@hansmetzke You are correct it is. I get that this might be a bit confusing in this context, but European Alternatives also lists open source Products that are relatively easy to self-host. On the site they are clearly mark as such, in subsections.
Here is the link to the "listing conditions": https://european-alternatives.eu/about
and the link to the category that Bitwarden is listed, where you can see how they are listed: https://european-alternatives.eu/category/password-managers