What program on a poppy to translate the input language of letters?

Question

Keyboard

I'll try to explain. In general, it happens that you need to print something, for example, in Russian, but there is an English layout. You type, and then you look in the wrong language. And you have to delete everything and re-enter. In general, what is the name of the program to press and English letters are converted to Russian and vice versa. The program is needed for the Mac axis.

Answer 1

Punto Switcher https://yandex.ru/soft/punto/mac/