Easily close all tabs from one site.
You should convert this from a browser action to a page action, so it shows up in the Omnibox and only for pages it applies to. Only a bit of work on your part, I would think.
https://www.davideviolante.com
auzwang
joshwdev
Peter Mareš
Anne Veling
Unknown
Amo Chen
LateTide
krystof1000
Tabrary
Spooky User
Kunihiro Ando