This is really, really cool. I probably have a ton of stuff to contribute, I'll go through my own collection later on. One thing I noticed: [Devkits]/Nintendo DS/NITRO-System Library 3.0 Plus2.7z is a duplicate of the files in [Devkits]/Nintendo DS/NITRO-System Library (9-1-05).7z. One more: [Devkits]/Nintendo Game Boy Advance/IS-AGB-CAD.7z extracts to 5 empty files. All GameCube SDKs were labeled 1.0, but to my knowledge there's at least 4 different timestamps with known releases: 22/05/2001 12/12/2001 08/05/2003 20/04/2004 AFAIK 1.0, 2.0rc3 and 3.0 got leaked. Some might be incomplete though.