Kontena is described as 'Built to maximize developer happiness. Works on any cloud, easy to set up, simple to use at any scale' and is an app. There are seven alternatives to Kontena for a variety of platforms, including Linux, Online / Web-based, Windows, Mac and Self-Hosted solutions. The best alternative is Heroku, which is free. Other great apps like Kontena are Kubernetes, Rancher, OpenShift and Docker Swarm.
Rancher is an open source container management platform built for organizations that deploy containers in production. Rancher makes it easy to run Kubernetes everywhere, meet IT requirements, and empower DevOps teams.