The initial release of VRPN (The Virtual Reality Peripheral Network) was placed into the public domain on 5/4/1998 by the copyright holder Russell M. Taylor II at the University of North Carolina at Chapel Hill.

To protect all VRPN contributors from liability without restricting the use of VRPN, as of July 22, 2010, future versions of VRPN (versions 7.27 and higher) are being released under the Boost Software License 1.0, which is as follows:

Boost Software License 1.0 (BSL1.0)
 
Permission is hereby granted, free of charge, to any person or organization obtaining a copy of the software and accompanying documentation covered by this license (the "Software") to use, reproduce, display, distribute, execute, and transmit the Software, and to prepare derivative works of the Software, and to permit third-parties to whom the Software is furnished to do so, all subject to the following:

The copyright notices in the Software and this entire statement, including the above license grant, this restriction and the following disclaimer, must be included in all copies of the Software, in whole or in part, and all derivative works of the Software, unless such copies or derivative works are solely in the form of machine-executable object code generated by a source language processor.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Additional requests follow:

1. Please acknowledge this library in any publication, written, videotaped,
	or otherwise produced, that results from making programs using it.
	The acknowledgement will credit

	CISMM Project
	University of North Carolina at Chapel Hill,
	Supported by the NIH/NCRR and the NIH/NIBIB.

2. Please furnish us a copy of any publication, including videotape,
	that you produce and disseminate outside your group using our
	program.  These should be addressed to Professor R.M. Taylor
	at [email protected].

3. Please send us derived classes and drivers for new devices that you
	create for the library.  We will attempt to include them in
	future releases of the library for you and others to use.  This
	is the fastest way to get a working system for everyone.