Auto Mirror EX is an automated tool for modifying meshes symmetrically in Blender. It streamlines the process of deleting half a mesh, setting up a mirror modifier, and enabling clipping into a single action. The add-on is an enhanced version of the built-in Auto Mirror functionality, offering quick keyboard shortcuts for X, Y, and Z axis mirroring.

The tool includes a Mirror Mirror function, which allows users to mirror objects across another selected object acting as the axis. It also provides a Toggle Mirror feature to quickly enable or disable modifiers named Mirror or mirror_mirror. The tool is accessible through the 3D View Property Shelf.