I'm not really that sure of Sailfish's open source status. It seems the launcher, lock-screen, and system apps are closed source, personally I don't mind about those too much, but I do mind if the UI library is closed. Does anyone know the status of that?

Edit: It seems the UI library, Silica, is sort of half open, half closed: https://github.com/dm8tbr/sailfishsilica-qt5. Really think Jolla should look at that.