GemFire Real-Time Events
Luckily Scott from GemFire reads my blog, and correct my earlier incorrect statement about their product. Scott has also kind enough to point me at JDJ August 2006, “Building Real-Time Applications with Continuous Query Technology”. It appear Real-Time Events, like GemFire is written in Java. C++ and .NET interfaces are available, although they require the use of a 3rd party bridging technology.