Sigil is a multi-platform WYSIWYG ebook editor. It is designed to edit books in ePub format.
puddletag is an audio tag editor
This extension makes all html textareas into a very stripped-down version of Vi[m].
brauchbarer editor, fast schon IDE, auf mozilla basis, jetzt open source (kann den src aber nicht finden?!)
LiVES is a Free, Open Source video editor *and* a VJ tool.
wordpress kompatibler, nativer windows blog-editor
a simple editor for cutting out scenes (read: ads) of mpg, e.g. vdr without re-encoding