system environment/daemons
- dovecot - Secure imap and pop3 server
- ekeyd - Simtec Electronics UDEKEY01 Entropy Key Daemon
- mod_fcgid - FastCGI interface module for Apache 2
- mod_removeip - Module to remove IP from apache2's logs
- nginx - Robust, small and high performance http and reverse proxy server
- squid - The Squid proxy caching server
- varnish - High-performance HTTP accelerator