vi
Used by 13 peopleen.wikipedia.org ↗
“I started doing this on the Amiga in 1988, which only had a buggy and limited version of Vi, the editor I was familiar with.”
Bram Moolenaar Interview, Developer (Vim) · via Uses This 
“I've tended to start using Xcode for editing source code in general although historically I've just used vi.”
Anselm Hook Interview, MakerLab hacker, CTO of Meedan · via Uses This
