Docker Swarm
Native clustering for Docker. Turn a pool of Docker hosts into a single, virtual host.
19 Alternatives To Docker Swarm

Apache Karaf
Apache Karaf is a lightweight, modern and polymorphic container powered by OSGi.

Apache Mesos
Apache Mesos abstracts resources away from machines, enabling fault-tolerant and elastic distributed systems to easily be built and run effectively.
Azk
azk is a lightweight open source development environment orchestration tool.
Azure Container Instances
Easily run application containers in the cloud with a single command. Azure Container Instances lets you get started in seconds and lower your infrastructure costs with per-second billing.

Azure Kubernetes Engine
AKS Engine: Units of Kubernetes on Azure! Contribute to Azure/aks-engine development by creating an account on GitHub.
Cloudify
Cloudify enables developers to automate entire application lifecycle from deployment to scaling.

CoreOS
CoreOS platform provides the components needed to build distributed systems to support application containers.

Docker
Docker is an open platform that enables developers and system administrators to create distributed applications.

Docker Compose
Define and run multi-container applications with Docker
Google Kubernetes Engine
Google Kubernetes Engine is a powerful cluster manager and orchestration system for running your Docker containers. Set up a cluster in minutes.
Helios
Docker container orchestration platform, by Spotify
Helm
The Kubernetes Package Manager

Heroku
Agile deployment platform for Ruby, Node.js, Clojure, Java, Python, and Scala. Setup takes only minutes and deploys are instant through git. Leave tedious server maintenance to Heroku and focus on your code.
Kitematic
The easiest way to start using Docker on your Mac

Kubernetes
Kubernetes is an open source orchestration system for Docker containers
Marathon
Marathon is a production-grade container orchestration platform for Mesosphere.

OpenShift
OpenShift gives you all the tools you need to develop, host and scale your apps in the public or private cloud. Get started today.

Portainer
Simple management UI for Docker

Rancher
Open Source Platform for Running a Private Container Service