Great piece of software, great support.
I've been a Flip Builder Plus user for a few years, first through a communication agency and then as a freelance graphic designer. It's a comprehensive solution that allows you to create highly customized flip books, which are a great way to illustrate a number of different publication projects. Moreover, it's a pay-once-own-forever license, which is not that common anymore in software solutions. I recently had a problem with the program's activation process, due to a computer upgrade/format, and Ashley from FlipBuilder Support solved it immediately.