RDF Site Summary 1.0 Modules: Presence RDF Site Summary 1.0 Modules: Presence

SourceID.org - Liberty Alliance Open Source single sign on

nurl

"Nurl" stands for "Not a URL". http://nurl.org serves as a root for URIs used in the semantic web to denote things other than web resources - things such as physical or mathematical objects. Some of these URIs may resolve to web pages as well (usually documentation), but this does not affect their primary intended denotation.

RSS Tutorial for Content Publishers and Webmasters (Mark Nottingham)

I think I missed this before - it's very good

MetaMap an SVG map of (meta)data standards in the style of the London Underground map.
"The MetaMap is a pedagogical graphic which takes the form of a subway map. Its aim is to help the information science community to understand metadata standards, sets, and initiatives of interest in this area."

(via Catalogablog)

funnily enough, I did leave some archives at the end of the Victoria line...

The Semantic Blog (Jon Udell) using XPath to query RSS feeds, bizarrely sidestepping RDF

Liberty Alliance
seeAlso: Liberty Alliance Releases Draft Of Phase 2 Identity Spec (Internet Week)

RDFMap (RDF Mapping Language)
seeAlso: http://www.mapbureau.com/rdfgeom2d1.0/index.html (RDF 2D Geometry Language)

Airhook "Reliable, efficient transmission control for networks that suck."

(Used in Khashmir, which is a Distributed Hash Table (DHT) based on Kademila and written in Python - an AaronSw project).

BlogChalking "Collaboratively mapping weblogs for smarter blogsearching."

Easy bit of extra XHTML-friendly metadata with cute icon.

seeAlso: Blogchalk Search Engine

Topic Map Explorations (Ontopia) - post-introductory material, including RDF/TM docs

Visual Languages

Kademlia "...is a novel routing algorithm for peer-to-peer networks based on the XOR metric."

Annotation Engine (Harvard Law, Berkman Center for Internet and Society) "...a set of Perl scripts and a database that allows readers anywhere to add comments to web pages anywhere else."
seeAlso: the W3C's Annotea

RSS Feeds from O'Reilly
(via dajobe)

What is the business value of the Semantic web? (xSP Strategy) interview with Paul Cowles, VP, Semaview.
(via dajobe)

PlaceTime.com - URIs for Places and Times (Ian Davis) namespace and service - wow!

Easy News Topics designed to enable easy topic sharing. It's written for RSS 2.0, which isn't exactly semweb-friendly, but does appear to be thought out well enough to be easily mappable.
seeAlso: comments by John McDowall, Marc Canter

A Semantic Pet Store (The WebAI Wiki) - doing the classic web app with DAML-S/WSDL.