HTTP proxy to block ads and customize webpages
Privoxy is a non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk. Privoxy has a flexible configuration and can be customized to suit individual needs and tastes. It has application for both stand-alone systems and multi-user networks.
Scripts and tools to manage your Server.
The Postfix Extensible Policy Daemon aims to provide a flexible framework for policy delegation in the context of the Postfix MTA. It is written in Perl and accepts policy check routines in the form of Perl modules.