Top 100 IT Services Companies in California
The Best of December 2025Looking for a top IT services company in California?
For your company to grow, it is essential to choose the best technology. Hiring an innovative IT services provider is the easiest way to ensure that you are making the best use of technology, increasing sales, and staying one step ahead of the competition.
To assist you in your search for a partner, we’ve compiled this list of the top IT consultants in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best California IT Companies
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$10,000+50 - 249 employeesL'viv, UkraineRead More
Founded in 2019, Uinno is an artificial intelligence firm. The midsize team specializes in Artificial Intelligence, Custom Software Development, Low/No Code Development, UX/UI Design, and more. The company is based in L'viv, Ukraine; Tallinn, Estonia; Kingston upon Thames, England and Zaporizhzhia, Ukraine.
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$1,000+50 - 249 employeesNaperville, ILBetterWorld Technology is a midsize IT managed services company launched in 2003. Their services include IT managed services, Cybersecurity, IT strategy consulting, and Compliance Consulting. The company is headquartered in Naperville, Illinois; Naperville, Illinois; Winter Park, Florida and Denver, Colorado.Read More
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631$100,000+250 - 999 employeesIrvine, CAIT strategy consulting company Prophecy Technologies focuses on IT strategy consulting and Cybersecurity. They are located in Irvine, California.Read More
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632Undisclosed10 - 49 employeesLos Angeles, CAYavda Analytics Private Limited is a business intelligence company. Founded in 2018, the team offers BI & big data consulting & SI.Read More
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633$10,000+10 - 49 employeesCulver City, CAIT managed services company IT Training & Consulting, Inc (ITTC) was established in 1997. The company specializes in IT managed services and Cybersecurity.Read More
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634$1,000+10 - 49 employeesLos Angeles, CAPurple Shield Security is a Cybersecurity company. They are located in Los Angeles, California and have small team. They offer Cybersecurity and Compliance Consulting.Read More
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635Undisclosed10 - 49 employeesCarlsbad, CACybersecurity company Intersectis is based in Carlsbad, California. Their services include Cybersecurity and Digital Strategy.Read More
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636$5,000+10 - 49 employeesFremont, CAProkopto is a small IT strategy consulting company headquartered in Fremont, California. The team offers IT strategy consulting and cloud consulting & SI.Read More
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637$1,000+10 - 49 employeesWalnut Creek, CARooted Software, an IT managed services company, was launched in 2021. The team provides IT managed services and Custom Software Development and is based in Walnut Creek, California.Read More
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638$10,000+10 - 49 employeesSan Jose, CAWhite Box Data is a big data company. Launched in 2023, the team provides BI & big data consulting & SI and AI Consulting. The firm is based in San Jose, California and Charlotte, North Carolina.Read More
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639Undisclosed10 - 49 employeesIrvine, CABB2 Technology Group is a small Irvine, California-based UX design company. The team focuses on UX/UI Design and BI & big data consulting & SI.Read More
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640Undisclosed10 - 49 employeesSan Diego, CASimpletech IT Solutions Inc. Is an IT strategy consulting company established in 2012. Their team provides IT strategy consulting and cloud consulting & SI.Read More
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641$1,000+2 - 9 employeesSan Francisco, CACarezian, Inc. Is a Cybersecurity company founded in 2021. The small team focuses on Cybersecurity and IT managed services.Read More
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642$25,000+10 - 49 employeesNewport Beach, CALYSI is a small IT strategy consulting company. They offer IT strategy consulting and IT managed services and were established in 2018.Read More
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643Undisclosed50 - 249 employeesSan Francisco, CAVector Health Compliance is a Compliance Consulting company. The San Francisco, California-based company specializes in Compliance Consulting and BI & big data consulting & SI.Read More
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644$1,000+10 - 49 employeesFresno, CAKapoor IT Solutions is an IT strategy consulting company. The firm is located in Fresno, California. Their services include IT strategy consulting and IT managed services.Read More
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645$10,000+10 - 49 employeesIrvine, CAEstablished in 2018, Conveyance Solutions is a small Irvine, California-based ERP consulting and SI company. Their team offers ERP consulting and SI and API Development.Read More
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646$10,000+10 - 49 employeesIrvine, CASignalAge is an IT strategy consulting company. The Irvine, California-based team provides IT strategy consulting and cloud consulting & SI.Read More
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647$5,000+2 - 9 employeesLong Beach, CARead More
Radcrafters is a marketing and advertising agency that has been offering marketing strategy, SEO, and web design services to their small business and mid-market clients in the telecommunications, automotive, and real estate industries since 2017. Their 10 employees are based in their Long Beach, Calif. office.
Clients
Safeword CreativeIndustries
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648$1,000+2 - 9 employeesSan Clemente, CARead More
Convuent is a digital marketing company from San Clemente, California. With one employee, their services include SEO, marketing strategy, and social media marketing. Founded in 2018, their clients are often small businesses in the dental, business, and financial services industries.
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649$50,000+50 - 249 employeesSan Jose, CASuccessLink Outsourcing, an answering service company, is based in San Jose, California. The company specializes in call center services, back office outsourcing, customer service outsourcing, finance & accounting outsourcing (FAO), and more and has a midsize team.The company was launched in 2024.Read More
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650$5,000+50 - 249 employeesSanta Clara, CALocated in Santa Clara, California, Opallios, Inc. Is a software development firm. They focus on Custom Software Development and BI & big data consulting & SI and were established in 2010.Read More
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651Undisclosed50 - 249 employeesSan Francisco, CARead More
ClearScale is a cloud-native systems integration, strategic consulting, and application development company founded in San Francisco with over 50 employees. They provide custom software development, mobile app development, and big data consulting services.
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652$1,000+2 - 9 employeesWalnut Creek, CANerd Crossing, an IT managed services company, provide IT managed services and Cybersecurity. They were established in 2010.Read More
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653Undisclosed10 - 49 employeesCampbell, CAINFINIT Consulting is an IT managed services company. They focus on IT managed services and cloud consulting & SI and are based in Campbell, California and American Fork, Utah.Read More
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654$1,000+2 - 9 employeesHuntington Beach, CAMyITAdmin.services is a Huntington Beach, California-based IT managed services company. Established in 2019, the team offers IT managed services and Cybersecurity.Read More
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655$1,000+2 - 9 employeesGarden Grove, CABassett IT, an IT managed services company, specializes in IT managed services and Cybersecurity. The agency is in Garden Grove, California.Read More
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656$10,000+2 - 9 employeesSan Jose, CABay Area Technologies, LLC is an IT managed services company established in 2017. Their team offers IT managed services and other IT consulting and SI.Read More
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657$10,000+10 - 49 employeesSan Francisco, CAInteliPlus Data is a small Toronto, Canada-based big data analytics company. Their services include BI & big data consulting & SI.Read More
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658$1,000+250 - 999 employeesSan Diego, CALaunched in 2016, ATBOD is a midsize San Diego, California-based cloud consulting & SI company. Their team offers cloud consulting & SI and CRM consulting and SI.Read More
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659$25,000+50 - 249 employeesArcadia, CAGAIA TECH is a big data company founded in 2013. Located in Arcadia, California, the team focuses on BI & big data consulting & SI and Custom Software Development.Read More
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660Undisclosed50 - 249 employeesFresno, CAHajana Technologies, an IT strategy consulting company, specialize in IT strategy consulting and IT managed services. They were founded in 2014.Read More
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Schedule ConsultationMost Reviewed IT Services Company in California
Check out an IT Services Company in California with the most new reviews in the past 12 months.
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