Quote:LCDproc controls various LCD and VFD devices in a standardized way, and ships with a client to display various system statistics. Supports multiple platforms (Linux, *BSD, Solaris). Client/server model allows multiple systems/clients to use one display.Many (if not most) HTPC chassi comes with a LCD or VFD display today, and for those chassi that do not come with one you can buy a drop-in display for 5,25" slots, (for example iMON which may be one of the most sold solutions, it like most other 5,25" slot LCD you can buy comes with a LIRC compatible InfraRed-reciever built-in). Some newer are USB connected, however mopst older are connected via the serial or paralell port.
EDIT: There are of course other open source LCD/VFD libraries for Linux out there, LCDproc was only the first one I found when searching