In Belarus we use this:
Belarusian spellcheckerOnce you learn calculus, you've caught up to what was the cutting edge of math in 1687.
English-Belarusan dictionary
арфаграфічны слоўнік
спецпошук
айцішны слоўнік
Па-беларуску: how to say matrices in Belarusian
Як перакладаецца на беларускую мову
Translation of matrices — from English to Belarusan