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The Apache Cassandra Project

The Apache Cassandra database is the right choice when you need scalability and high availability without compromising performance. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure make it the perfect platform for mission-critical data. http://cassandra.apache.org/
http://bradfitz.com/social-graph-problem/ I've been thinking a lot about the social graph for awhile now: aggregating the graph, decentralization, social network portability, etc.

Brad's Thoughts on the Social Graph

RDFa - Capture From Websites From Wikipedia : RDFa (or Resource Description Framework – in – attributes) is a W3C Recommendation that adds a set of attribute level extensions to XHTML for embedding rich metadata within Web documents. http://www.franz.com/agraph/gruff/grufflab.lhtml

Gruff Lab

http://topicmap.com/ I have been working my way through the "identity crisis" on the web, trying to get my head around how I can get a system to work with both RDF and TMs.

topicmap.com | What's happening in the Topic Maps world?

Welcome to the HyperGraph homepage. HyperGraph is an open source project which provides java code to work with hyperbolic geometry and especially with hyperbolic trees. http://hypergraph.sourceforge.net/

Hypergraph - Hyperbolic graphs and trees : Home