Heroku is a platform as a service (PaaS) that enables developers to build, run, and operate applications entirely in the cloud.

Heroku is the most popular Web-based alternative to Kubernetes.
Heroku is the most popular commercial alternative to Kubernetes.
- Heroku is Paid and Proprietary

































virt-manager can handle clusters of several physical VM hosts, each running many VMs. It offers advanced orchestration features such as migrating VMs between hosts with no downtime, storage provisioning, networking/firewall configuration and live snapshots. A major difference between Kubernetes and virt-manager (as well as the libvirt ecosystem in general) is that Kubernetes manages containers, whereas libvirt manages full VMs running on a hypervisor such as KVM, Xen or ESX.