CAD-COMPO 2 is a plug-in software includes BPT-Pro2 and EXDXF-Pro2. BPT-Pro2 is a software to add a highly functional 2D-CAD program into Illustrator. EXDXF-Pro2 provides that to import CAD standard DXF files to Illutrator, and to export.
Illustrator Recovery Kit knows how to recover corrupt Illustrator file and rebuild the structure of affected AI documents regardless the version of Adobe Illustrator application in use. It is the safest way of restoring damaged illustrations