Hacker News Reader

There was even a Lisp on DOS.

There's even one for 8-bit Ataris:

Interlisp[28] – developed at BBN Technologies for PDP-10 systems running the TENEX operating system, later adopted as a "West coast" Lisp for the Xerox Lisp machines as InterLisp-D. A small version called "InterLISP 65" was published for the 6502-based Atari 8-bit family computer line. For quite some time, Maclisp and InterLisp were strong competitors.

Logo was a very popular language at the time, and is clearly Lisp at heart.

Most 8 and 16-bit microcomputers at the time had a Lisp.

Cambridge Lisp was available from MetaComCo.

I ported Franz Lisp to the Atari ST.

Indeed there was. The first Lisp I saw was a port of David Betz's xlisp to the Atari ST (in the 1980s). The port was buggy and I didn't have the sources, so I needed to get started on writing my own interpreter. The rest is history, as they say.