jBilling is available under two licenses: the Affero General Public License (GNU) version 3, and a Commercial license.

The General Public License

By default, when you download jBilling and use it for free, you will be using the Community Edition of jBilling and be bound to the AGPL license. This license is OSI certified, and comes with some restrictions. An important one is the need to release any modifications or extensions of jBilling under the GPL license as well. Read this FAQ about the GPL licenses and this FAQ about AGPL if you have any questions.

Commercial License

Many organizations, companies in particular, do not wish to be bounded by a GPL license. The alternative is to buy the Enterprise Edition of jBilling. This edition come with a commercial license which does not have some of the GPL restrictions. In addition to the different license, the Enterprise Edition has many additional features that the Community Edition does not have. To find out more about the differences, click here.