Anti-Spam SMTP Proxy Server implements multiple spam filters
A universal instant messaging (IM) program
Linux for older and average computers
Koha on Oracle Virtual Box
Open Source PKI solutions
Lightweight Event Management System (for Monitoring-Events and more)
Handy tools to process/analyze next generation sequencing (NGS) data
Adobe Flash Socket Policy File Server (cross-domain-policy)
OpenSource Call Center and Dialer System
This tool locks down Linux and UNIX systems.
Learn Linux sysadmin from Windows PC using this Debian Virtual Box