Stefano Comino and Fabio Manenti have written a useful paper [PDF] on dual licensing in open source. It's a decent resource for helping developers and vendors figure out why, if, and how to dual ...

Stephen O'Grady has an interesting post about the past, present, and future of MySQL over on Redmonk, including how its dual-license strategy may limit its community: Generally, this model has served ...

Back in 1976, Bill Gates wrote an open letter to hobbyists. He asked, “Who can afford to do professional work for nothing? What hobbyist can put three years into programming, finding all the bugs, ...

Obtain licenses in general and special education. This dual license program prepares teachers to reach all learners, and make new teachers more flexible and marketable.

Sun plans to dual-license OpenSolaris, making the source code available under the GPL3 as well as the CDDL. Sun supposedly plans to complete the dual-licensing process after the GPL3 solidifies.