Decision Workspace
smox vs calf-vec vs smallvec
Side-by-side comparison of Rust crates
53
smox
experimentalv0.5.0
Box that stores small objects inline and bigger objects on the heap using Box, Rc or Arc, with CoW semantic
47
calf-vec
growingv0.3.1-beta
Small copy-on-write arrays, essentially combining `SmallVec` and `Cow`
70
smallvec
stablev1.15.1
'Small vector' optimization: store up to a small number of items on the stack
Core Metrics
| smox | calf-vec | smallvec | |
|---|---|---|---|
| Health Score | 53 | 47 | 70 |
| Total Downloads | 90 | 6.2K | 730.7M |
| 30d Downloads | 8 | 7 | 47.5M |
| Dependents | 0 | 0 | 51.1K |
| Releases | 6 | 4 | 76 |
| Last Updated | 56d ago | 1985d ago | 131d ago |
| Age | 1m | 5y 5m | 10y 11m |
Health Breakdown
smox
Maintenance
16
Quality
17
Community
6
Popularity
2
Documentation
12
calf-vec
Maintenance
9
Quality
16
Community
5
Popularity
5
Documentation
12
smallvec
Maintenance
14
Quality
17
Community
19
Popularity
8
Documentation
12
Technical Details
| smox | calf-vec | smallvec | |
|---|---|---|---|
| Version | 0.5.0 | 0.3.1-beta | 1.15.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT OR Apache-2.0 | MIT/Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 0 | 0 | 8 |
| Crate Size | 10KB | 11KB | 38KB |
| Features | 2 | 0 | 10 |
| Yanked % | 0.0% | 0.0% | 26.3% |
| Edition | 2024 | 2018 | 2018 |
| MSRV | 1.85.1 | — | — |
| Owners | 1 | 1 | 3 (team) |
Links
Quick Verdict
- •smallvec leads with a health score of 70/100, but none of the options score above 80.
- •smallvec is depended on by 51.1K crates — strongest ecosystem trust.
- •⚠ calf-vec has not been updated in over a year.
- •smox, calf-vec are pre-1.0 — API may change.