The zlib license is a permissive software license which defines the terms under which the zlib software library can be distributed.

The zlib license has been approved by the Free Software Foundation (FSF) as a free software license,[2] and by the Open Source Initiative (OSI) as an open source license.

[3] It is compatible with the GNU General Public License.

[2] The license only has the following points to be accounted for: The license does not require source code to be made available if distributing binary code.

The license terms are as follows: This free and open-source software article is a stub.