I highly recommend Gitea.

It’s what I use and it works very well.

Today I discovered Forgejo and Codeberg. It is hard forked from Gitea and when I have a few moments I’ll investigate more deeply to see whether or not to switch over. Good to know!

https://codeberg.org/forgejo/forgejo

Also similar to github pages https://codeberg.page

sourcehut is an alternative to github and friends https://sr.ht

another software forge located at https://kolaente.dev/explore/repos