CopperCAM is a commercial application from Galaad designed specifically for managing isolation engraving, drilling, and board cutouts.
FlatCAM (now largely succeeded by FlatCAM 8.5 and the newer "FlatCAM-Electronics" fork) is an open-source application written in Python, using the PyQt framework. It is cross-platform (Win/Mac/Linux) natively. Coppercam Vs Flatcam
Since CopperCAM is closed source, the “feature” would be a or external tool : CopperCAM is a commercial application from Galaad designed
Would you like a step-by-step example of creating isolation G-code in FlatCAM for a simple PCB? Coppercam Vs Flatcam