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SLIME is the Superior Lisp Interaction Mode for Emacs.
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SLIME extends Emacs with support for interactive programming in Common Lisp.
The features are centered around slime-mode, an Emacs minor-mode that
complements the standard lisp-mode. While lisp-mode supports editing Lisp
source files, slime-mode adds support for interacting with a running Common
Lisp process for compilation, debugging, documentation lookup, and so on.
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The slime-mode programming environment follows the example of Emacs’s native
Emacs Lisp environment. It also includes good ideas from similar systems
(such as ILISP) and some new ideas.
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SLIME is compatible with the following free Common Lisp implementations:
CMUCL, SBCL, CCL, CLISP, ECL, ABCL.
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This package contains the Lisp-side server, needed by the Emacs client
(see package slime).