zeromq

ØMQ Free Software Licenses

The ØMQ library is licensed under the GNU Lesser General Public License. All add-ons and examples are published under the GNU General Public License.

• You get the full source code of ØMQ. You can examine the code, modify it, and share your modified code under the terms of the LGPL.

• Static linking exception. The copyright holders give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you must extend this exception to your version of the library.

ØMQ for Commercial Applications

• ØMQ is safe for use in close-source applications. The LGPL share-alike terms do not apply to applications built on top of ØMQ.

• You do not need a commercial license. The LGPL applies to ØMQ's own source code, not your applications. Many commercial applications use ØMQ.