SheetCAM is available as an alternative to Fusion 360. SheetCAM is CAM software that is used to create toolpaths and generate G-codes. SheetCAM does not have CAD functions, so you will need to use a CAD program in conjunction with SheetCAM. Since SheetCAM is CAM-only software, some find it simpler and easier to understand than Fusion 360. SheetCAM is paid software that costs $140.