Blazegraph is freely available under the GPLv2 open-source license. All features of Blazegraph are ultimately released into open source under this license. It is our belief that merely accessing the Bigdata database server using the platform's HTTP REST API does not trigger the requirement to distribute proprietary code under the GPLv2 License. The FSF recommends the use of the Affero GPL for people who do not want to allow SaaS without triggering a distribution. See the section on Affero GPL at http://www.gnu.org/licenses/. We deliberately do not use the Affero GPL license.
We also offer a number of commercial license options, no-cost commercial licenses to government and research organizations with a support contract or joint research, and paid subscriptions for commercial entities.
We provide development and production support options for both open source and commercial licenses.