RefDB is a reference database and bibliography tool for SGML, XML, and LaTeX documents, sort of a Reference Manager or BibTeX for markup languages. It is portable and known to run on Linux, Free/NetBSD, OSX, Solaris, and Windows/Cygwin.
SJSD provides a fully integrated, feature complete and extensible WYSIWYG open source online editor for eZ publish. It is implemented in the form of a FCKeditor plugin and an eZ publish extension and requires no modification to FCKeditor/eZ publish core.