astral-sh/ruff vs schniz/fnm
Both showing Healthy signals — pick on fit, not health
As of June 2026, ruff and fnm both show healthy maintenance signals. ruff was committed to today with 21+ active contributors, while fnm last saw a commit 2 months ago with 23+ active contributors. ruff is MIT-licensed while fnm is GPL-3.0-licensed. Neither has known critical or high-severity CVEs in its dependency tree.
Informational only. RepoPilot summarises public signals at the time of analysis. Not professional, security, or legal advice.
astral-sh/ruff →
Healthy across the board
Permissive license, no critical CVEs, actively maintained — safe to depend on.
Has a license, tests, and CI — clean foundation to fork and modify.
Documented and popular — useful reference codebase to read through.
No critical CVEs, sane security posture — runnable as-is.
- ✓Last commit today
- ✓21+ active contributors
- ✓Distributed ownership (top contributor 35% of recent commits)
- ✓MIT licensed
- ✓CI configured
- ✓Tests present
Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against OpenSSF Scorecard
schniz/fnm →
Healthy across the board
copyleft license (GPL-3.0) — review compatibility
Has a license, tests, and CI — clean foundation to fork and modify.
Documented and popular — useful reference codebase to read through.
No critical CVEs, sane security posture — runnable as-is.
- ⚠GPL-3.0 is copyleft — check downstream compatibility
- ✓Last commit 3w ago
- ✓23+ active contributors
- ✓Distributed ownership (top contributor 49% of recent commits)
- ✓GPL-3.0 licensed
- ✓CI configured
- ✓Tests present
What would improve this?
- →Use as dependency Concerns → Mixed if: relicense under MIT/Apache-2.0 (rare for established libs)
Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests
Signal-by-signal breakdown
| ruff | fnm | |
|---|---|---|
| Stars | 48,249 | 25,417 |
| Last commit | today | 2mo ago |
| License | MIT | GPL-3.0 |
| Open issues | 2,036 | 214 |
| Has tests | ✓ | ✓ |
| Has CI | ✓ | ✓ |
| Test coverage | 100% | 9% |
| Dependency CVEs | No CVEs | No CVEs |
| Architecture grade | — | — |
| Cycles | — | — |
| Bottom-line | Healthy signals | Healthy signals |
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