Top 70 Application Security Companies in California
The Best of December 2025Looking for a top application security company in California?
With their in-depth knowledge of application security principles, penetration testing techniques, and security compliance standards, application security services help businesses identify and address security vulnerabilities before malicious actors exploit them. By collaborating with application security professionals, companies can enhance the resilience of their software infrastructure, build trust with their customers, and maintain a strong security posture in today's digital age.
To assist you in your search for a partner, we’ve compiled this list of the top application security vendors in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best California Application Security Services
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1$25,000+50 - 249 employeesLos Angeles, CADreamers Inc. Is an artificial intelligence development company in Los Angeles, California. Launched in 2013, the midsize team focuses on Artificial Intelligence, Mobile App Development, Blockchain, Cybersecurity, and more.Read More
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NASA Johns Hopkins Applied Physics Lab US Air Force US Department of EducationIndustries
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2$5,000+10 - 49 employeesHuntington Beach, CACAL IT Group is a small IT managed services company. Launched in 2016, the company is in Huntington Beach, California. Their team focuses on IT managed services and Cybersecurity.Read More
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3$10,000+10 - 49 employeesSan Diego, CARead More
BD Emerson is a cybersecurity company in Richmond, Virginia. The company offers cybersecurity, business consulting, corporate law, and compliance consulting and has a small team.The company was established in 2020.
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4$5,000+10 - 49 employeesWest Hollywood, CAInsightful Networks is a business intelligence company. The midsize West Hollywood, California-based agency was founded in 1998. Their team provides BI & big data consulting & SI, IT staff augmentation, IT managed services, other IT consulting and SI, and more.Read More
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5$1,000+10 - 49 employeesPasadena, CABased in Pasadena, California; Grapevine, Texas and Denver, Colorado, Techmedics is an IT managed services company. The company specializes in IT managed services, IT strategy consulting, Cybersecurity, and cloud consulting & SI and is small.The company was launched in 1999.Read More
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6$5,000+50 - 249 employeesSacramento, CARead More
West Advanced Technologies Inc is a midsize Sacramento, California-based cybersecurity company. The team specializes in cybersecurity, IT staff augmentation, cloud consulting & SI, and IT managed services.
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7$5,000+2 - 9 employeesWest Hollywood, CACybersecurity company HECVAT Pro is located in West Hollywood, California. They provide cybersecurity and were established in 2021.Read More
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8Undisclosed10 - 49 employeesLos Angeles, CAInfonetworks is an IT strategy consulting company established in 2018. Their small team is located in Los Angeles, California and offers IT strategy consulting, unified communications consulting & SI, Cybersecurity, and IT managed services.Read More
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9$1,000+10 - 49 employeesPasadena, CAIT managed services company AdviseTech is based in Pasadena, California. The small team focuses on IT managed services, cloud consulting & SI, and Cybersecurity. The company was founded in 1998.Read More
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10$1,000+10 - 49 employeesSan Francisco, CABay Computing Group is a San Francisco, California-based IT strategy consulting company. The small team provides IT strategy consulting, cloud consulting & SI, Cybersecurity, and IT managed services and was founded in 1999.Read More
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11$10,000+250 - 999 employeesSan Diego, CAVerimatrix is a Cybersecurity company. Located in San Diego, California and Meyreuil, France, the agency focuses on Cybersecurity.Read More
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12$1,000+10 - 49 employeesSan Francisco, CAKindrix Group is a small cloud consulting & SI company. The San Francisco, California-based agency was launched in 2025. Their services include cloud consulting & SI, Cybersecurity, Artificial Intelligence, Digital Engineering, and more.Read More
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13$5,000+250 - 999 employeesSan Francisco, CACobalt is a San Francisco, California-based Cybersecurity and Application Testing company. Launched in 2013, the team offers Cybersecurity and Application Testing.Read More
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14$25,000+1,000 - 9,999 employeesLos Angeles, CANetsol Technologies Inc. Is a Cybersecurity company. Based in Los Angeles, California and London, England, the team specializes in Cybersecurity and cloud consulting & SI.Read More
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15$5,000+10 - 49 employeesSan Diego, CARead More
Pact-One Solutions, LLC, a IT managed services company, is headquartered in Las Vegas, Nevada; San Diego, California; Pasadena, California and Lake Oswego, Oregon. The small team focuses on IT managed services, cybersecurity, IT strategy consulting, other IT consulting and SI, and more and was founded in 2003.
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16$5,000+10 - 49 employeesLos Angeles, CAThe Tech Consultants, LLC is an IT managed services company. Located in Los Angeles, California, their small team offers IT managed services and Cybersecurity. The firm was launched in 2006.Read More
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17Undisclosed10 - 49 employeesCypress, CAL3 Networks Inc. Is an IT strategy consulting company. The small Cypress, California-based team provides IT strategy consulting and cloud consulting & SI. The company was established in 2000.Read More
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18$1,000+10 - 49 employeesSunnyvale, CALocated in Sunnyvale, California, Belkasoft is a Cybersecurity company. The team offers Cybersecurity and Artificial Intelligence.Read More
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19Undisclosed10 - 49 employeesSunnyvale, CAGRSee Consulting is a Cybersecurity and Compliance Consulting company. Based in Sunnyvale, California and Rehovot, Israel, the team provides Cybersecurity and Compliance Consulting.Read More
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20$1,000+50 - 249 employeesSanta Clara, CAGoognu data service pvt. Ltd is a business intelligence company. The Santa Clara, California-based firm focuses on BI & big data consulting & SI and cloud consulting & SI.Read More
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21$5,000+10 - 49 employeesSan Carlos, CAEmagined Security is a Cybersecurity company. Launched in 2003, the team offers Cybersecurity.Read More
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22$1,000+2 - 9 employeesOakland, CAStateWP is a Cybersecurity company. Their small team is headquartered in Oakland, California. Their services include Cybersecurity and IT managed services.Read More
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23Undisclosed2 - 9 employeesConcord, CAALFATEK is a Concord, California-based branding agency. They offer Branding and Social Media Marketing.Read More
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24Undisclosed10 - 49 employeesPlacentia, CAZSB TECH – Solution is a web design agency. The team offers Web Design and UX/UI Design and is located in Placentia, California and Placentia, California.Read More
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25Undisclosed10 - 49 employeesPalo Alto, CAAnjuna Security, Inc. Is a Palo Alto, California-based IT strategy consulting company. They provide IT strategy consulting and cloud consulting & SI.Read More
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26$1,000+10 - 49 employeesFairfield, CAEstablished in 2008, nDataStor Inc, a small Cybersecurity company, is headquartered in Fairfield, California and Sacramento, California. Their team offers Cybersecurity and IT managed services.Read More
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27$5,000+10 - 49 employeesHealdsburg, CAFusion Technology Solutions LLC is an IT strategy consulting company. Headquartered in Healdsburg, California, their team specializes in IT strategy consulting and cloud consulting & SI.Read More
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28$1,000+2 - 9 employeesLos Angeles, CAXentric Solutions is a small Los Angeles, California-based Cybersecurity company. Their services include Cybersecurity and IT managed services.Read More
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29$1,000+2 - 9 employeesNewport Beach, CAOCMSP is an IT managed services company. They are based in Newport Beach, California. Their team offers IT managed services and Cybersecurity.Read More
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30Undisclosed2 - 9 employeesConcord, CAPacific Computer Consultants is an IT managed services company founded in 2003. The agency focuses on IT managed services and Cybersecurity, and is small.Read More
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