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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$5,000+50 - 249 employeesGaithersburg, MDRead More
DesignDATA is an IT managed services company. Established in 1979, the midsize agency is headquartered in Gaithersburg, Maryland and Washington, District of Columbia. Their services include IT managed services, IT strategy consulting, cloud consulting & SI, and Cybersecurity.
Industries
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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
Industries
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2371$25,000+250 - 999 employeesKyiv, UkraineInnovecs, a software development firm, is based in New York, New York; Kyiv, Ukraine; San Francisco, California and Tel Aviv-Jaffa, Israel. Launched in 2011, the midsize team offers Custom Software Development, DevOps Managed Services, BI & big data consulting & SI, cloud consulting & SI, and more.Read More
Clients
SGNIndustries
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2372Undisclosed50 - 249 employeesSan Jose, CAXebrium Inc, a midsize custom software development firm, is located in San Jose, California and Pune, India. Their services include Custom Software Development and Enterprise App Modernization.Read More
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2373Undisclosed250 - 999 employeesCupertino, CAWolken Software is an IT strategy consulting company. They are based in Cupertino, California and Bengaluru, India, and their services include IT strategy consulting and IT managed services.Read More
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2374Undisclosed250 - 999 employeesRedlands, CACyberTech Systems and Software, Inc is a Cybersecurity company. They offer Cybersecurity and ERP consulting and SI and are located in Oak Brook, Illinois and Redlands, California.Read More
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2375Undisclosed250 - 999 employeesSanta Clara, CATatvic is a business intelligence company. The midsize Ahmedabad, India-based team specializes in BI & big data consulting & SI and Conversion Optimization. The firm was founded in 2009.Read More
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2376Undisclosed50 - 249 employeesRedwood City, CAFounded in 2001, VIT Infotech is a Robotics Process Automation company. Their services include Robotics Process Automation and IT strategy consulting.Read More
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2377Undisclosed250 - 999 employeesBengaluru, IndiaFounded in 2000, MicroGenesis Techsoft Pvt. Ltd. Is an IT managed services company. The team provides IT managed services and Robotics Process Automation.Read More
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2378$100,000+10 - 49 employeesRedwood City, CARead More
Accelerance is a software development firm. Founded in 2001, the small agency is located in Redwood City, California; Charlotte, North Carolina; Buenos Aires, Argentina and Monterrey, Mexico. Their team specializes in Custom Software Development, Mobile App Development, Artificial Intelligence, Generative AI, and more.
Clients
AcrowireIndustries
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2379$5,000+50 - 249 employeesBerlin, GermanyRead More
Founded in 2017, MeGaDev is a custom software development firm. Their midsize team is in Alicante (Alacant), Spain; Kharkiv, Ukraine; Rīga, Latvia and Zug, Switzerland. Their services include Custom Software Development, Artificial Intelligence, ERP consulting and SI, Web Development, and more.
Clients
TalentumIndustries
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2380$25,000+1,000 - 9,999 employeesCalabasas, CAProlifics is an ECM consulting and SI company. Launched in 1978, the team focuses on ECM consulting and SI and unified communications consulting & SI.Read More
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2381Undisclosed250 - 999 employeesPalo Alto, CADialog Information Technology is a CRM consulting and SI company. Founded in 1979, the agency provides CRM consulting and SI and ECM consulting and SI.Read More
Clients
National Australia BankIndustries
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2382$5,000+1,000 - 9,999 employeesEmeryville, CASeasia Infotech is a custom software development firm in Emeryville, California; Gordon, Australia; Sahibzada Ajit Singh Nagar, India and Edmonton, Canada. Established in 2000, the large team specializes in Custom Software Development, Web Development, Mobile App Development, UX/UI Design, and more.Read More
Clients
HDFC Bank Flipkart CDAC HouseJoyIndustries
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2383Undisclosed1,000 - 9,999 employeesSan Ramon, CANous Infosystems, an Application Testing company, was founded in 1996. The large team focuses on Application Testing and Custom Software Development.Read More
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2384$1,000+10,000+ employeesEl Segundo, CAFounded in 1999, FPT Software, a large Digital Strategy company, is in El Segundo, California and Hanoi, Vietnam. Their team focuses on Digital Strategy and cloud consulting & SI.Read More
Industries
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2385Undisclosed250 - 999 employeesDublin, CABhavna Corp. Is a Noida, India-based application development firm. Their services include Mobile App Development and DevOps Managed Services.Read More
Industries
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2386Undisclosed1,000 - 9,999 employeesRedwood City, CAInformatica is a CRM consulting and SI company based in Redwood City, California and Austin, Texas. They focus on CRM consulting and SI and ERP consulting and SI.Read More
Industries
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2387Undisclosed1,000 - 9,999 employeesSan Francisco, CATeneo is a Business Consulting company. They are located in New York, New York and San Francisco, California and have large team. Their services include Business Consulting and Cybersecurity.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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