History

1998 - David Luckham and Brian Frasca from Standford publishes "Complex Event Processing in Distributed Systems"
2002 - First version of ruleCore CEP Server created.
2003 - Coral8 founded
2003 - StreamBase founded.
2004 - SENACTIVE founded.
2004, Oct - First version of Esper released.
2005, Apr - Progress Software acquires Apama
2006, May - Investors of iSpheres backs out and the company is shut down and assets eventually bought by Avaya.
2007, July - BEA acquires a license of Esper and creates an own fork known as BEA EventServer
2008, Jan - IBM acquires AptSoft
2008, March - ruleCore CEP Server 2008 released.
2008, June - Event Processing Technical Society founded.
2008, March(?) - Sybase gets a source code license of Coral8, to be used in Sybase RAP.
2009, March - Aleri acquires Coral8.
2009, June - UC4 acquires Senactive
2010, February - Sybase acquires Aleri
2010, August, "Event Processing in Action" by Opher Etzion and Peter Niblett