TagSoup is free and Open Source software, licensed under the Academic Free License version 3.0, a cleaned-up and patent-safe BSD-style license which allows proprietary re-use. It's also licensed under the GNU GPL version 2.0, since unfortunately the GPL and the AFL are incompatible. You can choose to license TagSoup from me under either the GPL or the AFL.
This release represents the end of my current plans for TagSoup. I will continue to fix bugs, but it now does everything that I foresaw back in 2002 when I started this project, and a great deal more. Thanks to everyone on the tagsoup-friends mailing list for their efforts.