Systems That Support Virtual Synchrony
Virtual synchrony has been supported by the "Isis Toolkit" (a new version, Isis^2, is under development at Cornell and should be available in fall of 2010; it aims at the massive data centers that support cloud computing), the "Horus system", the Transis system, the Totem system, an IBM system called Phoenix, a distributed security key management system called Rampart, the "Ensemble system", the Quicksilver system, "The OpenAIS project", its derivative the Corosync Cluster Engine and a number of products (including the IBM and Microsoft ones mentioned earlier). At the time of this writing, virtual synchrony toolkits that programmers can use to implement new virtually synchronous applications include the Spread Toolkit, jGroups, the C-Ensemble system, Appia, Quicksilver, and the Corosync Cluster Engine.
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