Public licenses


MIT

A short and simple permissive license with conditions only requiring preservation of copyright and license notices. Licensed works, modifications, and larger works may be distributed under different terms and without source code. 14

GNU GPLv3

Permissions of this strong copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. 134

Apache 2.0

A permissive license whose main conditions require preservation of copyright and license notices. Contributors provide an express grant of patent rights. Licensed works, modifications, and larger works may be distributed under different terms and without source code. 0

GNU AGPLv3

Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available. 1

BSD 2-Clause

A permissive license that comes in two variants, the BSD 2-Clause and BSD 3-Clause. Both have very minute differences to the MIT license. 0

GNU GPLv2

The GNU GPL is the most widely used free software license and has a strong copyleft requirement. When distributing derived works, the source code of the work must be made available under the same license. There are multiple variants of the GNU GPL, each with different requirements. 1

The Unlicense

A license with no conditions whatsoever which dedicates works to the public domain. Unlicensed works, modifications, and larger works may be distributed under different terms and without source code. 7

Mozilla Public 2.0

Permissions of this weak copyleft license are conditioned on making available source code of licensed files and modifications of those files under the same license (or in certain cases, one of the GNU licenses). Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. However, a larger work using the licensed work may be distributed under different terms and without source code for files added in the larger work. 0

Academic Free v3.0

The Academic Free License is a variant of the Open Software License that does not require that the source code of derivative works be disclosed. It contains explicit copyright and patent grants and reserves trademark rights in the author. 2

CC Attribution 4.0

Permits almost any use subject to providing credit and license notice. Frequently used for media assets and educational materials. The most common license for Open Access scientific publications. Not recommended for software 0

ISC

A permissive license lets people do anything with your code with proper attribution and without warranty. The ISC license is functionally equivalent to the BSD 2-Clause and MIT licenses, removing some language that is no longer necessary. 3

Open Software 3.0

OSL 3.0 is a copyleft license that does not require reciprocal licensing on linked works. It also provides an express grant of patent rights from contributors to users, with a termination clause triggered if a user files a patent infringement lawsuit. 5

Educational Community v2.0

The Educational Community License version 2.0 ("ECL") consists of the Apache 2.0 license, modified to change the scope of the patent grant in section 3 to be specific to the needs of the education communities using this license. 0

BSD 3-clause Clear

A variant of the BSD 3-Clause License that explicitly does not grant any patent rights. 0

BSD 3-Clause

A permissive license similar to the BSD 2-Clause License, but with a 3rd clause that prohibits others from using the name of the copyright holder or its contributors to promote derived products without written consent. 1

zLib

A short permissive license, compatible with GPL. Requires altered source versions to be documented as such. 0