I use 3-axis CNCs for machining solid wood. Sometimes I mill other materials but I mostly focus on wood and sheet stock The majority of my work is 3D carving abstract sculpture and 3D design details and 2-1/2 D part cutting for my different furniture lines.
Mecsoft’s RhinoCAM and Visual CAM come with hundreds of post processors covering just about every commercially available 3,4 and 5-axis CNCs. Post-processor creation software is included that lets you develop or modify your own post. Plus, they’ll help you create a customized post processor for your CNC if needed.