Some random ideas: http://kate-editor.org/ http://www.jedit.org/ https://projects.gnome.org/gedit/ http://www.scintilla.org/SciTE.html http://ww

Some random ideas: http://kate-editor.org/ http://www.jedit.org/ https://projects.gnome.org/gedit/ http://www.scintilla.org/SciTE.html http://www.kdevelop.org/ Also eclipse and netbeans if you add some plugins?