There's a number of places out there, some of which also support alternatives to Git itself as mentioned in the article. By no means a complete list and in no particular order:

GitLab - https://about.gitlab.com/

Sourcehut - https://sourcehut.org/

Codeberg - https://codeberg.org/

Launchpad - https://launchpad.net/

Debian Salsa - https://salsa.debian.org/public

Pagure - https://pagure.io/pagure

For self hsoted options, there's these below projects, some of which power the above (and most of the above can be easily self hosted, too, it's just that this list doesn't have any hosting from the project itself):

Forgejo - https://forgejo.org/

Gitea - https://gitea.io/en-us/

Gogs - https://gogs.io/