MonPaaS is a monitoring service for OpenStack based on Nagios
Distributed Computing with JavaScript
XML Data Stream Broker/Replicator
DisChoco: Distributed Constraint Reasoning Solver
shared memory allocator
Networking framework for Java applications
Cross-platform grid computing solution
C.H.A.O.S. is a Linux distro made for clusters.
TuCSoN tuple-based coordination middleware
Distribute jobs to compute nodes on dynamic clusters