Tiny keyboard only supports en_US layout, I need at least two more of them.
8Vim is an interesting concept (on those without physical kbds) but I couldn't find a way to quickly switch the input language or at least quickly toggle between non-Latin and Latin, although there is some kind of quirky gesture to perform to do this. Probably need to put more time and effort into learning this arcane input method, but Thumb-Key looks more straightforward to me as of now.