Qualys, Inc. is a U.S.-based web security firm founded in 1999, specializing in IT security risk and compliance management solutions. The company offers a comprehensive suite of products including vulnerability management, policy compliance, web application scanning, malware detection, and cloud security. Qualys serves a diverse range of customers primarily in the United States, providing them with tools to measure, manage, and reduce cyber risk through its Enterprise TruRisk Platform.

Qualys has made significant strides in the cybersecurity industry, becoming a publicly traded company on Nasdaq under the ticker QLYS and a component of the S&P 400. Its platform capabilities encompass asset management, risk remediation, threat detection and response, and compliance, among others. The company's impact is underscored by its extensive customer base and its continuous innovation in cybersecurity solutions.