Decision Workspace
backdrop vs sigma-bounded vs smallbox
Side-by-side comparison of Rust crates
51
backdrop
growingv0.1.11
Drop your large or complex objects in the background with Backdrop! (later, on another thread, or both! Fully customizable! Tokio supported!)
56
sigma-bounded
experimentalv0.1.3
Bounded Vec, String, and map types abstracting alloc vs heapless
49
smallbox
growingv0.8.8
`Small Box` optimization: store small item on stack and fallback to heap for large item.
Core Metrics
| backdrop | sigma-bounded | smallbox | |
|---|---|---|---|
| Health Score | 51 | 56 | 49 |
| Total Downloads | 16.0K | 164 | 1.2M |
| 30d Downloads | 0 | 0 | 34.7K |
| Dependents | 6 | 4 | 209 |
| Releases | 12 | 2 | 26 |
| Last Updated | 1230d ago | 7d ago | 376d ago |
| Age | 3y 4m | 8d | 9y 1m |
Health Breakdown
backdrop
Maintenance
12
Quality
16
Community
8
Popularity
5
Documentation
10
sigma-bounded
Maintenance
14
Quality
16
Community
8
Popularity
3
Documentation
15
smallbox
Maintenance
5
Quality
11
Community
11
Popularity
7
Documentation
15
Technical Details
| backdrop | sigma-bounded | smallbox | |
|---|---|---|---|
| Version | 0.1.11 | 0.1.3 | 0.8.8 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT | MIT OR Apache-2.0 | MIT |
| Dependencies | 4 | 1 | 2 |
| Crate Size | 16KB | 6KB | 16KB |
| Features | 4 | 3 | 4 |
| Yanked % | 0.0% | 0.0% | 34.6% |
| Edition | 2021 | 2024 | 2021 |
| MSRV | — | 1.90.0 | 1.80 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •sigma-bounded leads with a health score of 56/100, but none of the options score above 80.
- •smallbox has the most downloads (1.2M), suggesting wider adoption.
- •smallbox is depended on by 209 crates — strongest ecosystem trust.
- •⚠ backdrop, smallbox have not been updated in over a year.