Bitwarden on Amazon Lightsail server. It costs $3.50/mo to self-host which is very competitive comparing to paid password managers. I use bitwarden_rs[0] server written in Rust which is much lighter implementation you can run on cheapest 512mb instance. Official bitwarden[1] server is using docker and mssql which requires a lot of RAM. You can run it on Linux through Firefox extension as well as on any operating syst…
Have you tracked or checked how well bitwarden_rs keeps up with mainline Bitwarden on changes and fixes? I’m usually concerned about these forks getting way behind or getting abandoned after sometime. At least mainline Bitwarden has paid subscription tiers to support ongoing development and maintenance, which may provide some predictable income for that.
Security-wise, I used nginx over my custom domain to enforce HTTPS and put bitwarden app itself behind a firewall.
As a bonus, bitwarden_rs also enables all premium features for you ("You are a premium member!" label is by default in every client).