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

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

KairosDB

KairosDB is a fast distributed scalable time series database written on top of Cassandra. RESTful JSON-based query/results. Includes flot-based visualization.

     

linux windows osx open-source metrics visualization java cassandra

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

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

testssl.sh

A command-line tool which checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as some cryptographic flaws. It's designed to provide clear output for your "is this good or bad" decision.

     

linux osx open-source security shell