OpenShift is described as 'is Red Hat's free, auto-scaling Platform as a Service (PaaS) for applications. As an application platform in the cloud, OpenShift manages the stack so you can focus on your code' and is a popular app in the Development category. There are more than 50 alternatives to OpenShift for a variety of platforms, including Online / Web-based, Linux, Windows, SaaS and Mac. The best alternative is Heroku, which is free. Other great apps like OpenShift are Kubernetes (Free, Open Source), Rancher (Free Personal, Open Source), Google App Engine (Freemium) and Microsoft Azure (Paid).
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.
Google App Engine is a free* platform for developing and hosting web applications in Google-managed data centers. App Engine offers fast development and deployment; simple administration, with no need to worry about hardware, patches or backups; and effortless scalability.
Most users think Google App Engine is a great alternative to OpenShift.
We help developers deploy and run their apps with bulletproof infrastructure, automatic scaling, fair pricing and other awesome features. We aim to make an easy-to-use service, without any vendor lock-in and able to grow with your needs.
Apache's CloudStack is a Project backed by Citrix and designed to be a direct competitor to OpenStack. It is designed to deploy and manage large networks of virtual machines, as a highly available, highly scalable Infrastructure as a Service (IaaS) cloud computing platform.
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CloudStack vs OpenShift opinions
pros, cons and recent comments
CloudStack is about running virtual machines and infrastructure-as-a-service at scale. It is an alternative to OpenStack. OpenShift is a platform-as-a-service that uses Kubernates which is containers-as-a-service. So you can use OpenShift on top of CloudStack just as you can run OpenShift on top of OpenStack. So CloudStack isn't an alternative to OpenShift.