Hard to word that language to prevent a corporation from forking it, as you have to "fork" the project locally to make modifications and send patches back. I'm

Hard to word that language to prevent a corporation from forking it, as you have to "fork" the project locally to make modifications and send patches back. I'm sure nobody here wants to stop a random engineer at a corporation from contributing to a community project? If you want a corporation to avoid it like the plague, just make it GPLv3. If you really want to screw them, go with AGPLv3. This way you keep a true open source license, but don't have to worry about corporate control.