Xtm
Nexist v.0.3
Nexist is being developed based on a few hypotheses regarding Topic Maps (XTM) as an interface to a collaborative knowledge repository system.
XSiteable v.0.88
xSiteable is a fully relational website compiler written entirely in XSLT, using topic maps (using XTM directly) as the backbone information technology, bundled with the fast Sablotron XSLT parser, a GUI admin tool and other nifty features.
HyperSpider v.32
HyperSpider (Java app) collects the link structure of a website.