Free Open-Source Documentation Creator Tool

Hey folks!! Welcome to the new blog I was building a product, buildsaas.dev and writing documentation for it. I tried to find alternatives on the internet, find Fumadocs, Docusaurus and Mintlify. But they have a loophole, each of them not serving the way I want it. I am required to create a simple Nextjs React repository that helps me to create documentation for any SAAS product in future. This repository should also help with the following features, as defined Easy to download, install the repo