Sector/Sphere is open source software under the Apache 2.0 license. The software is written in C++. The server side supports Linux only. The client side supports Linux and Windows, with OSX being ported to.
Sector/Sphere is available for download from the Sector SourceForge project web site. The release package contains source code, Sector/Sphere API, programming examples, Sector file system access tools, and detailed documentation.
Sector/Sphere uses a high performance network protocol called UDT for messaging and data transfer. UDT is open source software under the BSD license. For more information about UDT, please visit http://udt.sourceforge.net.
Malstone is a stylized benchmark for data intensive computing. Malstone is developed by the Open Cloud Consortium to benchmark various cloud computing systems. The Malstone code is open source and can be downloaded from http://code.google.com/p/malgen.