The PPPOE with Bandwidth Management for OpenBSD Howto is a document which explains how to build an OpenBSD based router for a small flat-sharing community with four residents. The router should manage the available bandwidth fairly between the paying users and their guests. For the residents, it should be possible to use incoming ports for services like Skype or Emule. The howto basically addresses IT professionals with a rough idea of what OpenBSD is about.
Sorcerynet IRC Services is a program that provides an IRC network with nickname and channel registration and protection. The services supplied are NickServ, ChanServ, MemoServ (for short text messages), GameServ (a dice-rolling service), InfoServ (broadcast messages) and OperServ, which has clone detection, global autokill, and many other features.
arch is a modern replacement for CVS, specifically designed for the distributed development needs of open source projects. It has uniquely good support for development on branches (especially good merging tools), distributed repositories (every developer can have branches in their own repository), changeset-oriented project management (arch commits changes to multiple files at once), and, of course, file and directory renaming.