From the drupal.org post, Semantic Search - Faceted Search and Semantic Web:

Updated Sept 19 2008:

From the article "Using Prolog as the fundament for applications on the semantic web":

March 28 2009: added links, few edits. revisiting subject in general

There are some Javascript oldies but goodies to be found on the Web.

There was an active Javascript inference engine at CNLP ( Syracuse Univeristy ) at some point, but it may be moribund. From the site:

From the site:

The Semantic Web Client Library represents the complete Semantic Web as a single RDF graph. The library enables applications to query this global graph using SPARQL- and find(SPO) queries. To answer queries, the library dynamically retrieves information from the Semantic Web by dereferencing HTTP URIs and by following rdfs:seeAlso links. The library is written in Java and is based on the Jena framework.

An interesting collection of papers accepted.

From the site:

SemWebCentral is an Open Source development web site for the Semantic Web. It was established in January, 2004 to support the Semantic Web community by providing a free, centralized place for Open Source developers to manage Semantic Web software and content development. Another purpose is to provide resources for developers or other interested parties to learn about the Semantic Web and how to begin developing Semantic Web content and software.

Tools for Semantic Web Rules and Ontologies, including Translation, Inferencing, Analysis, and Authoring.

From the site:

The Semantic Web Education and Outreach (SWEO) Interest Group has been established to develop strategies and materials to increase awareness among the Web community of the need and benefit for the Semantic Web, and educate the Web community regarding related solutions and technologies. 

Updated Oct 3 2008: link

The first thing I saw was, "To help in the search for Steve Fossett, please click here ... ". It is not a joke - it is serious.

The next thing was, "Complete simple tasks that people do better than computers. And, get paid for it. Learn more." Yes indeed.

From the site's answer to "What is Mechanical Turk":

From the site:

DBpedia is a community effort to extract structured information from Wikipedia and to make this information available on the Web. DBpedia allows you to ask sophisticated queries against Wikipedia and to link other datasets on the Web to Wikipedia data.

Their demo page for the subject Semantic Web, using DBpedia's Linked Data Interface format.

The Learning Agent Center at George Mason University.

Excellent text book on reasoning and agents from Gheorghe Tecuci et al, Building Intelligent Agents. ( Academic Press, 1998 ).

Freebase is a very powerful environment for data storage and classification. From their site:

Freebase is a uniquely structured database that you can easily search, add to and edit; you can also use the data in it to power your own projects. It’s a data commons in the way that a public square is a land commons—available to anyone to use.

During a speech to a Linux audience on the necessity of "standardizing" Linux, Novell President and CEO Ron Hovsepian continues the thought expressed above by saying, 

"We need the software vendors to have their footprints on Linux. On Windows, application availability is their biggest advantage."

He seems to be talking about the Microsoft model of standardization, that is by being the one and only application.

A good source of links for the general subject of AI, including 2 links for 'Qualitative Physics' !

A very concise and straightforward introduction to XML, RDF and the Semantic Web.