Google Cloud Run is described as 'Cloud Run is a managed compute platform that enables you to run stateless containers that are invocable via HTTP requests. Cloud Run is serverless: it abstracts away all infrastructure management'. There are four alternatives to Google Cloud Run for a variety of platforms, including Linux, Mac, Online / Web-based, Windows and SaaS. The best alternative is Heroku, which is free. Other great apps like Google Cloud Run are DevSpace (for Kubernetes and Docker) (Free, Open Source), Qovery (Paid) and Porter (Free, Open Source).
Heroku is a cloud application platform for Ruby, Rails, Node.js, Java, Python, Scala and Clojure web apps. Everything you need to build, run, and scale: Dynos: Run virtually any language at any scale. Database: Enterprise-grade Postgres as a service.
With a DevSpace, you can build, test and run code directly inside any Kubernetes cluster. You can run devspace up in any of your projects and the client-only DevSpace CLI will start a DevSpace within your Kubernetes cluster.
Porter is an alternative to Heroku that runs in your own cloud (AWS, GCP, DigitalOcean, etc). Get started on Porter without the overhead of DevOps and fully customize your infra later when you need to.