XMLschema.com
An on-line service that streamlines the exchange of valid business grammars. Includes an interface that allows validation and conversion processing of schemas.

WDVL XML Software Guide
A guide to the latest tools in XML development. With a description of each tool, ranging from XML editors, parsers, database support, browsers and APIs. Part of the Web Developers Virtual Library (WDVL).

xmlsoftware.com: The XML Software Site
James Tauber maintains an excellent collection of available XML software products sorted by category. Very up-to-date and with useful descriptions.

Apache XML Project
XML parsers, XSL-T processors and XML processing frameworks.

XML Server Pages
Conversion Toolkit transforms Powerbuilder datawindow in Java/XML/XSL/Javascript objects for any server/browser.

Microsoft's Collection
List of non-Microsoft XML tools maintained at the Microsoft Developer Network (MSDN) site.

XML.com: Buyer's Guide
The web magazine XML.COM offers this up-to-date list of XML software products with detailed reviews.

GSLgen: General-purpose Schema Language generator
By iMatix Corp. Universal code generator engine, can generate any programming language, from templates driven by XML data; templates can act as full XML processing applications; code generation engine can be used in other applications. Open source.

Breeze Factor
Software to create JavaBeans directly from XML.

Free XML Tools and Software
Categorized listing of software available for download. Categories include control information development (creating, modifying and documenting DTDs and XSL style sheets), conversion, storage and management, editing and composition, delivery, parsers and engines.

Oracle XML Developer's Kit
Parsers, schema processors, and class generators for Java, C, C++ and PL/SQL.

STG Validator
On-line checking of XML specified by URL, local file, or cut and paste.

Webreference.com: XML tools
A collection of GNU software tools for processing XML and its derivates, such as RSS.

Public SGML/XML software
The software listing of The XML Cover Pages.

Fancy XML Tree Viewer
Shows the node structure of an XML document in the form of colored HTML tables and bulletted lists. This model is based on the XPath proposed recommendation.

LTG Software: LT XML
An integrated set of XML tools and a developers' tool-kit, including a C-based API. [UNIX, WIN32]

Metabase
Database independent access and management via XML for PHP. Free registration required to download.

easyXML Bean Suite
the functionality to develop Java applications for processing XML documents. It can also be used for adding XML support to existing applications. Beans in Suite: XMLHolder, XMLElement, XMLAttribute, FileGenerator, XML2HTML, HTML2XML, RecursionResolver, NameSpace, XLinkArc, XLinkExtended, XLinkLocator, XLinkSample.

HaXml
Utilities to use Haskell and XML together. Site provides whitepapers, downloads (current and older versions), bug report and contact information.

XMLCities
Developer of advanced, high-quality XML content creation, conversion and publishing solutions; mass creation of XML content in production environments using advanced XML auto-tagging by intuitive select-n-click manual tagging based on any DTD.

XML Query Engine
Full-text search engine component for XML.

fase4
fase4.com develops solutions using XML technologies. Download packages and classes written in PHP and Java to use XML Remote Procedure Calls (RPCs), SOAP, XPath and RDF/RSS resources.

DeltaXML: XML file comparison
Tools for intelligent comparison of XML files. The differences are represented in XML. Provides a Java API for embedding in Java applications.

dArcBlue
An XML centric web application platform, which runs on top of a standard technical infrastructure and supports common technology standards. In dArcBlue, XML is used as a data format, an interface standard, and a declaration language. Product, service and FAQs provided.

TENdotZero
Specializes in XML software. Developers of various applications including XML Author, a word processor and XML Data Connect, a multiple concurrent Data Base query tool.

XML Canonicalizer
Generates canonical XML documents based on W3C recommendation Canonical XML version 1.0.

ExamXML
Visual XML files comparison tool with color highlighting differences.

XMLRAD
Commercial solution for client/server application development based on industry and internet standards: SQL, XML, XSL, HTML, SOAP, WSDL.

TeXML Processor
An XML vocabulary for TeX. The processor transforms TeXML markup into TeX markup, escaping special and out-of-encoding characters. Intended audience is developers who automatically generate TeX files.

The New World Web Development Portal
The portal provides web development resources in various categories, including XML.

XML Schema Based GUI Rendering Engine
The rendering engine generates presentation GUIs "on-the-fly", using an XML schema based representation of the business model.

XML Schema to Programming Language Binding Tool
Generates C++, C#, Java or Visual Basic 6 components from XML schema types (XSD, XDR) and DTDs.

RTF to XML Convertor
Converts RTF documents to either XML documents or XSL/XML document sets that are compliant with the XML FO specification. It works as a standalone application or as part of an integrated solution.

TIBCO TurboXML
Integrated Development Environment (IDE) for developing and managing XML assets. With facilities for creating, validating, converting, and managing XML schemas, XML files and DTDs.