Marathon-lb is a service discovery & load balancing tool for DC/OS

Deploy and manage containers (including Docker) on top of Apache Mesos at scale.

Server automation framework and application

relay.sh - Event-driven workflows for DevOps automation

The shortest path to better modules: Puppet Development Kit; Download:

Bolt is an open source orchestration tool that automates the manual work it takes to maintain your infrastructure on an as-needed basis or as part of a greater orchestration workflow.

Spotinst SDK for the Java programming language.

Spotinst SDK for the Python programming language.