How to Run HyperCard Under Emulation
If you want to try HyperCard yourself, you can download an archive containing a hard disk image with Mac OS 8 and HyperCard installed, plus the ROM image file needed for most emulators, here.
The only Classic Mac emulator I know to work is Basilisk II. If you run MS Windows, you can get that version here.
All comments regarding this being some morally depraved thing to do will be deleted.
In addition to Basilisk, may I suggest SheepShaver, by the same folks, and the one I've been using ever since Apple stopped supporting Mac OS Classic.
Sheepshaver VM with shared drive, Mac OS 9, Hypercard: http://jamesfriend.com.au/running-hypercard-stack-2014
What about vipercard, which can (only) be run on the web ?
https://www.vipercard.net/
Note, I don't know the original hypercard and only did a basic test of vipercard.
Unfortunately, the link to http://nosuchlabs.com/pub/HyperCard-Forever.zip no longer works.
Dear Arne,
Updated article with new link; try now.
Yours,
-S