google/flatbuffers vs protocolbuffers/protobuf
google/flatbuffers shows stronger signals overall
As of September 2026, flatbuffers shows healthier maintenance signals than protobuf. flatbuffers rates Healthy overall while protobuf rates Mixed. flatbuffers last saw a commit 1 month ago with 52+ active contributors, while protobuf was committed to 2 weeks ago with 17+ active contributors. 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.
google/flatbuffers
Healthy across all four use cases
No blocking maintenance, license, or known-CVE signals were found; still verify the package version and fit.
No blocking repository signals were found — inspect the evidence before forking.
Documented and popular — useful reference codebase to read through.
No blocking repository-level signals were found; deployment review is still required.
- ✓Last commit 3w ago
- ✓52+ active contributors
- ✓Distributed ownership (top contributor 16% of recent commits)
- ✓Apache-2.0 licensed
- ✓CI configured
- ✓Tests present
Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against dependency CVEs from deps.dev and OpenSSF Scorecard
protocolbuffers/protobuf
Evidence incomplete — review before adopting
license evidence incomplete; dependency CVE scan unavailable
license evidence incomplete
Documented and popular — useful reference codebase to read through.
Scorecard "Token-Permissions" is 0/10; license evidence incomplete…
- ⚠Scorecard: dangerous CI workflow (0/10)
- ⚠Could not verify license from the available repository evidence
- ✓Last commit today
- ✓17 active contributors
- ✓Distributed ownership (top contributor 46% of recent commits)
- ✓CI configured
- ✓Tests present
Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against OpenSSF Scorecard
Signal-by-signal breakdown
| flatbuffers | protobuf | |
|---|---|---|
| Stars | 26,422 | 71,879 |
| Last commit | 1mo ago | 15d ago |
| License | Apache-2.0 | Unknown |
| Open issues | 275 | 321 |
| Has tests | ✓ | ✓ |
| Has CI | ✓ | ✓ |
| Test coverage | 100% | 31% |
| Dependency CVEs | No CVEs | No CVEs |
| Architecture grade | — | — |
| Cycles | — | — |
| Bottom-line | Healthy signals | Mixed signals |
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