Some interesting stuff
Some good tools I am using. Perhaps you kown them all, but I like to share good things and tips ;-)
A complete reverse proxy solution with SSO capabilities (forward, auto post, auto htaccess…), web configurator and easy use of mod_security !!
An awsome solution for monitoring, not full open source but pretty good in an overall view:
A really nice and simple webmail (beta but stable):
An article about Cisco vs OpenBSD vs Linux Based firewalls
Take a minute to read it, especially the conlusion ;-)