It doesn't work. I wanted to practice Russian and that's why I installed it but it doesn't work at all. It keeps writing on Roman alphabet letters when the Ж button is on. Extremely frustrating. Don't waste your time.

useful, necessary

This would have been an excellent addon if only there was a way to add custom layouts! I need to have Mongolian. It would have been perfect if you could make it like the old Transliterator extension by Benya. Thanks and best regards!

Not perfect but has no competition I guess.