Complete , simple and powerfull , all option for band control included ! But free for only 3 user . I have not found better 20' min for reading instruction, installing and setup for non expert , (3' min for expert ) !
BlockParty - Real-time voice chat rooms from the creators of turntable.fm
Squid Proxy - Website Content Acceleration and Distribution. Thousands of web-sites around the Internet use Squid to drastically increase their content delivery. Squid can reduce your server load and improve delivery speeds to clients.
Block Together - A useful tool which helps you block trolls on Twitter.
3proxy - 3proxy freeware proxy server for Windows and Unix. HTTP, SOCKS, FTP, POP3
CleanSpeak - Keep inappropriate content and trolls out of your community
Apache Traffic Server - Fast, scalable and extensible HTTP/S 2 and 1.1 compliant caching proxy server.