[knerz]

https://eurkey.steffen.bruentjen.eu/

Has the US keys on the first/second levels and most/all special symbols for European languages easily accessible w/ modifier keys. Entirely removed the need to switch keyboard layouts for me.

[felixg3]

Yes, that’s a great layout! On Linux I use Germany (US) as a layout which is perfectly fine for my needs

[trinix912]

That’s nice but doesn’t include the letters used in Slavic languages.