How to do bidirectional or reverse debugging of programs?

Question

Has anyone actually used a reversable debugger? The only product that Google turns up is UndoDB. It is for apparently for Linux only.

Answer 1

The word your looking for may be "Omniscient Debugging".

Here is one: http://www.lambdacs.com/debugger/

The UndoDB page has some links to (expensive) commercial debuggers.