Anything out of BSD land would have a compatible licence with both commercial vendors and the GPL. For example http://en.wikipedia.org/wiki/HAMMER http://en.wik

Anything out of BSD land would have a compatible licence with both commercial vendors and the GPL. For example http://en.wikipedia.org/wiki/HAMMER http://en.wikipedia.org/wiki/HAMMER If your talking about writing something and being sure to be able to read it at some future time UFS is read-compatible pretty much everywhere.