Skeleton : Skeleton: A Dead Simple, Responsive CSS Boilerplate for Mobile-Friendly Development
Normalize.css : A modern, HTML5-ready alternative to CSS resets
Normalize.css makes browsers render all elements more consistently and in line with modern standards. ...
emotion : emotion is a high performance, lightweight css-in-js library that supports both string and object based styles.
darken : Easy control over your dark mode in a web environment
Feather : Feather is a collection of simple open source icons. Each icon is designed on a 24x24 grid with an emphasis on simplicity, consistency and readability...
UrbanFonts : UrbanFonts features an amazing collection of free fonts, premium fonts and free dingbats.
Insight.io : Insight.io brings IDE-like code intelligence features such as cross-reference, class hierarchy and semantic search, right into your browser and helps ...
Firebug Lite : A JavaScript file you can insert into your pages to simulate the Firebug console in browsers that are not named Firefox.
Chrome Experiments : Google Chrome Experiments is an online showroom of web browser based experiments, interactive programs, and artistic projects.
PURL : PURLs are persistent URLs, they provide permanent addresses for resources on the web.
TagUI : TagUI is a general purpose tool for automating web interactions
Browse old web pages the old way with virtual browsers in the browser.
Genericons : Genericons are vector icons embedded in a webfont designed to be clean and simple keeping with a generic aesthetic.
Use genericons for instant HiDPI, ...
The Ultimate Oldschool PC Font Pack : Home of the world's biggest collection of classic text mode fonts, system fonts and BIOS fonts from DOS-era IBM PCs and compatibles