That is if you consider really wanting to have it's main function to work.

Alternatively, You could try to self host one for yourself.

There are two flavor of the project.

https://github.com/Yonle/bostr (NodeJS) (If you plan to self host ONLY for your own EASILY, use this)

https://github.com/Yonle/bostr2 (Go) (If you plan to self host ONLY for your own, use something like vpn/wireguard/tailscale/zerotier)