Cross-platform multi-protocol VPN software
Agentless vulnerability scanner for Linux/FreeBSD
Anti-Spam SMTP Proxy Server implements multiple spam filters
PHP strong authentication library, web interface & CLI, OATH certified
Strong Email & Apache Log Analysis with Active Security Features
OpenID relying party for Apache httpd
Automatically updates and applies certificate revocation lists
Multiple server/webapp vulnerability scanner
Whonix is an Anonymous Operating System.
TACACS+ server for network devices
Open Source PKI solutions
An easy-to-use anti-spam email gateway
The free cross-platform antivirus software tool-kit
ICAP Daemon that implements content scanning