Links- Javascript RDF/OWL
The preeminent tool for RDF parsing in Javascript must be the Tabulator project at CSAIL. The Tabulator 0.7 demo is fairly impressive and gives one a good sense of what RDF is about, but don't expect it to run quick. The new version 0.8 is over 200KBytes ( tgz-ippped ! ).
A MIT student did some work with a stripped-down version of the RDF parser to good effect.
Mike Bergman's Sweet Tools (Sem Web) listing is an excellent source for Semantic Web tools implemented in Javascript. Once the page loads, select "Javscript" from the language box to the right ( 66 tools by the latest count ).
The RDF Datasource Library from XUL Planet looks interesting, but haven't tried it yet. From the site:
'rdfds' is a library for easier access to RDF datasources and resources. It contains four objects, RDFDataSource, RDFNode, RDFLiteral. and RDFEnumerator.
There is an active project to develop the Mozilla JS Libraries ( JSlib ). For a details about JSLib.
There are about half-a-dozen plugins for Firefox and other browsers ( including a speedier Tabulator plugin for Opera ), but this introduces browser configuration dependencies ... perhaps a necessary evil in the short run and maybe even in the long run.