Tar for beginners
It's free and open-source, but for Windows only right now. I might make it into a project just to attract people to make it more portable.
I couldn't find a good Perl module that creates tar files, so I decided to use a Windows port of GNU tar. To make it easier to use for other purposes, I created EZ TAR. *** Guess I can't post the link until I post five times, and I don't know anything about Linux, so you may never know where to get EZ TAR. Consider this a vote to abolish that no-link rule.