In the future you will find here the english version of Greatkartei.
Right now i'm tryin' hard to learn VB to port the program to Windows.
You can add yourself to my newsletter to get informed when the Win Version becomes available.
If you don't wan't to wait and need the program right know, there is a chance to use the Amiga emulation software WinUAE. Use only the newet version, because a bug in the older ones makes the use of Greatkartei impossible.