Docker - the open-source application container engine

Ansible is a radically simple IT automation platform that makes your applications and systems easier to deploy. Avoid writing scripts or custom code to deploy and update your applications— automate in a language that approaches plain English, using SSH, with no agents to install on remote systems.

System for managing containerized applications across multiple hosts, providing basic mechanisms for deployment, maintenance, and scaling of applications.

Vagrant is a tool for building and distributing development environments.

Simple daemon for easy stats aggregation

Gorgeous metric viz, dashboards & editors for Graphite, InfluxDB & OpenTSDB

Remote multi-server automation tool

Simple, Pythonic remote execution and deployment.

Software to automate the management and configuration of any infrastructure or application at scale. Get access to the Salt Open software package repository here:

logstash - transport and process your logs, events, or other data

A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure.

Server automation framework and application

A highly scalable real-time graphing system

Open source software for building private and public clouds

StackStorm (aka "IFTTT for Ops") is event-driven automation commonly used for auto-remediation, security responses, facilitated troubleshooting, complex deployments, and more. Includes rules engine, workflow,1800+ integrations (see /st2contrib), native ChatOps and so forth. Installer available at http://docs.stackstorm.com/install/index.html. Pi…

The Continuous Application Platform - build, deploy, and manage cloud-native and legacy applications on Kubernetes and Docker

A series of ebooks on Docker and the container ecosystem.