Forrester report on Complex Event Processing Platforms

I guess CEP is now a mainstream technology according to Forrester. What took them so long, huh?

According to the report (of which you can only find excerpts of unless you buy it), TIBCO BusinessEvents is in the forefront along with a few others. IBM and Oracle seem to be moving closer. Nice to see Esper also in the list. I wonder why JBoss Drools is not there.