You can however use an unofficial Bitwarden server fork that is free.
Is it a fork? Looks like a separate project.
Yeah, you are right. I didnt know much about it. My coworker uses it for his personal server and really likes it. When I saw this thread I asked him about it again so I could help @Kelly clear things up.
Looks perfectly nice, wish it had more of a "showing it off" website.
He says its actively maintained and follows BW updates pretty frequently.