[knocte]

>Very likely - but details/license TBA. >Yes, there will always be a free way of using Fuse and Uno.

If I had to choose, I would release the whole platform (not only Uno and your libraries, but your whole toolkit/IDE) under dual license: RPL and proprietary. This way, if people choose the RPL way, they're forced to publish the sources (even if they distribute the app internally), unless they buy you a license. And this way you allow contributions from outside too.