Sorry , but because all that software has been compiled with MS SDK we can not link to the software due possible legal issues.
The best way to get the files is irc & newsgroups.
If you are a programmer , please support the OpenXDK project (http://openxdk.sourceforge.net/). This will make it possible to distribute xbox homebrew software legally.
If you are looking for win32 tools used for xbox stuff , check our tools section : http://www.xbox-scene.com/tools.php