Open Source, Open Standards and Serious Games

1. 3D World

1.1. OpenSim

1.1.1. OpenSim-Edu

2. Somewhat related Open Standards

2.1. APML (Attention Profiling Mark-up Language

2.2. Extensible Messaging and Presence Protocol (XMPP)

2.3. SyncML (Synchronization Markup Language)

2.4. OpenID

2.5. "Semantic Web"

2.5.1. Resource Description Framework (RDF)

2.5.2. Web Ontology Language (OWL)

2.5.3. Simple Knowledge Organization System (SKOS)