GitHub - NicoSchlueter/HelicalGearPlus: Generates straight, helical and herringbone external, internal and rack gears as well as non-enveloping worms and worm gears
Fusion 360 Internal Gear Generator – BaxEDM
Manufacturing Tools – Niklas Pöllönen
Worm gears in Fusion 360 - plugin (update available - see description) - YouTube