I know most of you already know these apps or need something more advanced but I found them interesting so I thought I might as well share it here for those not familiar with them.
WARNING: one of the apps in the list (Plexamp) doesn't appear to be open-source so use it with caution.
I prefer to use Piped links but custom APIs don't work reliably anymore due to some YouTube side A/B bot check changes so I had to use a YouTube link instead. I expected the bot to create a Piped link in the comment for those who want it but it didn't do it for some reason.