"D-Bus is a message bus system, a simple way for applications to talk to one another." It's particularly popular on free software desktops (Gnome, KDE). For example, on my recent Ubuntu system, these bindings are sufficient to pop up balloon-tip-style notifications via a daemon I wasn't previously aware of.
Read the documentation online.
This code is still very preliminary, so don't expect the API to be stable yet.
Alternatively, the latest release is 0.1, released 18 July 2006. Get it from the download directory.Evan Martin, email@example.com