Which products do you feel truly have no alternatives, and which features define that for you? The only one I can think of is After Effects, which appears to d

Which products do you feel truly have no alternatives, and which features define that for you? The only one I can think of is After Effects, which appears to do a broader set of things than any other single package (but I could be wrong). The rest, well I am not convinced, though there are some edge features in each package that undeniably would sell them to a few people, and that is, I guess, in the right way of things.