W3.org:

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

XQuery 1.0 and XPath 2.0 Data Model
This document defines the W3C XQuery 1.0 and XPath 2.0 Data Model, which is the data model of at least XSLT and XQuery, and any other specifications that reference it. This data model is based on the data models of XPath and XML Query Data Model and repl
http://www.w3.org/TR/xpath-datamodel/
Top/Computers/Data_Formats/Markup_Languages/XML/Reference

XQuery 1.0 and XPath 2.0 Functions and Operators Version 1.0
Defines basic operators and functions on the datatypes defined in XML Schema Part 2: Datatypes for use in XQuery, XPath, and other related XML standards. (W3C Working Draft 27 August 2001)
http://www.w3.org/TR/xquery-operators/
Top/Computers/Data_Formats/Markup_Languages/XML/Reference/Working_Drafts

XML Protocol (XMLP) Requirements
An envelope to encapsulate XML data for transfer in an interoperable manner that allows for distributed extensibility, evolvability, as well as intermediaries like proxies, caches, and gateways. (W3C Working Draft 19 March 2001)
http://www.w3.org/TR/xmlp-reqs/
Top/Computers/Data_Formats/Markup_Languages/XML/Reference/Working_Drafts

XML Accessibility Guidelines
This document explains how to design accessible applications using XML. (W3C Working Draft 29 August 2001)
http://www.w3.org/TR/xmlgl
Top/Computers/Data_Formats/Markup_Languages/XML/Reference/Working_Drafts

XML Protocol Abstract Model
This specification defines an Abstract Model of XML Protocol. An abstract model is one way to establish a consistent set of concepts. and is a tool for the description of complex behaviour. (W3C Working Draft 9 July 2001)
http://www.w3.org/TR/xmlp-am/
Top/Computers/Data_Formats/Markup_Languages/XML/Reference/Working_Drafts

XML Inclusions (XInclude) Version 1.0
Specifies a processing model and syntax for general purpose inclusion. Inclusion is accomplished by merging a number of XML Infosets into a single composite Infoset. Specification of the XML documents (infosets) to be merged and control over the merging
http://www.w3.org/TR/xinclude/
Top/Computers/Data_Formats/Markup_Languages/XML/Reference/Working_Drafts

XSLT Requirements Version 2.0
This document describes the requirements for the XSLT 2.0 specification. (W3C Working Draft 14 February 2001)
http://www.w3.org/TR/xslt20req
Top/Computers/Data_Formats/Markup_Languages/XML/Reference/Working_Drafts

XML Blueberry Requirements
Design principles and requirements for the Blueberry Revision of the XML 1.0 Recommendation, solely to address character set issues. (W3C Working Draft 21 September 2001)
http://www.w3.org/TR/xml-blueberry-req
Top/Computers/Data_Formats/Markup_Languages/XML/Reference/Working_Drafts

XML Encryption Syntax and Processing
This document specifies a process for encrypting data and representing the result in XML. The data may be arbitrary data (including an XML document), an XML element, or XML element content. The result of encrypting data is an XML Encryption element which
http://www.w3.org/TR/xmlenc-core/
Top/Computers/Data_Formats/Markup_Languages/XML/Reference/Working_Drafts

XML Encryption Requirements
Design principles, scope and requirements of XML Encryption, including the encryption syntax, data model, format, cryptographic processing, and external requirements and coordination. (W3C Working Draft 18 October 2001)
http://www.w3.org/TR/xml-encryption-req
Top/Computers/Data_Formats/Markup_Languages/XML/Reference/Working_Drafts