PRoPHET is a Probabilistic Routing Protocol using a History of Encounters and Transitivity. PRoPHET is used for intermittently connected networks, where there is no guarantee that a fully connected path between source and destination exists at any time, rendering traditional routing protocols unable to
deliver messages between hosts. These networks are examples of networks where the Delay-Tolerant Network architecture is  applicable. The protocol specification was written by A. Lindgren and A. Doria. The PRoPHET draft is available here .

Severals demo PRoPHET implementations were done before on the Luleå University of Technology in the previous years. One of them was presented using a "Lego Mindstorms" robots as mobile nodes.

The lastest  PRoPHET implementation uses the DTN reference implementation (version 2.2.0) software. It is written in C++ using the well known Trolltech QT 4.1 framework. The code itself is now totally platform independable. Currently we are using three different platforms:

• Ubuntu Linux 6.0 (running on Compaq Tablets coputers)
  
• Windows XP (running on laptops)
• Familiar Distribution Of Embedded Linux (running on ARM architecture - using Stargates)