UNiform Interface to COmputing and data REsources
High-speed, 3D-friendly, TightVNC-compatible remote desktop software
OpenDDS is open source publish/subscribe middleware
Distributed and Parallel Computing with/for Python.
The open source grid computing solution
Networking framework for Java applications
Portable Ubuntu Linux for Scientific Computing
A simple script for distributed computing through PHP:
High performance distributed in-memory key/value store