This is a list of Git Servers that I know of.
Gitea - Lightweight Go-based git server
https://about.gitea.com
GitBucket - Java based git server (Runs natively on IBM i)
https://gitbucket.github.io
GitHub - Microsoft
https://www.github.com
BitBucket - Atlassian
https://www.bitbucket.com
GitLab - (Commercial and Community Versions)
https://www.gitlab.com