Freshmeat page: http://freshmeat.net/projects/rosegarden/
MIDI sequencer and musical notation editor.
"Current" (actually 4 years old now) version is 2.1 (unless you count the patch levels). "New" version has had several incarnations, which involved Gnome, CORBA, and now KDE. They are briefly described here. So Rosegarden is probably among the top 5 projects to have stayed in limbo for the longest time.
The last incarnation (KDE-based) is moving forward at a decent pace -- see the homepage.
This project has the following developers:
New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.
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If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!