ascdraw: A High-Speed, Keyboard-First Editor for ASCII and UTF-8 Diagrams
ascdraw: Editor for ASCII/UTF-8 diagrams (in 144FPS)

I built ascdraw as a native, keyboard-driven editor for creating diagrams using ASCII and UTF-8 characters. It offers an infinite Unicode canvas with support for layers, colors, and high-performance rendering at over 120 FPS. While the software is released under the GPLv3 license, I suggest a voluntary contribution of $9.99 to support its ongoing development and feature evolution.
The canvas renders at 120+ FPS, which matters more than you might think in a keyboard-first editor.