Techbot is a small, modular IRC bot written in C. It uses glib, gnet, and libxml. On startup it reads an XML configuration file, and uses dynamically (un)loadable modules to implement functionality (friends lists, auto-opping, etc.).
A common piece of information distributed with announcement (e.g. on the GNOME announcements mailling list), is a list of changes in 'bullet-point' fashion.
How about a 'changelog' element, with 'change' element children?
A tool for securing DNS communications between a client and a DNS resolver.
A polyhedral extraction tool (PET).