Pretty cool

Scribo is designed to work with your models and renders your content inside customer designed layouts.

Multiple choices selector (similar to select2, but with rails hotwire)

Rails engine with replacement for flash messages, Signum allows for messages from background jobs.

Take snapshots of responses and mail messages while testing, and inspect them in a browser. A Ruby on Rails engine.

Keep track of conference attendees and presentations with this plugin.

All the advantages of client-side components, but with minimal Javascript plus server-side rendering

Superfast CMS is designed to make publishing simple, fast, and scalable.

Material Web Components for Hotwire Turbo.