ANSWER:

WebPlatform.org sounds like what you want.

Web Platform is an open community of developers building resources for a better web, regardless of brand, browser or platform. Anyone can contribute to the reference, by collaborating in the wiki documentation pages, asking and answering questions in the Q&A forum, sharing and commenting on the WebPlatform blog posts, and communicating through the IRC chat channel.

WebPlatform was convened by W3C, that is seeking to create an online reference of Web standards. The project is a collaboration among Adobe, Apple, Facebook, Google, HP, Microsoft, Mozilla, Nokia, Opera, and W3C. There are currently efforts under-way to migrate the data from sources like MDN into WebPlatform.

zuallauz from http://programmers.stackexchange.com/questions/198949