Shorthand.sass is a project mainly written in ..., it's free.
Zap! Shorthand SASS @Mixins for bamf stylists.
A mixin library for SASS that lets us write styles really effing fast. Watch for updates: http://sass-lang.com/docs/yardoc/file.SASS_CHANGELOG.html
Example
---------------- styles.sass ---------------- @import "ss/shorthand.sass"
.logo background: #FF0000 +s(100,100,400,200,a)
&:hover background: #FF00FF
screenshot of styles.sass: http://cl.ly/1o0b1n0Z192N0G1x0131