Forgejo

Forgejo is an open source git forgeA piece of software that provides a git server and web interface. that aims to implement federationFederation is when servers connect to each other in a peer-to-peer decentralized network using a common protocol. using the ActivityPub protocol. It can be self-hosted to provide code collaboration services similar to GitHub, such as remote git repositories, issue tracking, and pull/merge requests.

Step 0 (Optional): Change your SSH to a nonstandard port

Git forges provide the ability to interact via HTTP or SSH. If you want users to interact with your Forgejo instance using the standard SSH port, and you have an existing SSH server on the same device, you must move your regular SSH server to another port. Forgejo supports SSH over other ports, but all of your users will have to specify that port in their git clone commands or configure it in their ~/.ssh/ssh_config file.

To change your SSH port, edit /etc/ssh/sshd_config, uncomment the line starting with Port, and change the number to something other than 22. Open the corresponding port in your firewall. For more information on firewall configuration, see Firewalling Basics.