UrlDeToUs от David Hübscher

When you visit a URL containing '/de-de/', '/de_de/' or '/de/' a button will appear on the right of the address bar. When clicking the button it tries to open the en-us version of that URL in the same tab.

You can add URL patterns for URLs that should be automatically redirected to the en-us version in the settings of the extension.

Separate patterns by semi colons.
Example:
https://msdn.microsoft.com/*;https://docs.microsoft.com/*