Apache Mesos, from Apache Software Foundation Keepalived, keepalived.sourceforge.net Linux Cluster Manager (LCM), linuxcm.sourceforge.net Heartbeat, from Linux-HA oneSIS, from onesis.org Rocks Cluster Distribution, from http://www.rocksclusters.org SCMS.pro, from http://www.scms.pro Ultra Monkey, from http://www.ultramonkey.org