Short description of EFM - Etecad File Manager 2.10.1: EFM is a Windows CAD graphics file manager and viewer all rolled in one. EFM completely replaces the Windows Explorer and provides additional features designed to handle CAD and image files.Not only does EFM allow you to view AutoCAD drawings, it can locate, retrieve, archive, convert DWG and PLT files and plot them too. You can attach descriptions to files and directories for easy identification as well as search for drawing files.