This is a simple Matrix bot that translates between users of different languages: The Babel Fish.
It uses a simple owner and user permission handling for inviding it into rooms and actively using it.
Once invited and joined each authorized user can set its language via "yourbotname: -language countrycode" which for example is. For German that is "yourbotname: -language countrycode". After that the bot translate any message in that room for you.
Have fun connecting to the world^^