Switzerland hosts, among other things, the EFPL, which does a great deal of technlogical achievement. The EFPL itself leads the Scala language development, among a lof of other stuff !

I'm not familiar with other countries as neutral as Switzerland which has a successful track record of staying neutral during two world wars on their borders, but I suspect there should be actually quite some. I _think_ that for example Kazakhstan is currently trying to follow a similar neutral political path.

Wire is a Swiss Slack alternative that’s open source. Do note the comment close to this one mentioning that Switzerland would also have to comply with the sanctions.

ProtonMail, maybe.