Home Contact

Event Series Intelligence


Esper and NEsper are open-source software available under the GNU General Public License (GPL) (GPL v2).

Esper and NEsper including documentation are copyrighted and the copyright is owned by EsperTech Inc., unauthorized reproduction or distribution of this copyrighted work is illegal.

For commercial licensing terms, please contact us for any inquiry.


Esper is a trademark of EsperTech Inc.

Use of the Esper trademark or logo for commercial purposes without the prior written consent of EsperTech Inc. may constitute trademark infringement and unfair competition in violation of federal and state laws.