Netfabb is not available for Mac but there are plenty of alternatives that runs on macOS with similar functionality. The best Mac alternative is Cura, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Netfabb and 12 are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Netfabb are Slic3r (Free, Open Source), F3D (Free, Open Source), ReplicatorG (Free, Open Source) and ideaMaker (Free).
This is the software that will drive your MakerBot Replicator, Thing-O-Matic, CupCake CNC, RepRap machine, or generic CNC machine. You can give it a GCode or STL file to process, and it takes it from there.
Prepare files for printing with ideaMaker, Raise3D’s powerful slicing software. The user friendly interface can prepare STL, OBJ and 3MF files within 2 clicks, while defined settings provide limitless customization for advanced users.
Software for controlling RepRap style 3D-printer like Mendel, Darwin or Prusa mendel. Works with most firmware types. It is optimized to work with Repetier-Firmware Other working firmware is Sprinter, Teacup, Marlin and all compatible firmwares.
KISSlicer is a fast, easy-to-use, cross-platform program that takes 3D files (STL) and generates path information (G-code) for a 3D Printer. The FREE version has all the features needed for the hobbyist who uses a single-head machine.
KISSlicer vs Netfabb opinions
pros, cons and recent comments
I have been using Kisslicer since 2014. It is easy to work with. The latest version which came out in late 2017 is even easier to work with and has many more control parameters for making your prints come out more successfully than before.