The cost of running applications on the cloud are comparatively  low these days. For medium to large scale projects there are giants like aws, azure, gcp, etc... But for small and hobby projects with low traffic with not much performance overhead, the free hosting providers might be useful.

Even though they provide free hosting plans, the free quota for each hosting providers differs with respect to the platform. Read the documentation to find out which one suites you the most.

1. InfiniteFree

It's one of the oldest free hosting providers, they provide free hosting for small wordpress websites. They have free quota based on the processing time.

2. 000webhost

It provides free hosting for wordpress websites.

3. PythonAnywhere

It provides hosting for websites developed using python frameworks like django, flask and fastapi. It provides a bash console to manage the application. It has quota based on processing power used per month.

4.  Netlify

Netlify is the top static website hosting provider. With git integrations they provide fast, reliable and scalable setup for  developers and designers. 

5. Github Pages

For the developers who needs to host their portfolio, static , documentation or open source  websites from their repository github pages are the best option.