Gladiator (short for Glimmer Editor) is a Glimmer DSL for SWT sample project under on-going development that demonstrates how to build a text editor in Ruby using Glimmer DSL for SWT (JRuby Desktop Development GUI Library). It is not intended to be a full-fledged editor by any means, yet mostly a fun educational exercise in using Glimmer. Gladiator is also a personal tool for shaping an editor exactly the way I like, with all the keyboard shortcuts I prefer. I leave building truly professional text editors to software tooling experts who would hopefully use Glimmer one day. Otherwise, I have been happily using Gladiator to develop all my open-source projects since May of 2020.