License

Copyright, License and Acknowledgements

With the exception of the ESItool GUI all ESI tools are copyright © by Graham C Shanks and is licensed under the Boost Software License - Version 1.0. You may not use the ESI Tools except in compliance with the License.

The ESItool GUI is based on the source code accompanying the Code Project article Reading an Outlook MSG File in C# by David Ewen. It is licensed under the Code Project Open License v1.02 (www.codeproject.com). The published code contains code (for decompressing RTF) that is published under a different license (it is difficult to work out exactly, but I think that it is actually the GNU Public License (GPL)) - this is unacceptable so this code has been removed (it is not necessary for use in the ESI tools).

The ESI tools use the following:

• Lightweight C# Command Line Parser by Christian Bolterauer. It is licensed under the Code Project Open License v1.02 (www.codeproject.com)
• Windows Forms User Settings in C# by David Veeneman. It is licensed under the Code Project Open License v1.02 (www.codeproject.com)

Background

The Boost software license has the following useful (from my point of view) characteristics:

• It is simple and easy to understand
• It allows use for commercial and non-commercial purposes
• It is certified by the Open Source Initiative
• Derivative works are not required to be distributed in source form (this ruled out "copyleft" licenses such as the GNU Public License (GPL) - see this SISO-Enum thread) - this is important for commercial organisations

Note that although the Boost license does not require that any derivative works in machine-executable form contain the copyright notices, an acknowledgement somewhere in the documentation would be appreciated.

Similarly, if you distribute source code for a derivative works then it is recommended that a prominent notice is included in each changed file stating how, when and where you changed that file (indeed your company/lawyer may insist that you do so, since otherwise you may be assigning the copyright of the modifications to me).

The Boost Software License

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.