AWS Elastic Beanstalk is an easy-to-use service for deploying and scaling web applications and services.
Render is a unified cloud to build and run all your apps and websites.
Cloud 66 is like Heroku but on any cloud.
Google App Engine is a Platform as a Service (PaaS) on Google Cloud.
Azure App Service is a Platform as a Service (PaaS) on Microsoft Azure.
DigitalOcean App Platform is a Platform as a Service (PaaS) on DigitalOcean.
Kubernetes is a containerization platform for distributed applications.
A self-managed small PaaS implementation.