Licenses Available

• Free Express Edition

• Standard Edition

NServiceBus Licensing

The NServiceBus 2.0 code base is licensed under the Apache V2 License.
From version 2.5, NServiceBus will be available under multiple licenses:

• Reciprocal Public License 1.5 (RPL1.5)

• NServiceBus Express EULA which allows the use of NServiceBus code and binaries for free without releasing their source under the (RPL1.5), but limited to a single production server, having a maximum of 4 cores.

• NServiceBus Commercial License that removes the single server, 4 core limitation of the NServiceBus Express EULA.

NServiceBus Express Edition

This edition contains all NServiceBus functionality but, like Rails servers, is single threaded - capable of processing about 30 messages/s, or 2.5 million messages a day. Many processes can be deployed to the same box for even higher throughput, although with a slightly higher adminstrative overhead. Production use is limited to a single server with no more than 4 cores.

NServiceBus Express Edition EULA

NServiceBus Standard Edition

For companies requiring higher availability, scalability, better performance, and lower administration, NServiceBus Standard Edition commercial licenses and support are offered. With a single process able to handle about 1000 messages/s, or over 80 million messages a day, NServiceBus is enterprise-ready for the most strenuous mission critical applications.

NServiceBus Commercial Licenses