kevin-wayne/algs4 vs reactivex/rxandroid
reactivex/rxandroid shows stronger signals overall
As of June 2026, rxandroid shows healthier maintenance signals than algs4. rxandroid rates Healthy overall while algs4 rates Mixed. algs4 last saw a commit 5 months ago with 3+ active contributors, while rxandroid last saw a commit 3 months ago with 17+ active contributors. algs4 is GPL-3.0-licensed while rxandroid 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.
kevin-wayne/algs4 →
Slowing — last commit 4mo ago
copyleft license (GPL-3.0) — review compatibility; top contributor handles 98% of recent commits…
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.
- ⚠Slowing — last commit 4mo ago
- ⚠Small team — 3 contributors active in recent commits
- ⚠Single-maintainer risk — top contributor 98% of recent commits
- ⚠GPL-3.0 is copyleft — check downstream compatibility
- ⚠No CI workflows detected
- ⚠No test directory detected
- ✓Last commit 4mo ago
- ✓3 active contributors
- ✓GPL-3.0 licensed
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
reactivex/rxandroid →
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 61% of recent commits
- ✓Last commit 6w 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
| algs4 | rxandroid | |
|---|---|---|
| Stars | 7,523 | 19,975 |
| Last commit | 5mo ago | 3mo ago |
| License | GPL-3.0 | Apache-2.0 |
| Open issues | 25 | 1 |
| Has tests | — | ✓ |
| Has CI | — | ✓ |
| Test coverage | 0% | 100% |
| Dependency CVEs | No CVEs | No CVEs |
| Architecture grade | — | — |
| Cycles | — | — |
| Bottom-line | Mixed signals | Healthy signals |
Want the full analysis? kevin-wayne/algs4 · reactivex/rxandroid
Ask AI about kevin-wayne/algs4 vs reactivex/rxandroid
Open the chat with a comparison question pre-filled.