Typebase.css
This tool can optimize your website's CSS codes, especially for web developers and designers
Responsee II
A framework for streaming the site that is very light and efficient, with this framework of your website perfectly displayed on all screens of any size.
ProCSSor
With this tool, you can optimize your CSS, perfectly code your code, and arrange your CSS in order to get the best possible load on it.
CSS Lint
Use this tool to find and fix errors in your CSS that may be in the future for you.
Code Beautifier
With this tool, you can remove your CSS codes more often, as well as features that you really do not need.
CleanCSS
When you write all your codes and your work is over, now it's time to compress CSS, which will do the job well for you.