Lisp is a programming language famous for its use in Artificial Intelligence and advanced Computer Science research. First developed in 1958, it is the second oldest (after Fortran) high-level programming language still in common use.

Two dialects of Lisp are available at TWENEX.ORG, InterLisp-10 and Maclisp.

(@LISP)

InterLisp was developed in 1967 at Bolt, Beranek and Newman (BBN) for TENEX, BBN's in-house PDP-10 operating system. Development was later transfered to XEROX PARC. The language became popular with Stanford University AI researchers and at other principly US West-Coast institutions.

InterLisp was noted for its integration of interactive development tools into the the programming environment: debugger, Lisp-structure-aware editor, spelling corrector, file manager.

The dialect was in a rivalry with Maclisp prior to the development of Common Lisp.

(@MACLISP)

Maclisp was developed in the mid-1960's as part of MIT's Project MAC¹⁾, originally for the PDP-6 ITS operating system.

Maclisp was a highly influential language and was the primary inspiration for Common Lisp, with contributions form other dialects like InterLisp.

W. Teitelman. (1974). InterLisp Reference Manual [Online]. Available: http://bitsavers.informatik.uni-stuttgart.de/pdf/xerox/interlisp/1974_InterlispRefMan.pdf

K.M. Pitman. (2007, December 16). The Revised Maclisp Manual [Online]. Available: http://www.maclisp.info/pitmanual

C. Weissman. (1967). Lisp 1.5 Primer [Online]. Available: http://www.softwarepreservation.org/projects/LISP/book/Weismann_LISP1.5_Primer_1967.pdf

EMACS LEDIT mode

(Is LEDIT another Lisp dialect, or just a TOPS-20 Emacs (non-/pre-GNU/Elisp) mode for editing Lisp source code?)