MonPaaS is a monitoring service for OpenStack based on Nagios
XML Data Stream Broker/Replicator
Distributed Computing with JavaScript
Networking framework for Java applications
C.H.A.O.S. is a Linux distro made for clusters.
TuCSoN tuple-based coordination middleware
TaskManager manages calculation jobs in a computer cluster environment
Distribute jobs to compute nodes on dynamic clusters
Dynamically manage Amazon EC2 clusters
Batch system monitoring and archiving
Actor based programming using WCF and async-await.
Kepler is a monitoring system for HPC clusters