Note: You must be willing to pay the license fee, as the free version is too restrictive for practical circuits. Choose FlatCAM if:
. It runs on any OS, has excellent isolation quality, and the developer (Marius Stanciu) is active on forums. Only buy CopperCAM if FlatCAM fails to parse your Gerbers or you need the specialized engraving tools.
FlatCAM utilizes a more modern, tabbed interface paired with a powerful command-line console.