csscss : csscss will parse any CSS files you give it and let you know which rulesets have duplicated declarations.
wuzz : Interactive cli tool for HTTP inspection
Wuzz command line arguments are similar to cURL's arguments, so it can be used to inspect/modify requests cop...
Compass : Compass is an open-source CSS Authoring Framework.
chezmoi : Manage your dotfiles across multiple diverse machines, securely.
Phantomas : PhantomJS-based web performance metrics collector and monitoring tool
PurgeCSS is a tool to remove unused CSS. It can be part of your development workflow.