Jen's own file editor.
Author: Jens Altmann Homepage: http://home.arcor.de/jensaltmann/JFE/jfe_eng.htm Family: MicrosoftWindowsEditors Platform: Windows License: Freeware
This appears to be a Windows based text editor for programmers. It contains features such as built-in compiler management, SyntaxHighlighting and the usual MultipleBuffer? paradigm.
I'm not sure what programming language it is written in.
Screenshot: