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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61Undisclosed10 - 49 employeesLos Angeles, CAFounded in 1991, Sysnet Solutions is a small Los Angeles, California-based cloud consulting & SI company. Their services include cloud consulting & SI and Cybersecurity.Read More
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62Undisclosed2 - 9 employeesPetaluma, CADeura Information Security Consulting LLC , a Compliance Consulting company, was launched in 2002. Based in Petaluma, California, the team specializes in Compliance Consulting and Cybersecurity.Read More
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63Undisclosed10 - 49 employeesSanta Clarita, CADIGITAL TELECOMMUNICATION CORP (DTC) is a small Cybersecurity company. They specialize in Cybersecurity and IT managed services and were founded in 1982.Read More
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64UndisclosedFreelancer employeesBurbank, CAApplication Testing company CyberTest is located in Burbank, California. They provide Application Testing and Cybersecurity.Read More
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65$10,000+10 - 49 employeesSan Jose, CALocated in San Jose, California and Vancouver, Canada, A-CX is a Cybersecurity company. They focus on Cybersecurity and Custom Software Development and were launched in 2020.Read More
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66Undisclosed50 - 249 employeesSan Francisco, CAIn San Francisco, California and Paris, France, TrustInSoft is a midsize data analytics company. Their services include BI & big data consulting & SI and Cybersecurity.Read More
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67UndisclosedFreelancer employeesSan Diego, CAVulnalysis LLC is a Cybersecurity company based in San Diego, California. They specialize in Cybersecurity and IT strategy consulting and were launched in 2023.Read More
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68Undisclosed250 - 999 employeesSan Mateo, CAMidsize Cybersecurity company Keyfactor , is headquartered in Independence, Ohio and Solna, Sweden. The team offers Cybersecurity and IoT development.Read More
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69$10,000+1,000 - 9,999 employeesSan Ramon, CARead More
Neurealm is a Cybersecurity company. They specialize in Cybersecurity, Custom Software Development, Artificial Intelligence, Generative AI, and more and were founded in 1998. Their large team is headquartered in Princeton, New Jersey; San Ramon, California; Santa Clara, California and Chennai, India.
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