Yadis 1.0 The Identity and Accountability Foundation for Web 2.0 — Fully under control of the user — URL-based — Simple — Multi-protocol — Multi-vendor — Originator: NetMesh Inc. Several open-source and corporate implementations, most platforms Single Sign-On, attribute exchange, authenticated messaging, social functionality... NetMesh InfoGrid, mylid.net... Originator: Six Apart Inc. Several open