Brand new: Apache LGPL license
Published August 2nd, 2006 in GeneralEsper is a very interesting project about temporal querying on events. I hope to use it soon in a project. But beyond that, they invented the Apache LGPL license:
“Esper was designed to make it easier to build CEP and ESP applications. Esper is open-source software available under the Apache LPGL license.”
This was actually a typo error, Esper 1.0 is LGPL.
Thought so ;-)