Dashing is a Sinatra based framework that lets you build beautiful dashboards. Check out a demo over here. Here’s another one, optimized for 1080p screens. Key features:

• Use premade widgets, or fully create your own with scss, html, and coffeescript.
• Widgets harness the power of data bindings to keep things DRY and simple. Powered by batman.js.
• Use the API to push data to your dashboards, or make use of a simple ruby DSL for fetching data.
• Drag & Drop interface for re-arranging your widgets.
• Host your dashboards on Heroku in less than 30 seconds.

This project was created at Shopify for displaying custom dashboards on TVs around the office.

Demo: http://dashingdemo.herokuapp.com/sample

Site: http://dashing.io/