Bugsnag provides software development teams with an automated crash detection platform for their web and mobile applications. To date, Bugsnag has processed over 10 billion application crashes from thousands of top technology companies, including Walmart, Genentech, SugarCRM and Path. Bugsnag Inc. was founded by James Smith and Simon Maynard, and launched in September 2012.
Built by a hardcore team, Crashlytics is an elegant solution to a big data problem. The most powerful, yet lightest weight crash reporting solution, they find the needle in the haystack, even the exact line of code that your app crashed on. Crashlytics is now part of Firebase.
Sentry is an event logging platform primarily focused on capturing and aggregating exceptions. Sentry was originally conceived at DISQUS in early 2010 to solve exception logging within a Django application. Since then it has grown to support many popular languages and platforms, including Python, PHP, Java, Ruby, Node.js, and even JavaScript.