Vex is an editor for XML documents. The "visual" part comes from the fact that Vex hides the raw XML tags from the user, providing instead a wordprocessor-like interface. Because of this, Vex is best suited for "document-style" XML documents such as XHTML and DocBook rather than "data-style" XML documents.
Vex is released under the GNU Lesser General Public License (LGPL), meaning that it will always be free to use, modify, and re-distribute.
Vex uses standard DTD files to define document types and CSS stylesheets to define document layout.
Vex is based on the Eclipse platform, the same platform used to build the popular Eclipse Java development environment. This foundation provides several advantages.
The Vex editor widget is available as a pure Java, cross-platform component with bindings to Swing and SWT. Developers can re-use this widget, for example as an applet in a web-based application.