Photon : UI toolkit for building desktop apps with Electron.
css3-mediaqueries-js : make CSS3 Media Queries work in all browsers (JavaScript library)
Skeleton : Skeleton: A Dead Simple, Responsive CSS Boilerplate for Mobile-Friendly Development
Woah.css : CSS Animation Library for eccentric web developers.
Anime.js : Anime.js is a fast, multipurpose and lightweight JavaScript animation library with a simple, yet powerful API.
It works with CSS properties, SVG, DOM ...
98.css is a CSS library for building interfaces that look like Windows 98.
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.
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, ...
Fawnt : Fawnt is a font resource for designers, developers, and anyone that appreciates the web's highest quality fonts.
Home of the world's biggest collection of classic text mode fonts, system fonts and BIOS fonts from DOS-era IBM PCs and compatibles
Selenium : Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testin...
When can I use... : Compatibility tables for support of HTML5, CSS3, SVG and more in desktop and mobile browsers.
SPF : A lightweight JS framework for fast navigation and page updates from YouTube
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, ...
5978 High Quality Icons : This is beyond question the largest supply of free icons ever published in one article. With this exceedingly massive supply, your icon solutions for ...
System UIcons : A free icon set designed for systems and products. Use how you want, without attribution.