Opensource is a large topic to discuss but Zentitle has taken great pains to ensure that it's use of Opensource is carefully and selectively used within our products, or free components and utilities.
In our original Zentitle Licensing products marked versions 4-7 we don't use any open source in our core components (services, daemon and DLLs/libraries) and there is usage in external utilities that is marked - such as our license manager source code etc
In our later products for Analytics and Licensing after Q1 2013, we use a range of open source components as below.
If you want to be sure what you are using or wish to avoid any Opensource please contact us for further confirmations.
So what is Zentitle using?
Apache Portable Runtime (APR) - An apache license
Copyright (c) 2000-2018 The Apache Software Foundation.
This product includes software developed at
The Apache Software Foundation (http://www.apache.org/).
Portions of this software were developed at the National Center
for Supercomputing Applications (NCSA) at the University of
Illinois at Urbana-Champaign.
This software contains code derived from the RSA Data Security
Inc. MD5 Message-Digest Algorithm.
This software contains code derived from UNIX V7, Copyright(C)
Caldera International Inc
libcurl - A MIT variation.
COPYRIGHT AND PERMISSION NOTICE
Copyright (c) 1996 - 2018, Daniel Stenberg, <daniel@haxx.se>, and many
contributors, see the THANKS file.
All rights reserved.
Permission to use, copy, modify, and distribute this software for any purpose
with or without fee is hereby granted, provided that the above copyright
notice and this permission notice appear in all copies.
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 AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN
NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of a copyright holder shall not
be used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization of the copyright holder.
libressl - a BSD license. The OpenSSL toolkit portion of libressl is NOT used in our software.
Copyright (c) the LibreSSL Project
LibReSSL files are retained under the copyright of the authors. New
additions are ISC licensed as per OpenBSD's normal licensing policy,
or are placed in the public domain.
libxml2 - A MIT license.
Copyright (C) 1998-2012 Daniel Veillard. All Rights Reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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 AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
cJSON - A MIT license.
Copyright (C) 2009-2017 Dave Gamble and cJSON contributors.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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 AND NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
documentation for any purpose, without fee, and without a written agreement
is hereby granted, provided that the above copyright notice and this
paragraph and the following two paragraphs appear in all copies.
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING
LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO
PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
We only use Open source that uses licenses under BSD, Apache and MIT. These three are very flexible and allow you to do anything you want with the code so long as you reproduce a notice.
- The BSD only requires that a copyright notice is included with all source code and binary releases. It also states that BSD (Berkeley Software Distribution) is not responsible for anything to do with the code. That's it which is why it can be the basis of OSX. BSD licensing information is scattered through the OSX headers, SDKs, etc.
- An Apache license says that if a NOTICE file is included with the source, you have to make that file available in certain circumstances. The NOTICEs file can never modify the license, it can only display information. The only display condition that affects us is that it should be included in our documentation. Also, if you modify any code you must prominently state that fact. We haven't. We use it as a library.
- There are several MIT licenses but mostly they say that the producer of the original code is blameless for any faults and that a copyright notification needs to go into sourcecode.
Wikipedia has good entries on all these licenses.