IBM Public License
The IBM Public License (IPL) is a free software / open-source software license written and sometimes used by IBM. It is approved by the Free Software Foundation (FSF) and described as an "open-source license" by the Open Source Initiative.
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The IPL differs from the GNU General Public License (GPL), in that it places the liability on the publisher or distributor of the licensed software code. According to IBM, this is to facilitate commercial use of open-source software, without placing the contributor at a risk of liability. Proponents of the IPL note a clearer definition of responsibility for software code than that of the GPL.
The IPL is incompatible with the GPL because it contains restrictions not included in the GPL. According to the FSF, "This is a free software license. Unfortunately, it has a choice of law clause which makes it incompatible with the GNU GPL."
The IPL differs from the GPL in the handling of patents, as IPL terminates the license upon patent disputes.
- The DFSG and Software Licenses - Debian Wiki
- "Various Licenses and Comments about Them - GNU Project - Free Software Foundation". 2016-07-08. Retrieved 2016-07-29.