I thought I'd put up a list of software that I've been fooling around with lately. I've seen EAC, Foobar, & Flac mentioned before in passing but I haven't seen any threads for people to contribute useful free applications that they have found. With any luck we'll end up with a fairly comprehensive list.

F.L.A.C.
Free Lossless audio codec
Make sure to check out the extras, lots of great tools there