The OpenAIS Standards Based Cluster Framework is an OSI Certified implementation of the Service Availability Forum Application Interface Specification (AIS).

The Application Interface Specification is a software API and policies which are used to develop applications that maintain service during faults. Restarting and failover of applications is also provided for those deploying applications which may not be modified.

The OpenAIS software is built to operate on the Corosync Cluster Engine which allows any third party to implement plugin cluster services using the infrastructure provided.

We are always looking for developers or users interested in clustering or participating in our project.

The project is hosted by Fedora Hosted and the The Linux Foundation.

Branch	Version	Description
Wilson	1.1.2 (stable)	Current stable release implementing AMF B.01.02, TMR A.01.01, CKPT B.01.01, CLM B.01.01, EVT B.01.01, LCK B.03.01, MSG B.03.01 (depends on Corosync 1.X.Y)
Whitetank	0.80.6(stable)	Legacy stable release implementing stable versions of CKPT B.01.01, CLM B.01.01, EVT B.01.01, EVS, CPG
Picacho	0.70.1 (stable)	Legacy version implementing AMF A.01.01, CKPT B.01.01, CLM B.01.01, EVT B.01.01

• (Jan 26, 2010) OpenAIS 1.1.2 stable released.
• (Dec 3, 2009) OpenAIS 1.1.1 stable released.
• (Sep 25, 2009) OpenAIS 1.1.0 stable released.
• (Sep 22, 2009) OpenAIS 1.0.2 stable released.
• (Aug 26, 2009) OpenAIS 1.0.1 stable released.
• (Jul 8, 2009) OpenAIS 1.0.0 stable released!!!
• (Jul 1, 2009) OpenAIS 1.0.0.rc1 stable release candidate released.
• (Jun 29, 2009) OpenAIS 0.98 development released.
• (Jun 19, 2009) OpenAIS 0.97 development released.
• (May 5, 2009) OpenAIS 0.96 development released.
• (Apr 25, 2009) OpenAIS 0.96 development released.
• (Mar 24, 2009) OpenAIS 0.94 development released.
• (Mar 2, 2009) Openais 0.93 development released.
• (Feb 17, 2009) OpenAIS 0.92 development released.
• (Feb 10, 2009) OpenAIS 0.80.5 stable released!
• (Jan 27, 2009) OpenAIS 0.80.4 stable released!
• (Oct 7, 2008) OpenAIS 0.91 released!
• (July 24, 2008) Corosync 0.90 and OpenAIS 0.90 released with a fully split tree!
• (July 1, 2007) OpenAIS 0.80.3 Whitetank (stable) released.