Ncat - Makes it easy to pipe data between hosts. The syntax is similar to cat, but allows tcp streams to be specified in addition to regular files. (C) [GNU/Linux, Unix]
Xfiles - An interactive utility for comparing and merging one file tree with another over a network. (Java)
ZooLib - A library allowing to create native executable for GNU/Linux, Unix, Mac OS, BeOS and Windows with little or no need for platform-specific code. (C++)
DotGNU Project - A Free Software competitor to Microsoft's .NET
SDSC Matrix Project - Offers workflow protocols and workflow language descriptions necessary to build a peer-to- peer infrastructure.
Berkeley Open Infrastructure for Network Computing (BOINC) - A software platform for distributed computing using volunteer computer resources.
BoincView - An addon for BOINC. Under Windows all BOINC Clients in a network can be supervised and partly remote controlled.
Linux Virtual Server - The Linux Virtual Server is a highly scalable and highly available server built on a cluster of real servers, with the load balancer running on the Linux operating system. The architecture of the server cluster is fully transparent to end users, and the users interact as if it were a single high-performance virtual server. It is under GPL licence.
OSF Distributed Computing Environment (DCE) - The OSF Distributed Computing Environment (DCE) is an set of distributed computing technologies under LGPL, promoted and developed by The Open Group.
boincwapstats - Web page of an Open Source PHP script that generates signature images out of BOINC statistics. Easy to set up and also easy to run.
openMosixview cluster-management GUI - openMosixview cluster-management GUI
OpenMosix user area tools (userland tools) for 2.6 - Official (and experimental) user area tools for OpenMosix kernel 2.6.
OpenMosix - OpenMosix is the free fork from MOSIX after this great project closed the user area tools to a closed-source licence. All OpenMosix is under GPL licence.