Transfolio, transform your folders. Full applications in different contexts (Ant, Cocoon, Mozilla, OOo...), using a transformations pack (XSL), to import and export documents in various formats (HTML, XMLs, but also OOo or jpg...).
A complete how to guide on setting up and using OpenCms, the open source content management system.
Covering installation on windows and linux, static export, setting up export syncronisation, WYSIWYG editor use and tips and more.
BibTeXlipse is an Eclipse plugin for managing and analyse bibliography databases. Mainly for BibTeX databases, but will import and export many other bibliographic formats.
It's currently in planning phase.