Presentations held at Software Freedom Day 2011 at the CWI (Centrum Wiskunde & Informatica: National Research Institute for Mathematics and Computer Science), Science Park Amsterdam, the Netherlands.
Software Freedom Day 2011 playlist
Subjects covered :

• Red programming language (a new REBOL dialect): New programming language which scales from systems programming to network- and application programming
• Topaz: REBOL inspired HTML5 language
• Bitcoin: P2P Virtual Currency
• WebODF: Work with your office files in the cloud, on the desktop and on your mobile
• Fossil: Simple, high-reliability, distributed software configuration management
• OSEPA: Open Source software usage by European Public Administrations
  xxx (Missing URL in posting.)
• NOiV: Netherlands Open in Connection
• OSOR: Open Source Observatory and Repository Europe
  xxx (Missing URL in posting.)
• Sakai: Collaboration and learning - for educators by educators
• Age of Peers: Software re-use; New opportunities for Open Source service suppliers and governments.
  http://www.youtube.com/watch?v=xVPvAYEX6aQ&list=PLCD07C5B11EFB6AB0&index=8
  xxx 2 URLS, 1 probably belongs to another presentation
  http://www.youtube.com/watch?v=BJSLrNyHzRs&list=PLCD07C5B11EFB6AB0&index=9
• Diversia: Decentralized open source metaverse