GERBER Great little program. Does a variety of financial calculations ranging from the obvious (figure actual interest rates based on a published APR), to the truly tricky (bond and stock valuation).
Great for finance professionals, business students, and anyone who enjoys micro-managing their money.
There seems to be a sub-menu bug in the recent releases. I understand this is an OS X 10.4 problem. In any case, scrub the menus, some have sub-menus and they aren't obvious.
(Version 2.6)