Rocket.chat is an open source web chat platform. It's multi-platform and highly configurable.
Every business is looking to increase its conversion rates. Thanks to NowSquare, you can get all the high-converting landing pages you can think of in one Mighty Deal! ...
Dio is a lightweight virtual DOM framework. It's only 6kb minified and gzipped.
APImock is a very basic fake API server. It can be used for building the front end of an app before the back end is ready.
Weex is a mobile cross-platform UI framework. It's lightweight, high-performance, and extendable.
Multiple.js is an experiment for sharing backgrounds across multiple elements using CSS.
BlazeCSS is a modular CSS framework for building well-structured websites quickly. It's halfway between monolithic frameworks like Bootstrap and microframeworks like Milligram.
Stack Overflow Documentation is a comprehensive crowd-sourced programming language documentation site. It covers everything from CSS to PHP to MySQL and dozens of others.