ZS6TW has done the OSX amateur radio community a big favor and come up with a pre-compiled copy of WSJT. Check out his blog and download your copy today!
Xastir for Macintosh OS X
Tired of fighting dependencies? Don’t know a ./ from a . or /? If you are interested in APRS, have a Macintosh computer and would like to have client that works whether aprs.fi does or not? Well, I’ve got the thing for you.
Jeremy, NH6Z, has packaged up a binary for just such a purpose. Xastir is available for OS X, 10.5 and above. Sorry, no PPC release is forthcoming (but really, you need to upgrade if that is a problem). Please, download the binary and please read the instructions from here. You will also note that he has compiled WSPR- so get busy!