pLauncher is a front-end that allows you to access all of your emulators and roms. I created pLauncher because I was tired of typing cryptic commands every time I wanted to play a game, and I hated having to use a different front-end for each different emulator.
The original version was actually called eLauncher, and was written in Eiffel. It has since been rewritten in PERL, making it much faster. The rewrite in PERL also makes it easier for others to contribute to the project.
The toolkit used is GTK+ made possible by the GTK/Perl module.