Qualys

Qualys was founded in 1999 and was among the first security companies to deliver its product entirely as a cloud service rather than as software to install — an unusual choice at the time and the basis of its business since. It is headquartered in Foster City, California, and listed on Nasdaq. Its core business is knowing what an organisation has and what is wrong with it: vulnerability management, detection and response across servers, endpoints, cloud workloads and containers, with compliance and asset inventory built on the same platform and the same lightweight agent. Qualys Endpoint Protection, the product listed here, extends that agent into anti-malware and endpoint detection. It is bought by organisations that already run Qualys for vulnerability management and want one agent rather than two, which is the more useful way to read it than as a standalone competitor to the dedicated endpoint vendors here.

Country

🇺🇸United States

Headquarters

🇺🇸Foster City, United States

Year Established

1999

Employees

2,625

Customers

10K organisations (2025)Source: Qualys 10-K (FY2025)

Users

110M devices protected (2024)Source: How Qualys is using AI to advance cybersecurity

Revenue

$669.1M (2025)Vendor states: Web search — Qualys

Website

https://www.qualys.com/

Status

Active