phpBB team for its very nice GPL'ed forum toolkit.
Julian Seward for his memory debugger tool, Valgrind.
Without it, Torch3 wouldn't have been developped so fast!
Special
Léon Bottou and Yann Le Cun
for some ideas in gradient machines which are coming from their SN library (now available as the Lush library) and from Léon's Phd thesis.
