Many of our computers nowadays will flag spelling and grammar errors. I've found that the Macintosh OS X operating system corrects French and Swedish spelling.
We will have a Russian guest later this month and I sent her a short welcome message, with a little bit of Russian. I was quite surprised to see some of the words underlined in red. For one of the words my computer gave some choices and I selected the one I thought was appropriate. The other I had to look up on Google to get the correct spelling.
Oh, for my Russian readers, the words were русский and извините in Извините! Не понимаю русский язик! (Excuse me! I don't understand the Russian language!) I had an й where I shouldn't and didn't have an й where I should.