

Penicillin / antibiotics comes to mind. As well as vaccines. “Oh you’re body is being taken over by millions of microscopic organisms? Take this pill and it will go away. Maybe take this shot too so it won’t happen in the first place.”
And of course computers + the internet were a pretty big boom too.
This OS isn’t made by the EU, but it’s goal is to become sponsored by them:
Personally I don’t see why EU wouldn’t just go with Suse. It has the corporate support that I guess these government institutions crave, it’s a good system as far as I know and it’s home-grown. Ubuntu is another option, Canonical is a British company (not EU anymore but it is European).