Exception aggregator / classifier

Hi list,

I'm looking for a way to get a better resolution to unhandled
exceptions. As of now I'm using the exception notifer plugin. It is
nice to get an email when an exception occurs, but I would like to also
have some kind of aggregation of exceptions, preferably classified, so I
can see which exceptions are most frequent, etc. I'm imagining some kind
of webbased tool which will classify and display exceptions.

Does anyone have any suggestions to such a tool? I can't seem to find
anything on google. Or perhaps there's an even better solution which I
simply haven't thought of.