I don't know of an open source version, but Supercard is still available for the mac, and will even play a large proportion of Hypercard stacks. http://www.supe

I don't know of an open source version, but Supercard is still available for the mac, and will even play a large proportion of Hypercard stacks. http://www.supercard.us/ http://www.supercard.us/ Pricey, mind!