The guys from Rollbar made very useful error monitoring service.

We have implemented it in our startup weblium.com. This allowed us to see all errors centrally in one place and now our site has become significantly more stable than it was previously.

The main advantages of Rollbar:

1. Reporting all exceptions and errors We just add simple Rollbar code and it catches all unhandled exceptions. Very useful and simple feature, that we use.

2. Custom error reporting. We add some asserts on the most complex part of the code, to catch potential logic errors at the very beginning.

3. Real-time log. When you have to test the production. Instant error logging helps save time.

4. Assign Owner Each error can be assigned to the developer and can be marked as resolved when done. Very useful.

5. RQL Console The new tool, it allows us to create detail data queries. Very powerful tool for the analysis of problem areas in our code.

We have a very good experience with Rollbar. I highly recommend this service.