CSS Lint : CSS Lint points out problems with your CSS code. It does basic syntax checking as well as applying a set of rules to the code that look for problemati...
PurgeCSS : PurgeCSS is a tool to remove unused CSS. It can be part of your development workflow.
librosa : librosa is a python package for music and audio analysis. It provides the building blocks necessary to create music information retrieval systems.
Sizzy : A tool for developing responsive websites crazy-fast.
Open sourced : https://github.com/kitze/sizzy
Galen Framework : Automated testing of look and feel for your responsive websites.
Layout testing seemed always a complex task. Galen Framework offers a simple solution...
csscss will parse any CSS files you give it and let you know which rulesets have duplicated declarations.
