Who hasn’t tried a demo before? They’re a good way to get to know some software (or a video game) without having to shuck out the bucks for the full thing. I guarantee you, anyone offering a free demo… thinks their stuff is the greatest under the sun. So what’s a person to do? Follow the yellow brick road (links), and read about what each of these is about. Then, give one or two (or all of them) a shot.