Simple web based ascii flow diagram drawing tool, draw boxes, lines, arrows and type, then export straight to text/html.


Monodraw is described as 'Allows you to easily create text-based art (like diagrams, layouts, flow charts) and visually represent algorithms, data structures, binary formats and more. Because it's all just text, it can be easily embedded almost anywhere' and is a Diagram Editor in the business & commerce category. There are more than 10 alternatives to Monodraw for a variety of platforms, including Windows, Linux, Web-based, Mac and Flathub apps. The best Monodraw alternative is ASCIIFlow, which is both free and Open Source. Other great apps like Monodraw are Playscii, MonoSketch, PabloDraw and Letterpress ASCII.
Simple web based ascii flow diagram drawing tool, draw boxes, lines, arrows and type, then export straight to text/html.


Playscii is a powerful, open-source ASCII-based art, animation, and game creation tool. Advanced layer-based tools and import and export options are available through a familiar window system with the appeal of classic DOS development tools like QBasic.






MonoSketch is a powerful ASCII sketching and diagramming app that lets you effortlessly transform your ideas into visually stunning designs.




MonoSketch is free and available on the web, with no need to download and install, and available for Windows and Linux too.


PabloDraw is a cross-platform text editor designed for creating ANSI and ASCII art, similar to that of its DOS-based predecessors; ACiDDraw (1994) and TheDraw (1986).

Letterpress converts your images into a picture made up of ASCII characters. You can save the output to a file, copy it, and even change its resolution! High-res output can still be viewed comfortably by lowering the zoom factor.



This app lets you draw diagrams, tables, tree view, art and more using only characters. There are many stiles to choose from and multiple tools available to use such as:




Versatile Unicode, ANSI & ASCII Art editor for the Linux/Unix/macOS terminal, with animation, 256 color support and custom themes.


Ascii Generator 2 (Ascgen2) is an application to convert images into high quality ASCII art - text that accurately represents the original image. The only program of its kind to support variable width fonts and real-time output adjustment and more.




Not a plain text diagramming tool


Charaster is a browser-based editor for ASCII grahics and art. It provides a robust set of raster-style editing tools such as Line, Rectangle and free-hand drawing tool; all configurable by specifying the character, color and styling to use while drawing.

Not a plain text diagramming tool


free and open-source web-based application for creating and editing images consisting of text characters and hieroglyphs (ASCII graphics / Shift_JIS art / Kaomoji and many others).






Not a plain text diagramming tool


Not a plain text diagramming tool