If you know any other good editors, please contact me.
Fast, uses many different programming languages, shows a function list, is available in german and free of charge.
Checks your code in real-time on syntax errors and wrong names of variables. However, it is sometimes less stabel. Therefore, it is helpful to save often. And it is free of charge.
I am not really familiar with it, but it is also available in german and is free of charge.