HyperGatekeeper is an anti-virus stack for all known HyperCard script viruses. It attempts to detect unknown viruses as well, but whether that will work or not depends on the individual viruses.
All documentation has been included in the stack itself.
I have tried to make this stack the best it can be, but then no software is perfect. Any suggestions or complaints are welcome. (Please give a reason for your complaint, not just "I hate this thing; I'm not using it.")
This revision (1.2.1) is faster and doesn't write to stacks when it doesn't have to (and so doesn't change the modification date all the time).