ASIO-Alternative-4-All

[gutturalpiss]

That's right, JACK does its job in Windows too, for the first time ever

http://www.grame.fr/~letz/jackdmp.html

More about JACK: JACK Audio Connection Kit - Wikipedia, the free encyclopedia

Current limitations (or features):

1) Only audio routing
2) Only ASIO software supported

A discussion can be found here: KVR: Jack For Windows