rust-lang/book vs sharkdp/fd
sharkdp/fd shows stronger signals overall
As of June 2026, fd shows healthier maintenance signals than book. fd rates Healthy overall while book rates Mixed. book last saw a commit 2 months ago with 11+ active contributors, while fd last saw a commit 1 month ago with 17+ active contributors. book is Other-licensed while fd is Apache-2.0-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.
rust-lang/book →
Single-maintainer risk — review before adopting
non-standard license (Other)
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.
- ⚠Single-maintainer risk — top contributor 88% of recent commits
- ⚠Non-standard license (Other) — review terms
- ✓Last commit 2w ago
- ✓11 active contributors
- ✓Other licensed
- ✓CI configured
- ✓Tests present
What would improve this?
- →Use as dependency Concerns → Mixed if: clarify license terms
Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests
sharkdp/fd →
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.
- ⚠Concentrated ownership — top contributor handles 53% of recent commits
- ✓Last commit 5d ago
- ✓17 active contributors
- ✓Apache-2.0 licensed
- ✓CI configured
- ✓Tests present
Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests
Signal-by-signal breakdown
| book | fd | |
|---|---|---|
| Stars | 17,729 | 42,886 |
| Last commit | 2mo ago | 1mo ago |
| License | Other | Apache-2.0 |
| Open issues | 425 | 182 |
| Has tests | ✓ | ✓ |
| Has CI | ✓ | ✓ |
| Test coverage | 2% | 19% |
| Dependency CVEs | No CVEs | No CVEs |
| Architecture grade | — | — |
| Cycles | — | — |
| Bottom-line | Mixed signals | Healthy signals |
Want the full analysis? rust-lang/book · sharkdp/fd
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