Comment by andolanra

The other one I mentioned—Maze Rats—is licensed as CC BY 4.0, so that might be a good place to start! (The Black Hack is licensed under the OGL 1.0, which unfortunately means it's not immune to the whole mess that this thread is about, but I'm hoping that a lot of the creators who put stuff out under the OGL 1.0 either come up with a new license that's not associated with WotC or relicense their stuff under something like a CC license. I guess we'll see!)