Parsoid can convert between wikitext and HTML in real time
Description
The Parsoid team is developing a wiki runtime which can translate back and forth between MediaWiki's wikitext syntax and an equivalent HTML / RDFa document model with better support for automated processing and visual editing. Its main use currently is the VisualEditor project. A major (and not easy) requirement is to avoid 'dirty diffs' or information loss in the conversion.
