Lots of companies I respect were using it + open-source + great features and UI. Went for the hosted version, since it plays nice with Heroku. I like how they group together similar errors, give you the ability to mute events or mark them as solved. P.S. check out the Founder Stories feature we did on Sentry if you want to know how they started, its an awesome story.

The error and event tracking in Sentry is superb. Being able to assign the raw error to people along with all information at the time the event occurred means that we're tracking and fixing problems before they become apparent to customers. We use the self-hosted instance of Sentry.

Sentry is a very powerful error reporting tool. We use it both on front-end and back-end of Ataccama One. It proved to be invaluable in providing insights on our errors - what caused it, what user did before the error occured, stack trace, release tracking and more.

We use Sentry to gather our thrown non-checked exceptions in one place, so we don't have to crawl through all our logs manually. All standalone-applications, our website aswell as our game-servers are linked into sentry.

Sentry is amazing, most of our systems send their exceptions to sentry. We couldn't live without it and get a much better understanding of how our code is behaving in the wild. Plus it integrates with Github.