Events (and event subscriptions) are a major concept for loose integration of independent components. Zope3 supports events and event subscriptions. However, its subscriptions are global. Many (local) services are interested in events generated in a specific subsite. A prominent example are catalogs that catalog objects in a subsite. "localevent" is a Zope2 product. It provides a (persistent and local) local_event_subscription tool (in the sense of CMF tools). Other tools can use it to subscribe for (Zope3) events originating in the subsite rooted in the parent of the local_event_subscription instance. More information and download <http://www.dieter.handshake.de/z23> -- Dieter