Paco - Never miss a thing on Slack — be more calm and productive
Sass - Syntatically Awesome Style Sheets
awesome - A dynamic window manager for the X Window System developed in the C and Lua programming languages.
PostCSS - Increase code readability. Add vendor prefixes to CSS rules using values from Can I Use. Autoprefixer will use the data based on current browser popularity and property support to apply prefixes for you.
Lowdown - Lowdown unleashes the valuable content locked within Slack and emails it to your members so they don't miss key information.
Stylus - EXPRESSIVE, DYNAMIC, ROBUST CSS