You really should try SuperCard!!
So similar to hypercard with much more options!

I have a couple of PowerMacs (both PPC601) which I use only to store and manage my e-book collection. I was handed down an LCIII, which I believe is a Motorola 68030 in it. What's the latest OS I can run on it? Anyway to get an SD card reader for these? USB would be better, but my hope isn't that hi...