Like the author, I always thought IBM's Plex Mono had a bit too much character for a UI font, but I’m a big fan of IA's modifications: https://github.com/iaolo/

Like the author, I always thought IBM's Plex Mono had a bit too much character for a UI font, but I’m a big fan of IA's modifications: https://github.com/iaolo/iA-Fonts/tree/master/iA%20Writer%20Mono https://github.com/iaolo/iA-Fonts/tree/master/iA%20Writer%20... Part of the project are some interesting duospace and quad-space versions that I probably wouldn’t use for code, but are great for editing general text.