For programming GNU Emacs. For simple text files, config files, and small scripts I use mg. mg is great for what it is, it has Emacs keybinds (important), and has no distractions that would be annoying otherwise.

Neatvi is interesting in terms of what it is capable of while being a more featureful vi rather than a less capable vim. However, as much as it would be a good alternative to mg, I cannot cope with a text editor without Emacs keybinds, so unfortunately it's not an option, even though it is really cool.