Airbrake

Airbrake provides error monitoring and performance monitoring for an application stack. Notifiers are available for all major languages and frameworks and report errors from testing to production.

Errors are sent with real-time alerts and traced down to the line of code. Performance monitoring is agentless and lightweight, giving visibility into the health of the application. Airbrake integrates with common development tools and supports single sign-on.

Airbrake is a commercial service from LogicMonitor, with Dev, Basic and Pro plans and a free trial; accounts can downgrade to a free developer plan.