Open Source XML Software

eXist-db is a native XML database featuring efficient, index-based XQuery processing, extensions for keyword search, XUpdate support, XSLT support, XForms support, REST and tight integration with existing XML development tools. Moved to Github - https://www.github.com/exist-db/exist

An XQuery and XPath 2.0 library, written in C++ and built on top of Xerces-C.

This project is now abandoned in favour of MorganaXProc-III which implements XProc 3.0: https://sourceforge.net/projects/morganaxproc-iiise/ MorganaXProc is a full implementation of XProc: An XML Pipeline Language (W3C Recommendation 11 May 2010) written in Java, supporting all required and optional steps, the steps proposed on EXProc.org and also the document templating steps "p:in-scope-names" and "p:template". XPath 2.0 or XPath 3.0 is used as expression language. XSLT and XQuery are supported out of the box, while a flexible connector mechanism also allows to employ your favorite XSLT and XQuery processors. The current version is 1.0.x. It is very close to the recommendation with all related tests of the XProc Test Suite passed.

XML-Parse library is a lightweight set of functions for parsing, checking, and creating xml files. It can support stream-oriented, SAX or DOM parsing styles, and includes an optional xsd schema validator and graphical schema generator.

CookXml is a powerful dynamic XML data binding tool for Java. It is designed to be easily extensible and yet simple to use, with advanced exception handling. CookSwing and CookSwt are tag libraries for CookXml to do XML->GUI (XUL) for Swing and SWT.

IXML (short for "Interface XML") is a Java framework to create Swing user interfaces using XML files that describe the UI.

Everything is XML - Everything is possible - Keep it simple

Lightweight XML processor; XML-POJO mapping via Java5 annotations or DTD; Preprocessing of XML documents using expression language; Binary XML; RMI friendly XML; JSON format support; XML marshall/unmarshall; HTML as XML parser; Swing XML Viewer

A collection of REBOL mezzanine functions, both simple and advanced, that may have varied and disparate versions in the wild, and will benefit from being unified.

Toolset for the TMPL (Template Matching Processor Language). Compiler and runtime for creating/ evaluating templates on XML data streams. Can be integrated easily in Java projects.

What is a domain-specific language intended for constructing web services on top of ordinary web pages, or otherwise automate web-related tasks. Using a powerful pattern matching sublanguage, What strives to be for XML/HTML what Perl is for text analysis

Water: a fast, secure, dynamic OO language and database. Water is an all-purpose language (and meta-language) that runs Web applications in the browser or server-side. Water is compatible with .NET, Java, and C on Windows, Linux and Mac OS X system.

WebPath is an experimental implementation of XPath 2.0 in Python, initially developed during Yahoo! Hack Day. It uses a novel parsing technique called Top Down Operator Precedence. Seeking developers to improve implementation and conformance.

An open-source Java-based XCCDF reference implementation.

XIPL/XASM is a basic environment to build high-level Image Processing operations using a XML-based language. The idea is to compile the high-level XIPL language into a low-level one, XASM (XML-based too), using XSLT technology.

A LISP-like XML glue language with an XML syntax. Ideal for pipelined XML aggregation, transformations and filtering with accessors to a content repository. Embeddable Java implementation includes XSLT engine XT, servlet, command line and applet.

An XQuery Update Facility 1.0 Parser for Java

VxmlSurfer is a modular, multi-platform, extensible VoiceXML 2.0 interpreter, geared to Web browsing as opposed to telephony. VxmlSurfer is currently used as a user interface for the HearSay non-visual Web browser.

"xmlsh" is derived from the design and goals the unix shell and core commands but with XML expressions and documents added as core features to the shell. xmlsh can be used as a drop-in replacement for scripting xml transformations instead of sh.