Jasc Paint Shop Pro, up through PSP 8, had a free companion
application called Animation Shop.
I've done a few 5 to 10 second demos. The downside is that
it's not practical to show cursor movements; you have to replace,
fade, wipe, etc. from one shot to the next. I suppose you could
insert a cursor into each of the transition frames, but that's what
tools like Captivate were invented for.
By the way, FWIW, my Macintosh SE came with a set of animated
demos for new users. That was in 1988. I don't know what technique
they used to build the demos, but they did a good job in showing me
what buttons to press.
(Students of ancient history can research Macintosh_SE on
Wikipedia.)
Harvey
P.S.
Corel, which bought Jasc Software, sells a $39 application
called Animation Shop 3 and another product, Ulead GIF Animator 5,
for $49.95.