BitTorrent Open Source License
The
BitTorrent Open Source License, is derived from the
Jabber Open Source License, which is an
Open Source Initiative (OSI) approved license. The
BitTorrent client and related pieces of software are licensed under this License which is available here: http://www.bittorrent.com/license.html
An noteworthy aspect of the BitTorrent Open Source License is that it does not grant trademark license. The trademark "BitTorrent" is owned by the company BitTorrent Inc. and is governed by the Trademark Use Guidelines available here: http://www.bittorrent.com/trademark.html
Open Source claims
Although the license is derived from an OSI approved license, this license has not been approved. Furthermore, the approved version of the Jabber license is no longer used or recommended for use by its creators.
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Official license source