Villanova University's Falvey Memorial Library has released the alpha version of VuDL, which is under a GPL open source license.
Here's an excerpt from the press release:
The simple-to-use Digital Library Administration application is powered by all open source technologies, and provides a METS metadata editor, service image generation tools, XML database repository, and a built-in OAI server.
The core of VuDL's application is powered by Orbeon Forms, a powerful XML/XForms processor. eXist (a native XML database) and the server's file system combine to support the data and image repository.
VuDL's public interface is powered by VuFind (http://vufind.org), an Open Source discovery layer developed and managed by Villanova University. VuFind is currently in use in academic and research libraries in 12 countries, including the National Library of Australia and the London School of Economics.
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