sigil-ebook/sigil vs valvesoftware/proton
Both showing Mixed signals — pick on fit, not health
As of June 2026, sigil and proton both show mixed maintenance signals. sigil last saw a commit 1 month ago with 4+ active contributors, while proton last saw a commit 1 month ago with 12+ active contributors. sigil is GPL-3.0-licensed while proton is Other-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.
sigil-ebook/sigil →
Mixed signals — read the receipts
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.
- ⚠Small team — 4 contributors active in recent commits
- ⚠Concentrated ownership — top contributor handles 76% of recent commits
- ⚠GPL-3.0 is copyleft — check downstream compatibility
- ✓Last commit 1d ago
- ✓4 active contributors
- ✓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
valvesoftware/proton →
Mixed signals — read the receipts
non-standard license (Other); no tests detected…
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.
- ⚠Non-standard license (Other) — review terms
- ⚠No CI workflows detected
- ⚠No test directory detected
- ✓Last commit today
- ✓12 active contributors
- ✓Distributed ownership (top contributor 36% of recent commits)
- ✓Other licensed
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
Signal-by-signal breakdown
| sigil | proton | |
|---|---|---|
| Stars | 6,776 | 31,365 |
| Last commit | 1mo ago | 1mo ago |
| License | GPL-3.0 | Other |
| Open issues | 4 | 5,073 |
| Has tests | ✓ | — |
| Has CI | ✓ | — |
| Test coverage | 100% | 0% |
| Dependency CVEs | No CVEs | No CVEs |
| Architecture grade | — | — |
| Cycles | — | — |
| Bottom-line | Mixed signals | Mixed signals |
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