If you use KDE Plasma and want an app which looks like your other Qt apps: https://apps.kde.org/keysmith/

I use Obtainium (available in F-Droid) alongside F-Droid since both have auto-updates
this is still tolerable to the old days of updating manually

biggest upside is I can update Tubular/Newpipe faster via Obtainium while F-Droids build system takes days

easier to use and more stable.

citation needed

thats what systemd sockets are here for