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Microsoft Open Source Release?

[ Thanks to Doug Loss
for this link. ]

New Microsoft Zone Integration Server license seems to satisfy
all the requirements.

“The Zone integration server is a middleware developed by
Microsoft and it’s partners that provides the mechanisms and
services that allow third party applications to exchange XML data.
These services include message routing based on the
publish/subscribe and request/response paradigm, security and
message persistence to account for communication failures. This
software is based on the V0.9.2 SIF specification and has been
successfully tested and used in three pilot sites.”

“The Zone Integration Server is not a supported Microsoft
product and as such has not been put through the usual procedures
of a Microsoft product release. It was developed for the purpose of
validating the SIF specification and helping vendors implement
pilot sites. It is available from this web site in source format
and we encourage vendors to download it, productize it, bundle it
with their main product offering, and/or offer deployment and
support services around it provided they abide by the attached
license agreement.”

After Scrolling to the bottom of the linked page, click on
Download Now. This will bring up the Zone Integration Server EULA.
From the EULA:

“1.License Grant. Subject to the restrictions in Section 2
below, your use of the Program is as follows:”

“a.Use and Copy of Source Code. You may copy and distribute the
Program source code exactly as you receive it, in any medium,
provided that you (i) conspicuously and appropriately publish on
each copy an appropriate copyright notice, if applicable, and
disclaimer of warranty; (ii) keep intact all the notices that refer
to this License and to the absence of any warranty; and (iii) give
any other recipients of the Program a copy of this License along
with the Program. All recipients must receive the same rights you
have. You may not impose any further restrictions on the
recipients’ exercise of the rights granted herein.”

“b.Modification. You may modify the Program or create derivative
works and copy and distribute such modifications or derivative
works, provided that you also: (i) cause the modified files to
carry prominent notices stating that you changed the files and the
date of any change so that the recipients know they are not
receiving the original Program; (ii) cause any work that you
distribute or publish, that in whole or in part contains or is
derived from the Program or any part thereof, to be licensed as a
whole to all third parties under the terms of this License; and
(iii) provide notice to users under the same terms of distribution
as set forth in Sections 1(a)(i), 1(a)(ii) and 1(a)(iii)
above.”

Here is the link to the Zone
Integration Server
page. To view the EULA click on the
“Download Now” button.