UniWakka is a PHP based WikiEngine derived from WakkaWiki.
http://uniwakka.sourceforge.net
Core features:
- Formulas can be inserted as LaTex, ASCIIMathML, and plain MathMl
- Chemical structures can be visualized with the Jmol Applet
- WikiFarms installations
- Multi-language support
- RichSiteSummary
- Table of Contents and footnotes
- BibTex import and export
- LaTex export
- LaTex-like citations
- OpenOffice export
- OpenOffice export filter, that lets you use Writer to create content for the wiki and then export it in UniWakka format
- Calendar
- Basic spell-checking support