W3.org:

W3.org has 287 URLs listed in 163 Dmoz categories.

W3C - The World Wide Web Consortium
The W3C was founded in October 1994 to lead the World Wide Web to its full potential by developing common protocols that promote its evolution and ensure its interoperability.
http://www.w3.org/
Top/Computers/Internet/Organizations/Standards

W3C - The World Wide Web Consortium
The World Wide Web Consortium was created to lead the World Wide Web to its full potential by developing common protocols that promote its evolution and ensure its interoperability.
http://www.w3.org/
Top/Computers/Internet/Policy

W3C Hypertext Transfer Protocol Overview
This is the overview materials related to the W3C HTTP activity, one of the W3C Architecture domain activities. HTTP has been in use by the World Wide Web since 1990 and its use has increased steadily over the years, mainly because it has proven useful a
http://www.w3.org/Protocols/
Top/Computers/Internet/Protocols/HTTP

Hypertext Transfer Protocol - Next Generation Overview
The purpose of the HTTP-NG Project is to tackle current HTTP deficiencies by using sound engineering practices.
http://www.w3.org/Protocols/HTTP-NG/
Top/Computers/Internet/Protocols/HTTP

PEP
W3C working draft of an Extension Mechanism for HTTP.
http://www.w3.org/TR/WD-http-pep
Top/Computers/Internet/Protocols/HTTP

Application-Specific Proxy Servers as HTTP Stream Transducers
Paper from W3C discussing research on an application specific Web proxy.
http://www.w3.org/Conferences/WWW4/Papers/56/
Top/Computers/Internet/Proxying_and_Filtering/Content_Filtering

Platform for Internet Content Selection (PICS)
Technical specification, usage hints, and comments.
http://www.w3.org/PICS/
Top/Computers/Internet/Proxying_and_Filtering/Content_Filtering/PICS_Ratings_System

W3C Semantic Web Activity
By Marja-Riitta Koivunen and Eric Miller. In: Proceedings of the Semantic Web Kick-off Seminar in Finland, November 2001. The authors explain the main Semantic Web principles, key technological layers, they present W3C activity and sample applications. T
http://www.w3.org/2001/12/semweb-fin/w3csw
Top/Computers/Internet/Searching/Directories/Open_Directory_Project/Research_Papers/Semantic_Web

Web Accessibility Initiative
Guidelines and resources from the World Wide Web Consortium (W3C).
http://www.w3.org/WAI/
Top/Computers/Internet/Web_Design_and_Development/Accessibility

Business Benefits of Accessible Web Design
Describes the many business and technical benefits that are realised by applying the Web Content Accessibility Guidelines (WCAG) to Web applications.
http://www.w3.org/WAI/bcase/benefits.html
Top/Computers/Internet/Web_Design_and_Development/Accessibility