Aside from the license, it's annoying that "Propel" is Windows only and only supports MachXO3D (though they say they will add more chips soon). Also, I'm not a

Aside from the license, it's annoying that "Propel" is Windows only and only supports MachXO3D (though they say they will add more chips soon). Also, I'm not a huge fan that they are copying Xilinx's "IP Integrator" graphical system builder. It would be far better if the tool was somehow HDL-centric instead of schematic-centric (not that I've tried it- just looking at the documentation).