htty : htty is a console application for interacting with web servers. It’s a fun way to explore web APIs and to learn the ins and outs of HTTP.
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...
📦 Parcel : Blazing fast, zero configuration web application bundler
UnCSS : UnCSS is a tool that removes unused CSS from your stylesheets. It works across multiple files and supports Javascript-injected CSS.
csscss : csscss will parse any CSS files you give it and let you know which rulesets have duplicated declarations.
PurgeCSS is a tool to remove unused CSS. It can be part of your development workflow.