Ascii Generator 2 - Ascii Generator 2 (Ascgen2) is an application to convert images into high quality ASCII art - text...
Playscii - Full-featured ASCII art and graphic editor and game creation tool
draw.io - Online diagramming application
Charaster - Open-source ASCII art editor for browser-based, raster-style editing
UMLGraph - UMLGraph is a professional automated drawing tool that allows the designers the declarative specification and drawing of UML class and sequence diagram.
PabloDraw - PabloDraw is an Ansi/Ascii text and RIPscrip vector graphic art editor/viewer with multi-user capabilities.