Loggly is super slow. Airbrake's js client appears to be second-class at best. Nothing else I've found seems, well, great.<p>Needs:<p>* Log arbitrary events, not just caught exceptions.<p>* Support down to IE8.<p>* Decent reporting and aggregation interface.<p>* Some kind of sensible de-duping.<p>* Bonus: API to query my data.
I saw this.<p><a href="http://www.sideprojectors.com/project/project/74" rel="nofollow">http://www.sideprojectors.com/project/project/74</a><p>Not sure if it helps.