is a text-based email client
that is commonly found on UNIX
It gained popularity because it was one of the first email clients to use curses
-like screen displays, and the source code
was freely available.
It was developed by David Taylor while working for Hewlett-Packard.
Development later passed to a team of volunteers.
It last made a public release in 1999.
Other popular email readers which followed--and were inspired by--Elm include the Mutt and Pine programs.