• This style is based on Monaco font (https://github.com/todylu/monaco.ttf).
• Notepad++, of course.

Copy the Material-Dark.xml file to "%APPDATA%\Notepad++\themes" and in a portable installation to "%Notepad++%\themes".

Or simply import it to Notepad++ by going to Menu -> Settings -> Import -> Import Style theme(s) option.

Simply downloading the xml file only from GitHub doesn't work, because the file downloaded this way is not a valid xml. You have to:

• download the whole project
• extract the xml file and copy it in C:\UsersAppData\Roaming\Notepad++\themes\
• restart Notepad and enable the theme