Kubernetes - Kubernetes is an open source orchestration system for Docker containers
xCAT - xCAT is an open-source distributed computing management software used for the deployment and administration of Linux or AIX based clusters.
Apache Mesos - Apache Mesos abstracts resources away from machines, enabling fault-tolerant and elastic distributed systems to easily be built and run effectively.
AutoScalr - AutoScaling service to lower Amazon Web Services costs via machine learning cost-optimizations.
Apache Ambari - Ambari is aimed at making Hadoop management simpler by developing software for provisioning, managing, and monitoring Hadoop clusters.
Ganeti - Ganeti is a cluster management tool built on top of existing virtualization technologies.