Prettier : Prettier is an opinionated code formatter. It enforces a consistent style by parsing your code and re-printing it with its own rules that take the max...
stylefmt : stylefmt is a tool that automatically formats your stylesheets.
Online javascript beautifier : Beautify, unpack or deobfuscate JavaScript and HTML, make JSON/JSONP readable, etc.
Compass : Compass is an open-source CSS Authoring Framework.
