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OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
ØMQ Licensing
ZeroMQ Free Software Licenses
The libzmq library is licensed under the
linking exception.
•You get the full source code. 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.
ZeroMQ for Commercial Applications
•ZeroMQ is safe for use in close-source applications. The LGPL share-alike terms
do not apply to applications built on top of ZeroMQ.
•You do not need a commercial license. The LGPL applies to ZeroMQ's own source
code, not your applications. Many commercial applications use ZeroMQ. Intent to
Move to MPL v2
It is the intention of the ZeroMQ community to move gradually towards the Mozilla Public
License v2, as a replacement for the current LGPLv3 + static link exception.
MPLv2 offers largely the same advantages as our custom LGPLv3 + static link exception
license, with the added advantage of being a standard license, thus easier for corporate
lawyers to accept.
MPLv2 is the recommended license for new ZeroMQ projects, and where possible, ZeroMQ
projects should collect approval from contributors to move towards MPLv2.
GNU Lesser General Public License
V3 plus a static
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