TL;DR: We put the same Flask, Django and FastAPI apps on six places that host Python for free (SnapDeploy, Render, Railway, PythonAnywhere, Google Cloud Run, Vercel) with production Dockerfiles. Below: which framework to pick, what each host actually gives you free and where it stops, one comparison table, working Dockerfiles for all three frameworks, and five production habits (a real WSGI/ASGI server, slim images, pinned dependencies, a health endpoint, a .dockerignore).

Python is the most popular programming language in the world, and for good reason. Whether you are building a REST API with FastAPI, a full-stack web application with Django, or a lightweight microservice with Flask, Python gives you the tools to ship fast and iterate faster.

But once your app is built, you hit the next question: where do you host it?

The landscape for free Python hosting has shifted dramatically. Heroku killed its free tier back in 2022, and many developers are still searching for reliable alternatives.…