San Diego. Founded in 2017, they have about 10 employees that serve mostly midmarket and small-business clients in the healthcare, financial, and IT industries. Services include custom software development, mobile app development, and UI/UX design.

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    Clients

    • Campaign Monitor

    Industries

  • 13
    (1 Reviews) 5.0
    • Timeliness

      4.5
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $100,000+
    • 50 - 249 employees
    • Newark, CA

    Dibutech is a software development firm. The midsize Concord, California-based team provides custom software development and web development. The firm was launched in 2018.

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    Industries

  • 14
    (7 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      4.9
    • Would Recommend

      5.0
    • $25,000+
    • 10 - 49 employees
    • Pasadena, CA

    Custom software development firm Serious Development was founded in 2014. Their small team is based in Pasadena, California and Houston, Texas and focuses on custom software development, mobile app development, web development, web design, and more.

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    Industries

  • 15
    (13 Reviews) 4.9
    • Timeliness

      4.8
    • Service Excellence

      4.8
    • Value

      4.8
    • Would Recommend

      4.8
    • $10,000+
    • 50 - 249 employees
    • San Francisco, CA

    Founded in 2012, SF AppWorks is a digital agency that produces innovative technologies for mainly midmarket companies. Based in San Francisco, their team of 50+ specializes in web development, mobile app development, UX/UI design, and custom software development. 

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    Clients

    • West Elm

    Industries

  • 16
    (11 Reviews) 4.9
    • Timeliness

      4.8
    • Service Excellence

      4.9
    • Value

      4.7
    • Would Recommend

      5.0
    • $50,000+
    • 50 - 249 employees
    • San Francisco, CA

    Mayven is a San Francisco based software design and development company. They were founded in 2015 and have a team of 25 employees. They specialize in web, custom software, and eCommerce development for enterprise and midmarket clients.

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    Clients

    • Andreesen Horowitz

    Industries

  • 17
    (8 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      4.9
    • Would Recommend

      5.0
    • $50,000+
    • 10 - 49 employees
    • Long Beach, CA

    Established in 2001, JLOOP is a mobile application development firm. Their small team is based in Long Beach, California and , . Their team focuses on mobile app development, web development, and video production.

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    Clients

    • IBM

    Industries

  • 18
    (22 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      4.9
    • Would Recommend

      5.0
    • $10,000+
    • 10 - 49 employees
    • Los Angeles, CA
    Materialize, a software development company, was established in 2018. They are in Los Angeles, California and have a small team. Materialize focuses on Custom Software Development, Generative AI, UX/UI Design, Web Development, and more.
    Read More

    Industries

  • 19
    (5 Reviews) 4.9
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      4.8
    • Would Recommend

      5.0
    • $5,000+
    • 2 - 9 employees
    • San Diego, CA

    CodeNoise is a development team based in San Diego. They have a team of around 5 employees and were founded in 2011. They provide custom software, web, and mobile app development services.  

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    Clients

    • TruMed Systems

    Industries

  • 20
    (8 Reviews) 4.9
    • Timeliness

      4.9
    • Service Excellence

      4.9
    • Value

      4.9
    • Would Recommend

      4.9
    • $25,000+
    • 250 - 999 employees
    • Los Angeles, CA
    Nearsure is an IT staff augmentation company. The midsize Los Angeles, California-based team offers IT staff augmentation, IT strategy consulting, IT managed services, Custom Software Development, and more. The firm was founded in 2018.
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    Clients

    • Staywell

    Industries

  • 21
    (5 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      4.8
    • Value

      5.0
    • Would Recommend

      5.0
    • $25,000+
    • 50 - 249 employees
    • San Francisco, CA
    ScaleTech, a mobile application development firm, was established in 2017. Their small team is in Ahmedabad, India; San Francisco, California and Frankfurt am Main, Germany. Their services include mobile app development, enterprise app modernization, e-commerce development, IoT development, and more.
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    Industries

  • 22
    (47 Reviews) 4.9
    • Timeliness

      4.9
    • Service Excellence

      4.9
    • Value

      4.8
    • Would Recommend

      5.0
    • $50,000+
    • 50 - 249 employees
    • Santa Monica, CA

    Sidebench is a strategy, design, and development consultancy with a team of 70+ experts headquartered in Los Angeles. Founded in 2012, Sidebench caters to enterprise companies and new ventures seeking the management consultants & experienced founders, the technical chops of systems architects, and a UX-first approach. Sidebench provides app and web development, UX/UI design, web design, and app testing via a fully integrated product delivery team.

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    Clients

    • Microsoft Corporation

    Industries

  • 23
    (9 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      4.8
    • Would Recommend

      5.0
    • $25,000+
    • 10 - 49 employees
    • Irvine, CA
    Baytech Consulting is a custom software development firm founded in 2007. Their small team is headquartered in Irvine, California. Their services include Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more.
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    Clients

    • Petra Medical College

    Industries

  • 24
    (22 Reviews) 4.9
    • Timeliness

      4.8
    • Service Excellence

      4.9
    • Value

      4.8
    • Would Recommend

      4.9
    • $50,000+
    • 2 - 9 employees
    • El Segundo, CA

    Expedition Co, is a software development company that was founded in 2017. The company is headquartered in Palos Verdes Estates, Calif. and is currently made up of 8 employees. They specialize in mobile app development, UX/UI design, and custom software development. 
     

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    Clients

    • Hewlett-Packard
  • 25
    (19 Reviews) 4.9
    • Timeliness

      4.8
    • Service Excellence

      4.9
    • Value

      4.9
    • Would Recommend

      4.9
    • $5,000+
    • 10 - 49 employees
    • San Francisco, CA

    Launched in 2020, Apex Lab is a software development company. Their small team is based in Tallinn, Estonia and San Francisco, California. Their team offers custom software development, mobile app development, web development, and enterprise app modernization.

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  • 26
    (8 Reviews) 4.8
    • Timeliness

      4.8
    • Service Excellence

      4.8
    • Value

      4.3
    • Would Recommend

      4.9
    • $25,000+
    • 50 - 249 employees
    • San Francisco, CA

    Grio is a software consulting firm based in San Francisco, Calif, that was established in 2008. Their team of 50 employees offers web development, mobile app development, and UX/UI design services.

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    Industries

  • 27
    (40 Reviews) 4.4
    • Timeliness

      4.2
    • Service Excellence

      4.5
    • Value

      4.4
    • Would Recommend

      4.4
    • $10,000+
    • 50 - 249 employees
    • Berkeley, CA

    Founded in 2016, Crowdbotics is a development company based in Berkeley, Calif. They work with businesses of all sizes in the business services, consumer products, and healthcare fields. 

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    Clients

    • Stripe

    Industries

  • 28
    (34 Reviews) 4.9
    • Timeliness

      4.8
    • Service Excellence

      4.9
    • Value

      4.8
    • Would Recommend

      5.0
    • $10,000+
    • 10 - 49 employees
    • Los Angeles, CA

    Endertech is a California-based design agency was founded in 2000. Its team of 20+ has experience in digital marketing, web design, software development, and UX/UI design.

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    Clients

    • Doyle

    Industries

  • 29
    (4 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $25,000+
    • 10 - 49 employees
    • Chula Vista, CA

    Rivka is a small IT staff augmentation company. They provide IT staff augmentation, custom software development, and mobile app development and were launched in 2011.

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    Industries

  • 30
    (11 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      4.9
    • Would Recommend

      5.0
    • $100,000+
    • 10 - 49 employees
    • San Francisco, CA

    WLCM App Studio is a software development firm launched in 2011. The small San Francisco, California-based team specializes in custom software development, mobile app development, ux/ui design, application testing, and more.

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    Industries