joaotavora/sly
Sylvester the Cat's Common Lisp IDE observed · 2026-10-18
Health v2 · maintenance only
67/100
- Activity 99
- Release rhythm 8
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-22. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4608
- days_rel: n/a
- days_push: 9
- n_releases_24m: 0
Adoption not part of the score
1442 stars · 156 forks observed · 2026-10-18
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
SLY is a Common Lisp IDE for Emacs, a fork of SLIME with improved UX. It provides a full-featured REPL, live code annotations (stickers), flex completion, a trace dialog, inspectors, and debuggers.
Use cases
- develop Common Lisp in Emacs
- get a better REPL for Common Lisp
- annotate code to record values as it runs
- trace function calls interactively in Lisp
- migrate from SLIME to a more modern Lisp IDE
- inspect and debug Common Lisp code interactively
When to choose
- you write Common Lisp and use Emacs as your editor
- you want SLIME features with improved UX like stickers and backreferences
- you need multiple REPLs and inspectors simultaneously
When to avoid
- you use another Lisp dialect like Scheme or Clojure
- you prefer a standalone IDE like LispWorks or a VS Code setup
- you don't use Emacs
Facets
plugin · maturity active
editor developer-tools programming-languages developer-tools text-editors editor-plugin cross-platform common-lisp ide slime-fork repl emacs-lisp emacs
1 source
- readme: https://github.com/joaotavora/sly · fetched 2026-10-18 · f3d3630d57c5
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| joaotavora/sly | main | 67 |
For agents
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem