“Information Technology Security Assessment (IT Security Assessment) is an explicit study to locate IT security vulnerabilities and risks.” (Wikipedia)
- Nmap
- Nessus
- Rapid7 Nexpose
- OpenVAS
- Rkhunter [rootkit checker]
- Tiger
- GFI LANguard Network Security Scanner
- Acunetix Web Vulnerability Scanner
- Nikto
- W3af
- AppScan Enterprise
- Trustwave
- NTO Spider
- WebInspect
- Netsparker