And Tictail and Truecaller. I would also count Skype as Swedish and also Soundcloud even though I think they moved to Berlin pretty early on.
I thought Skype was initially based in Estonia?
According to the Wikipedia article: "Skype was founded in 2003 by Niklas Zennström, from Sweden, and Janus Friis, from Denmark.[30] The Skype software was created by Estonians Ahti Heinla, Priit Kasesalu, and Jaan Tallinn. "
Lots more game companies too, from AAA companies like DICE and Paradox to indie games.