I’ve seen many threads suggesting products but they often don’t mention FOSS projects, which should always be preferred to corporate software. With FOSS you are already boycotting capitalism, on either side. Free and Open Source ignores borders and shouldn’t be categorized in nationalist terms, no matter where some of the maintainers happen to live.
If you are worried about US laws affecting FOSS projects, it can always be forked, perhaps even be rewritten.
Of course, but what about the individual behind it, if it is someone who is also against their current government, while having to live in that country? It is tricky to ask how to reconcile the need for EU solutions while encouraging American citizens to fight against their system!