Bourriquet is not yet usable, this page exists only to show it is being developped, that's all. You will only be able to connect to a server and search for files, but you will not be able to download since it is not yet implemented. I don't undestand why this news is on nearly every Amiga site, it's far too early.
Anyway, Rusback is doing a nice job doing his own client (helped with SixK an others) only using edonkey protocol documentations)
