Rack::Environmental indicates which environment your web application is running in (staging, test, etc.).

Add anchors to your h1-h6 tags in Middleman or Rack

The DceLti engine simplifies integrating LTI authentication for Rails apps via the IMS::LTI gem.

This is a Rack middleware wrapper for gsub. You can replace text on your web page without worrying about accidentally modifying the HTML tags themselves.

Make your website faster by deferring loading of images.

Any URLs that occur in the text of the web page are automatically surrounded by an anchor tag.

Display in a div the hostname, running user, rails env.

Uses Albino and Pygmentize to add highlighting to code blocks

A simple gem to give sitemesh-like functionality in a rack app using decorators.