The current version of the (draft) proposal for an XML-based Speech Synthesis Markup Language, as part of the W3C's Speech Interface Framework. This is an industry standard in the making.

The World Wide Web Consortium's browser/editor of record. Includes support for HTML 4.01, XHTML 1.0, XHTML Basic, XHTML 1.1, HTTP 1.1, MathML 2.0, many CSS 2 features and SVG. Includes Annotea, an annotation application based on XPointer and RDF. Inst...

A character based Web browser developed for use on terminals which uses the libwww HTTP/1.1 implementation including a full HTTP/1.1 persistent cache, and history lists.

W3C's description of the Extended Log File Format. Most flexible of the log formats

Sample robot application With portable source code, using the LibWWW library, which can be used to create a link checker application.

No longer maintained, but possibly of historical interest.

Homepage of Synchronized Multimedia Activity at W3C

An archive page from W3C.

A recommendation from the W3C for how to designing user agents to lower barriers to Web accessibility for people with disabilities.

W3C's open source browser/editor for testing and evaluating new standards. Supports XHTML, MathML, SVG and CSS.