Hi Mary,
I know what used to be lacking on the Mac version of Snagit: it couldn't do video captures. But it does now - 2 months after I bought Camtasia for Mac. But Camtasia for Mac costs less than a 100 € so I wasn't ruined.
Never occured to me to use either for making interactive exercises though. Hot Potatoes does (nearly) all I need (with lots of the customisation that are so easy even for non techies like me) and can be made to look reasonably "smart" though not to rival with Flash tools.
Cheers,
Glenys
PS: You mean to say you don't have Lazarus Form Recovery installed?
Haven't lost a post that way in years. In fact, it recovered this one for me because Firefox crashed as I was writing to you. (I couldn't use Lasarus in TinyMce directly, but I clicked on "Paste from Word" and that did the ticket.)