raintron

https://github.com/raindeer-rb/raintron

Raintron wraps a Raindeer web app in a native desktop window (via webview_ruby) and packages it into a single cross-platform executable (via Tebako). Add it to an existing Raindeer app's Gemfile, run `raintron install`, and `bin/desktop` opens your app in a window instead of a browser tab.