Treebeard is an XSLT IDE that allows you to load an XML file and an XSLT file (from the Web or from the local file system), edit either file, and then perform transformations. Some features include syntax highlighting, a pluggable XSLT transformer, a template browser, SAX transformations (so you can transform large files - 4MB tested), regular expression find, and displaying transformation results in HTML or plain text.
Staroffice/Openoffice to HTML Converter converts a Staroffice/Openoffice.org document to HTML, using xsltproc for the XML conversion and ImageMagick's convert to convert images. It creates a table of contents with links, and handles tables, styles, spans, and many other XML elements from a writer file.
BIE (Business Integration Engine) is an open source integration system that makes it easy for organizations to exchange data with external trading partners regardless of their native applications. It competes in the same space as applications like Microsoft BizTalk except that it is truly cross-platform since it written in Java.
jSimpleX is a visual XSL transformation tool. It uses an XML (source) file and an XSL/XSLT (stylesheet) file to produce a new (output) document. The output can be in a variety of formats, such as XML or HTML. It provides a mechanism for loading, editing, and saving each of the three documents. It also provides a preview tab for XML and HTML (version 3.2) documents. It also supports a commandline mode and an Ant task for automated builds.
RenderX XEP is a commercial-grade application written in Java for dynamic rendering of XML documents. XEP is a pluggable architectural component that takes two open standard inputs, XML data and XSL FO stylesheet, and produces the industry's defacto standards for high-quality rendered electronic documents, Adobe PDF and PostScript. XEP supports many extensions to the XSL FO specification, including SVG graphics and PDF-to-PDF linking.
Syntext Serna is a highly customizable, multi-platform, pure XSL-driven WYSIWYG XML content editor. It looks and works like a conventional word processor, yet it gives you much more flexibility to alter or reuse content while keeping its integrity intact. It lets you collaborate on compound documents that contain embedded data from various sources. Content is viewed as an integrated whole that is intuitively transparent to authors.
PXSL ("pixel") is a convenient shorthand for writing markup-heavy XML documents. It provides XML authors and programmers with a simple, concise syntax that they can use to create XML documents. For more advanced users, it offers customizable shortcuts and sophisticated refactoring tools like functional macros that can markedly reduce the size and complexity of markup-dense XML documents.
Hamilcar is an XML application server inspired by Apache Cocoon for Objective Caml, using the Yaxi library. It is designed around the concept of a pipeline that is traversed during the processing of a request with control structures embedded in XML tags directing the process according to various criteria.