Who developed Emacs?

Emacs was developed by Richard Stallman in the mid-1970s while he was working at the Massachusetts Institute of Technology (MIT). It was originally created as a set of macros for the TECO text editor but evolved into a standalone, extensible text editor. Stallman later founded the Free Software Foundation and promoted the concept of free software, which Emacs embodies. The editor has since been further developed by many contributors and has numerous variants, the most notable being GNU Emacs.