I forgot SSH, from the list of significant Finnish OSS projects, though I think original SSH by Tatu Ylönen was freeware, not OSS proper.
What's not to like about Linux or IRC or even MySQL?
The back ticks to escape MySQL columns ;) But that doesn't remove the huge thanks for producing reliable OSS at such a level that it's a competitor to Oracle.
You forgot Dovecot.
Buzz sequencer. But that's a niche software product.
Wasnt MySQL Swedish?
There were two founders, one Finnish and the other Swedish.
The original author, Michael Widenius is a Finlandswede (swedish speaking minority in Finland).
He founded the company MySQL AB together with two Swedes in Sweden.