Decision Workspace
ittybitty vs smallbitvec vs fixedbitset
Side-by-side comparison of Rust crates
51
ittybitty
growingv0.4.0
An itty bitty bitset to hold your itty bitty bits.
64
smallbitvec
growingv2.6.0
A bit vector optimized for size and inline storage
59
fixedbitset
growingv0.5.7
FixedBitSet is a simple bitset collection
Core Metrics
| ittybitty | smallbitvec | fixedbitset | |
|---|---|---|---|
| Health Score | 51 | 64 | 59 |
| Total Downloads | 2.5K | 2.8M | 310.7M |
| 30d Downloads | 21 | 202.4K | 24.7M |
| Dependents | 0 | 150 | 2.0K |
| Releases | 4 | 20 | 30 |
| Last Updated | 19d ago | 406d ago | 712d ago |
| Age | 1y 7m | 8y 6m | 10y 12m |
Health Breakdown
ittybitty
Maintenance
16
Quality
15
Community
6
Popularity
4
Documentation
10
smallbitvec
Maintenance
5
Quality
20
Community
16
Popularity
8
Documentation
15
fixedbitset
Maintenance
4
Quality
13
Community
19
Popularity
8
Documentation
15
Technical Details
| ittybitty | smallbitvec | fixedbitset | |
|---|---|---|---|
| Version | 0.4.0 | 2.6.0 | 0.5.7 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 1 | 3 | 2 |
| Crate Size | 13KB | 15KB | 27KB |
| Features | 0 | 0 | 2 |
| Yanked % | 0.0% | 0.0% | 10.0% |
| Edition | 2024 | 2021 | 2021 |
| MSRV | — | 1.56 | 1.56 |
| Owners | 1 | 2 (team) | 4 (team) |
Links
Quick Verdict
- •smallbitvec leads with a health score of 64/100, but none of the options score above 80.
- •fixedbitset has the most downloads (310.7M), suggesting wider adoption.
- •fixedbitset is depended on by 2.0K crates — strongest ecosystem trust.
- •⚠ smallbitvec, fixedbitset have not been updated in over a year.
- •ittybitty, fixedbitset are pre-1.0 — API may change.