Qualys

Qualys’ Vulnerability Management platform is a Software-as-a-Service solution. Investing in hardware is not necessary. They have one of the most extensive Vulnerability Knowledge Bases in the world, giving the platform continuous insights into the most current threats and risks in your infrastructure.
They provide a range of tools, for example, a tool for establishing Policy Compliance in a structured and automated way demonstrating that the policies have been implemented and are compliant. Another useful tool scans web applications for vulnerabilities, as is the Web Application Firewall and their tool for mapping your complete IT infrastructure. Essentially, they link security, compliance and IT management.