It's been pointed out to me that the recent Plan 9 article does not match the licensing agreement. Nobody has any idea why the speaker didn't understand that the software community is likely to react badly to the phrase "any changes they make will become AT&T's property", but there is a rumor that they *may* have been a lawyer. ;-} As I understand it, the license is roughly as follows: + For $350, you get copies of the complete source and binaries for Plan 9. You can make this copy available internally to your company, i.e. NFS is okay as long as it's not on the Internet. + You agree to not resell it or provide a product or service based on it without reaching an agreement with AT&T first. + You agree that if you create a derivative work, you will license it to AT&T on a royalty-free basis. (I'm also told that some of the wording means that hardware specific things are excluded). There's nothing about modifications becoming the property of AT&T. The license is on the Web at http://plan9.att.com/plan9/shrink.html. --keith