MBEDIT is a multi-platform TextEditor. Presumably, it means Michael Braun Editor.
Author: Michael Braun Homepage: http://www.braun-home.net/michael/ Family: AEDITFamily Platform: MS-DOS, Windows, Unix, OS/9 License: Open source
It runs on MSDOS, Windows, Unix, and (rarest of all) OS/9 and OS/9000 from MicroWare?.
It is a clone of AEDIT that was originally from Intel.
Screenshot: