A Sass-based CSS Meta-Framework that allows you to mix and match any of the following CSS frameworks:

• Compass Core - Wiki Documentation
• Blueprint - Wiki Documentation
• YUI - Wiki Documentation
• 960 - Wiki Documentation
• Other frameworks can be added relatively easily. Port your own!

1. A command line tool for managing your Sass projects.
2. Simple integration with Ruby-on-Rails, Merb, StaticMatic, and even non-ruby application servers.
3. Loads of Sass mixins to make building your website a snap.

Please see the wiki

Compass is written by Chris Eppstein. Chris is the Software Architect of Caring.com and a member of the Sass core team.