UDT is a reliable UDP based application level data transport protocol for distributed data intensive applications over wide area high-speed networks. UDT uses UDP to transfer bulk data with its own reliability control and congestion control mechanisms. The new protocol can transfer data at a much higher speed than TCP does. UDT also supports very effective firewall traversing with built-in technologies such as hole punching and rendezvous connection. The UDT protocol has been used in many commercial projects, including mission-critical defense and financial projects.
UDT is open source software available under the BSD license.
Sector/Sphere supports distributed data storage, distribution, and processing over large clusters of commodity computers. Sector is a high performance, scalable, and secure distributed file system. Sphere is a high performance parallel data processing engine that can process Sector data files with very simple programming interfaces. Sector/Sphere can be broadly compared to Google's GFS/MapReduce stack, but differs in several key design choices and provides better performance.
Sector is open source software available under the BSD license.