Submission + - Citadel becomes the first GPLv3 "Exchange kill (citadel.org)
IGnatius T Foobar writes: "Open source has more than a few "Exchange killer" messaging and collaboration packages to choose from. Some are better than others, and some are "free-er" than others. It's disappointing that some of the ones that look good end up requiring a paid upgrade to a commercial version if you want the full feature set. Happily, the folks at Citadel.org have announced that their system is now end-to-end GPLv3 across the entire code base, making the entire platform available to everyone on the same terms."
