What is Microsoft Translator?

Microsoft Translator is a Microsoft Edge extension in preview for the Microsoft Insiders in a recent Build.

You can read more about it here and here.

It supports 50+ languages:
The Microsoft Translator supports more than 50+ languages.

Languages that are supported by this extension:
   # Arabic
   # Bosnian (Latin)
   # Bulgarian
   # Catalan
   # Chinese Simplified
   # Chinese Traditional
   # Croatian
   # Czech
   # Danish
   # Dutch
   # English
   # Estonian
   # Finnish
   # French
   # German
   # Greek
   # Haitian Creole
   # Hebrew
   # Hindi
   # Hmong Daw
   # Hungarian
   # Indonesian
   # Italian
   # Japanese
   # Kiswahili
   # Klingon
   # Klingon (plqaD)
   # Korean
   # Latvian
   # Lithuanian
   # Malay
   # Maltese
   # Norwegian
   # Persian
   # Polish
   # Portuguese
   # Queretaro Otomi
   # Romanian
   # Russian
   # Serbian (Cyrillic)
   # Serbian (Latin)
   # Slovak
   # Slovenian
   # Spanish
   # Swedish
   # Thai
   # Turkish
   # Ukrainian
   # Urdu
   # Vietnamese
   # Welsh
   # Yucatec Maya

It supports even Klingon for the Star Trek afficionados.

In order to work with Microsoft Translator you need to be signed in for the Insiders Program and then you can download and install as explained in one of the above links.