Brooklyn

A Java based deployment tool, focused on both deployment as well as post-deploy lifecycle management. It is aware of network topologies, integrates with many cloud and PaaS APIs, and is designed to handle the entire roll-out

     

linux windows osx open-source provisioning orchestration java

bugsnag

Monitor everything you're building.

     

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

collectd

A daemon that collects system performance statistics periodically, and provides tons of plugins to store and analyze these values

     

linux windows osx open-source monitoring c

jclouds

A Java Library for controlling cloud resources, with various plugins for many popular cloud providers.

     

linux windows osx open-source cloud-paas java

jmxtrans

Plugs Java VM statistics via JMX to various backend monitoring tools

     

linux windows osx open-source monitoring java

Logstash

A modern tool for managing events and logs, with an ElasticSearch backend which allows a high degree of searching and filtering. It includes a shipper in remote systems, indexer in the aggregator machine, and a Web UI.

     

linux windows osx open-source monitoring java

Metrics

Captures JVM and application-level metrics for Java

     

linux windows osx open-source monitoring java

Monit

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

     

linux osx open-source monitoring process-mgmt c

Nagios Core

Nagios Core network monitoring software is a powerful, enterprise-class host, server, application, monitoring and alerting tool

     

linux solaris bsd open-source monitoring c

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

Rundeck

Turns your operational procedures into self-service portal. Define common operational tasks in the Rundeck web portal, and safely hand it over to the rest of the team so that they can perform these tasks without you being around.

     

linux windows osx open-source orchestration java

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

Zabbix

An open source, enterprise-class monitoring framework

     

linux windows osx open-source monitoring c