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Original author(s)Eric Marsden
Developer(s)Luke Gorrie and Helmut Eller
Initial releasemid-2003
Stable release
2.30[1] Edit this on Wikidata / 27 April 2024; 2 months ago (27 April 2024)
Operating systemLinux, Solaris, FreeBSD, NetBSD, OpenBSD, Mac OS X, Microsoft Windows
Available inEmacs Lisp, Common Lisp
TypeSource code editor
LicensePublic domain software,[2] portions in GPL v2, LGPL, BSD

SLIME, the Superior Lisp Interaction Mode for Emacs, is an Emacs mode for developing Common Lisp applications. SLIME originates in an Emacs mode called SLIM written by Eric Marsden. It is developed as an open-source public domain software[2] project by Luke Gorrie and Helmut Eller. Over 100 Lisp developers have contributed code to SLIME since the project was started in 2003. SLIME uses a backend called Swank that is loaded into Common Lisp.

SLIME works with the following Common Lisp implementations:

Some implementations of other programming languages are using SLIME:

There are also clones of SLIME:


  1. ^ "Release 2.30". 27 April 2024. Retrieved 25 May 2024.
  2. ^ a b Slime on github.com "License SLIME is free software. All files, unless explicitly stated otherwise, are public domain."
  3. ^ swank-js
  4. ^ "swankr". Archived from the original on 2011-03-04. Retrieved 2012-09-11.
  5. ^ [1] in the slime repo.