bugsnag

Monitor everything you're building.

     

windows linux osx open-source ruby java python php nodejs errors

FastForward

Flexible operating-system event and metric forwarding agent. Receives input and forwards output using plugins.

     

linux windows osx open-source metrics monitoring ruby

InfluxDB

InfluxDB is a time series, metrics, and analytics database. It’s written in Go and has no external dependencies. InfluxDB is targeted at use cases for DevOps, metrics, sensor data, and real-time analytics.

     

linux open-source monitoring go metrics

Instrumental

Instrumental is a real-time, high-scale application and server monitoring tool with intelligent alerts, a powerful query language, and free development accounts.

     

linux windows oxs free metrics commercial metrics monitoring visualization php ruby python net java nodejs

Monit

An open source utility for managing and monitoring processes, programs, files, directories and filesystems

     

linux osx open-source monitoring process-mgmt c

Prometheus

Prometheus is an open-source systems monitoring and alerting toolkit built at SoundCloud.

     

linux open-source go metrics monitoring

Raygun

Raygun keeps a watchful eye on your web and mobile applications and tells you when problems arise.

     

windows linux osx open-source python nodejs java ruby errors

Rollbar

Detect, diagnose and defeat errors.

     

linux windows osx nodejs open-source ruby php java python errors

Sentry

Automate error tracking to find and fix issues before your users even experience a crash. Sentry is open-source, real-time, and loved by 100,000 developers around the world.

     

osx windows linux open-source errors nodejs ruby python php java monitoring