RHVoice worked for me.

That reminds me, I think I remember reading on the FreeTube page that they recommended using a VPN with it (this was before the current issues with Mullvad); anyone know why? Are FreeTube users in any danger of being hunted down by Sundar Pichai & co.?

Yeah, same here! I have to turn off Mullvad when watching FreeTube which is definitely annoying.

Possibly Odoo . . . ?