See also: Polish translation of this page as of June 2007
Extensions to HTML and the DOM to make it more suitable for application development, as well as a serious tightening up of the conformance requirements compared to earlier revisions of HTML.
Status: This draft is in active development. Expect to see big changes in the coming days and weeks.
Note: This draft is a superset of the HTML5 work that is being published at the W3C: everything that is in HTML5 is also in the WHATWG HTML spec. Some new experimental features are being added to the WHATWG HTML draft, to continue developing extensions to the language while the W3C work through their milestones for HTML5. In other words, the WHATWG HTML specification is the next generation of the language, while HTML5 is a more limited subset with a narrower scope.
Background worker threads for JavaScript.
Status: Being developed actively.
Note: Web Forms 2.0 has been superseded by HTML5. Web Controls 1.0 has been removed from the list due to bit rot and lack of interest.
There are also a number of specs that are developed at the WHATWG in conjunction with the W3C or the IETF that are primarily published through the W3C and the IETF. A single document containing all of those specs is available at the WHATWG under the name Web Applications 1.0 (warning: large file). For more details about the current set of specs developed at the WHATWG, please see the relevant FAQ entry.