WinSlam!© does not suck.

It is written in C++ and compiles/runs on any recent version of Windows.

There is a command-line only version of the program called Slam!. Contact me if you're interested in it (it could potentially be ported to UNIX without too much trouble).

This program was originally written as as experiment in Win32 GUI programming. It uses some code from Reliable Software, which has a great set of object-oriented wrapper classes for some common Windows API calls necessary for Win32 GUI development. The Reliable Software code is really good, check it out.