Exceptionless is described as 'You can send any type of event to your Exceptionless dashboard. Create tags for organization, and you've got a robust event logging system! What Is Exceptionless?' and is an website in the Development category. There are more than 10 alternatives to Exceptionless, not only websites but also apps for a variety of platforms, including iPhone, Android, Mac and Self-Hosted solutions. The best alternative is Sentry, which is both free and Open Source. Other great sites and apps similar to Exceptionless are GlitchTip (Free, Open Source), TestFlight (Free), App Enlight (Freemium) and SessionStack (Freemium).
Doctor Dump is a free crash reporting and memory dump analyzing service. Its work is to collect software problem reports (crashes, failures, assert violations and so on) from your customers all over the world, to group them and to give you all necessary data to fix the problem.
Errbit is a tool for collecting and managing errors from other applications. It is Airbrake (formerly known as Hoptoad) API compliant, so if you are already using Airbrake, you can just point the airbrake gem to your Errbit server.