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.
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.
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.