What is w3c and Whatwg?
The World Wide Web Consortium (W3C) is a community of developers working towards setting global standards for development.
WHATWG is short for Web Hypertext Application Technology Working Group. It was created during a W3C workshop session by working individuals of Apple, Mozilla and Opera Software in 2004. WHATWG is a community of developers focused more on HTML rather than XHTML and working on standards to improve on user needs.