chezmoi : Manage your dotfiles across multiple diverse machines, securely.
Harpoon : CLI tool for open source and threat intelligence. Harpoon is a tool to automate threat intelligence and open source intelligence tasks. It is written ...
csscss : csscss will parse any CSS files you give it and let you know which rulesets have duplicated declarations.
howdoi : Instant coding answers via the command line.
* { CSS:resetr } : To help you find the perfect CSS-reset styles, CSSresetr lets you try all the best CSS Resets on a variety of web pages – even your own.
PurgeCSS is a tool to remove unused CSS. It can be part of your development workflow.