Copyright © 2015-2019 Dubalu LLC
All rights reserved. All materials in the Xapiand project, including source code, documentation, trademarks, service marks, trade names, trade dress, product names, logos and images are copyright to their respective owners and are protected under international copyright laws.
Source code and documentation in the Xapiand repository is variously licensed under the MIT license, BSD-style licenses, the Apache License Version 2.0, and GNU General Public License Version 2.
Source code in a given file is licensed under the MIT license and the copyright belongs to Dubalu LLC unless a LICENSE file present in the directory subtree declares a separate license or otherwise noted at the beginning of the file.
The current distribution of Xapian contains many files which are only licensed under the GPL, but work is in the progress towards being able to distribute Xapian under a more permissive license, once this process is complete, there will not be any more GNU GPL licensed code in this repository.
Xapiand clients and documentation are heavyly based upon the work from the Elasticsearch project, licensed under the Apache License.