Freshmeat page: http://freshmeat.net/projects/nall/
Nall is a small gtk+ status icon application that discreetly fits into your system tray (such as trayer, or gnome/kde panels). Its purpose is to spawn periodically every kind of script and display a one-line output in the tooltip window. The main usage of nall is monitoring or just notifying of almost everything (using acpi, telnet, ssh, or nagios plugins). It just depends upon your imagination and ability to script a probe.
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!