MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
It's this one: https://www.thingiverse.com/thing:1832235
I liked it while I kept spools on the top of my Prusa. I've since put them on a self-standing support above the printer, so that the weight isn't added to the top of the printer itself.