 It is free software and cross-platform, currently available for Windows, OS X, and Linux.BitTyrant is a result of research projects at University of Washington and University of Massachusetts Amherst, developed and supported by Professors Tom Anderson, Arvind Krishnamurthy, Arun Venkataramani and students Michael Piatek, Jarret Falkner, and Tomas Isdal.The paper describing how it works, "Do Incentives Build Robustness in BitTorrent?