There are multiple other languages available. And even if the Wikipedia is hosted by an american foundation, it’s released under a free licence and written by collaborators all over the world. So there is kind of no need for a non-american version?

Nextcloud is really good. Try it.

Firefox has native vertical tabs now.

I have been running german Tolinos for several years now and they seem like what you are searching for. Quite cheap. They are doing what they should. You can buy books from your local bookshop or even lend them from your local library. And that little Flip remote is one of the best things I bought in the last year