Siddhi CEP is a lightweight, easy-to-use Open Source Complex Event Processing Engine (CEP) under Apache Software License v2.0. Siddhi CEP processes events which are triggered by various event sources and notifies appropriate complex events according to the user specified queries.
This project was started as a research project initiated at University of Moratuwa, Sri Lanka,and now being improved by WSO2 Inc.
Siddhi is now being used as the core engine for WSO2 CEP
The development in Sourceforge is now retired !
Please find the improved version of Siddhi from the Siddhi Git Repo