Spar uses Rack and Sprockets to provide an asset development environment very similar to the asset pipeline found in Rails. It also has built in deployment tasks for deploying your entire site to AWS S3 and Cloudfront.

Archetype is a Compass/Sass based framework for authoring configurable, composable UI components and patterns. The natural language syntax that Archetype provides allows designers and developer to discuss UI compositions using the same vocabulary.

Bootstrap is a toolkit from Twitter designed to kickstart development of webapps and sites.

Dynamic image generation for Compass using ChunkyPNG/PhantomJS.

Compass mixin for using the Drop Shadow values that Photoshop uses to create CSS3 box-shadow. Making it easier to convert PSD files to CSS.

Helps you create generic WordPress themes and Thematic child themes

Highly configurable CSS Grid Framework written in Sass.

Helpesk includes: tickets, ticket types, email-notification, FAQ, subscribers

Realtime Rails log in your browser. For Rails 3.1+

Titanium Rapid Development Framework

Build multiple stylesheets based off globally defined breakpoints

Aurora Subthemes!

Compass extension for blueprint css framework

Compass and Sass port of Nathan Smith's Formalize HTML form normalizer.

Guard::Compass automatically rebuilds scss|sass files when a modification occurs taking in account your compass configuration.

Sass Color Helpers

Flexible icons system.

Create HTML and CSS Style Tiles with Sass & Compass

Color Hacker is a Compass plugin which uses Sass color functions to find find the relationships between colors

Use box-sizing: border-box; with impunity. Borderbox outputs equivalent CSS for IE6 & 7