etk is a library for the [Ebitengine](https://ebitengine.org) game engine that simplifies creating graphical user interfaces. The [README](https://code.rocket9labs.com/tslocum/etk#features) lists the features and widgets. [Boxcars](https://code.rocketnine.space/tslocum/boxcars) uses etk to greatly simplify UI development, as its single codebase targets web, desktop and Android.
The graphical client is powered by the Ebitengine game engine.
Source code: