Sitala is a free drum plugin and standalone app.
Non opensource
Loop & co
http://overdrive.music.free.fr/01Drum_Loops.php
Drum kits Hydrogen
http://www.hydrogen-music.org/hcms/forum/19
plein de samples :
http://www.originalsamplesloops-and-music-online.com/musique.informatique/samples-de-batterie-acoustique.html
loops diverses :
https://jimdooley.net/Drum-Loops-and-Beats
Kit batterie :
http://www.bandshed.net/sounds/sfz/SalamanderDrumkit.zip
Samples : Drum, bruits, sons
http://www.musicradar.com/news/tech/free-music-samples-download-loops-hits-and-multis-627820
http://sampleswap.org/filebrowser-new.php
Samples instruments SoundFont entre autres:
http://fruityclub.net/ressources-samples-soundfonts/banques-sonores-le-meilleur-du-net/
Drum pour Ardour :
http://openavproductions.com/fabla2/
DrMr : This one loads Hydrogen drumkits, wich can be very handy. https://github.com/nicklan/drmr/wiki
drumkv1: http://drumkv1.sourceforge.net/drumkv1-index.html
http://hitmuri.net/index.php/Software/Tapeutape