MuLTiFlow is a simple replacement for many word-processors with in-built maths and graphics capabilities that are bloat-wares built on archaic frameworks.
However, unlike traditional word-processors MuLTiFlow has XML-nesting capabilities also, so it can also be used as a WYSIWYG XML editor.
The XUL framework also allows it to used both as a browser as well as an editor giving it even more capabiltities than a traditional word-processors, e.g., multimedia and interactions with the web.
An ID/HREF-based micro-format is also being developed inside it, which can indicate ontology fragments by generating graphical views the concepts of the document. For more details see the unpublished paper Simple ID/HREF-based microformat for non-local intra-document links for rendering graphical abstracts