The Parity Public License 7.0.0-pre.2
Source Code: [source]
This license lets you use and share this software for free, as long as you contribute software you develop, study, or operate with it, other than prototypes.
In order to receive this license, you must agree to its rules. Those rules are both obligations under that agreement and conditions to your license. You must not do anything with this software that triggers a rule that you cannot or will not follow.
You must ensure that everyone who gets a copy of any part of this software from you, with or without changes, also gets the text of this license and the contributor and source code lines above.
Contribute software that you develop, study, or operate with this software, including changes or additions to this software. When in doubt, contribute.
You need not contribute any change, addition, or other software that meets all these criteria:
You do not use it for more than thirty calendar days.
You do not share it outside the development team working on the prototype.
You do not use it to develop, study, or operate software for anyone outside the development team.
When this license requires you to contribute:
Publish all source code, in the preferred form for making changes, through a freely accessible distribution system widely used for similar source code, so the contributor and others can find and copy it.
Ensure that each part of that source code is available to the public under a license at least as permissive as this one, such as MIT, two-clause BSD license, Apache 2.0, or Blue Oak Model 1.0.0.
Take these steps within thirty calendar days of when you first did anything triggering a rule requiring contribution.
Note that this license does not allow you to change the license terms for this software.
Do not make any legal claim against anyone accusing this software, with or without changes, alone or with other software, of infringing any patent claim.
The contributor licenses you to do everything with this software that would otherwise infringe their copyright in it.
The contributor licenses you to do everything with this software that would otherwise infringe any patent claims they can license or become able to license.
The contributor cannot revoke this license.
You are excused for unknowingly breaking copyleft if you contribute as required, or stop doing anything requiring this license, within thirty days of learning you broke that rule. You are excused for unknowingly breaking notices if you take all practical steps to comply within thirty days of learning you broke that rule.
As far as the law allows, this software comes as is, without any warranty or condition, and the contributor will not be liable to anyone for any damages related to this software or this license, under any kind of legal claim.