Log management solution that improves the performance of SIEM
A dead simple VPN
Bug-fix-only libev port of shadowsocks
Free UTM appliance: firewall, VPN, WAF and antivirus in one ISO.
a getty/login/xinit combination
SIA receiver for Galaxy security control panels.
Open Source PKI solutions
A Linux Kernel Module that implements Trusted Path Execution
Free-SA is report generating tool for web, proxy and mail log files
Whitelist manager
Passive Proxy Daemon sniffs packets and creates squid proxy logs