See also the HTML Standard FAQ.
The Web Hypertext Application Technology Working Group (WHATWG) is a community of people interested in evolving the web through standards and tests.
The WHATWG was founded by individuals of Apple, the Mozilla Foundation, and Opera Software in 2004, after a W3C workshop. Apple, Mozilla and Opera were becoming increasingly concerned about the W3C’s direction with XHTML, lack of interest in HTML, and apparent disregard for the needs of real-world web developers. So, in response, these organisations set out with a mission to address these concerns and the Web Hypertext Application Technology Working Group was born.
In 2017, Apple, Google, Microsoft, and Mozilla helped develop an IPR policy and governance structure for the WHATWG, together forming a Steering Group to oversee relevant policies.
It is spelled WHATWG, all uppercase, no spaces. It has various pronunciations: what-wee-gee, what-wig, what-double-you-gee.
The WHATWG’s focus is on standards implementable in web browsers, and their associated tests. Our existing work can be seen on the standards page.
There are lots of ways you can get involved! You might want to get started by reviewing the standards and filing issues. You can also browse our list of good first issues on GitHub, if you're interested in helping us editing the standards directly. Also, feel free to join