# slime/slime

The Superior Lisp Interaction Mode for Emacs

Repository: https://github.com/slime/slime
Canonical: https://ross.abutalabs.com/products/slime-slime
Homepage: http://common-lisp.net/project/slime/
Language: Common Lisp
License Family: other
Topics: common-lisp, emacs
Last push: 2026-08-25T21:53:34+00:00

## Health v2 (maintenance only)
Score: 74/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 28, longevity 100
- inputs: {"age_days": 4639, "days_push": 8, "days_rel": 268, "gap_med": 372, "n_releases_24m": 2}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2079, forks 350 (observed 2026-08-28T04:06:11.551384+00:00)

## What it is
SLIME (Superior Lisp Interaction Mode for Emacs) is an Emacs plugin that provides an interactive development environment for Common Lisp. It connects Emacs to a running Lisp process, offering a REPL, debugger (SLDB), inspector, compilation notes, completion, and documentation lookup.

## Use cases
- interactively develop Common Lisp in Emacs
- connect Emacs to SBCL or other Lisp implementations
- debug Common Lisp code with an Emacs-based debugger
- evaluate and compile Lisp code from source buffers
- find definitions and cross-references in a Lisp image
- inspect Lisp objects interactively

## When to choose
- you write Common Lisp and use Emacs as your editor
- you want an IDE-like REPL-driven workflow for Lisp
- you need debugger, inspector, and compiler integration inside Emacs

## When to avoid
- you use a different editor like VS Code or Vim
- you develop in Clojure or Scheme rather than Common Lisp
- you prefer a standalone graphical IDE

## Facets
- artifact type: plugin
- maturity: stable
- function: editor, interpreter, developer-tools
- domain: programming-languages, developer-tools, text-editors
- platform: windows, bsd, cross-platform
- tags: common-lisp, emacs-lisp, repl, interactive-development, debugging, ide, emacs, linux, macos

## Member repositories
- slime/slime (main) score 74

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:11.551384+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:56:05.185691+00:00, confidence not recorded.
  - readme: https://github.com/slime/slime (fetched 2026-08-28T04:06:11.551384+00:00, sha 44d521432d70)
  - homepage: http://common-lisp.net/project/slime/ (fetched 2026-08-29T10:36:11.963681+00:00, sha 2a4988b4e725)
- Data as of 2026-08-30T08:39:29.467469+00:00.