A pure-Ruby X11 terminal
I use this as my regular xterm replacement... Why? Because I can. It's pure-Ruby down to the font-renderer, and the X11-bindings. (I also run a Ruby WM, a Ruby editor, file manager, and more, so this is just par for the course of my descent into madness) It supports double-width and double-height text, unicode (but double-width characters may currently be rescaled down), layering fonts, special rendering of box-drawing characters (to ensure they seamlessly scale and connect, and has reasonably complete vt-100/vt-102 emulation. The whole thing is available as a Rubygem and comes with an…
In plain words
A pure-Ruby X11 terminal that serves as an xterm replacement with the entire system—including font rendering and X11 bindings—written in Ruby. It supports double-width and double-height text, Unicode characters, layered fonts, and special box-drawing character rendering. The terminal includes reasonably complete VT-100/VT-102 emulation and is available as a Ruby gem. It also includes an ANSI text backend, allowing the terminal to run within another terminal.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
I use this as my regular xterm replacement... Why? Because I can. It's pure-Ruby down to the font-renderer, and the X11-bindings. (I also run a Ruby WM, a Ruby editor, file manager, and more, so this is just par for the course of my descent into madness) It supports double-width and double-height text, unicode (but double-width characters may currently be rescaled down), layering fonts, special rendering of box-drawing characters (to ensure they seamlessly scale and connect, and has reasonably complete vt-100/vt-102 emulation. The whole thing is available as a Rubygem and comes with an ANSI text backend, so you can run your terminal in your terminal. The bulk was written manually, but the last few days I had Claude write a test harness to shake out a bunch of bugs, and start refactoring and cleaning up the code base (it's still full of warts).
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