You might also like http://pocketdigi.sourceforge.net -- download the x86 version for a PC or the Arm version for a Windows PDA (Pocket PC). It is the same CW decoder as in gMFSK for Linux, and fldigi (though fldigi might be a later revision), originally based on the VE7IT engine, and the unix-cw project.
Leigh/WA5ZNU