It should be noted that Feddit.org was included to represent Germany, Austria and Switzerland.
I did not include Baraza.africa as that was too encompassing as it covers the whole African continent.
Hopefully this post inspires more countries to join the blue club!
There is (was?) an Indian one… but run by hindutva (extreme right-wing) nationalists, so I think we can skip that one.
There is also one that is located in Japan, but no idea if it can be described as an instance for Japan.