ENDEDIT is a B800 text screen editor. Such screens were usually displayed as an end screen when exiting Dos games.
Source code repository: https://github.com/jval1972/ENDEDIT
Windows based editor designed to allow writing extensions covering any user format of raster fonts. Supports fixed/variable character height/width, incomplete character sets, etc. Has a lot of useful character-editing functions (italicize, bold, shift...