Decision Workspace
concurrent_arena vs slotmap-careful vs slotmap
Side-by-side comparison of Rust crates
46
concurrent_arena
growingv0.1.11
u32 concurrent insertion/removal arena that returns ArenaArc
66
slotmap-careful
growingv0.7.0
Wrap the slotmap crate and prevent key reuse
59
slotmap
growingv1.1.1
Slotmap data structure
Core Metrics
| concurrent_arena | slotmap-careful | slotmap | |
|---|---|---|---|
| Health Score | 46 | 66 | 59 |
| Total Downloads | 1.9M | 172.6K | 60.9M |
| 30d Downloads | 51.4K | 27.4K | 5.5M |
| Dependents | 44 | 102 | 4.0K |
| Releases | 12 | 13 | 21 |
| Last Updated | 290d ago | 24d ago | 111d ago |
| Age | 4y 3m | 1y 6m | 7y 9m |
Health Breakdown
concurrent_arena
Maintenance
6
Quality
9
Community
12
Popularity
8
Documentation
11
slotmap-careful
Maintenance
20
Quality
15
Community
13
Popularity
6
Documentation
12
slotmap
Maintenance
10
Quality
15
Community
15
Popularity
8
Documentation
11
Technical Details
| concurrent_arena | slotmap-careful | slotmap | |
|---|---|---|---|
| Version | 0.1.11 | 0.7.0 | 1.1.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT | MIT OR Apache-2.0 | Zlib |
| Dependencies | 5 | 6 | 7 |
| Crate Size | 15KB | 13KB | 62KB |
| Features | 1 | 1 | 3 |
| Yanked % | 58.3% | 0.0% | 71.4% |
| Edition | 2018 | 2024 | 2018 |
| MSRV | 1.79 | 1.89 | 1.58.0 |
| Owners | 2 | 4 | 1 |
Links
Quick Verdict
- •slotmap-careful leads with a health score of 66/100, but none of the options score above 80.
- •slotmap has the most downloads (60.9M), suggesting wider adoption.
- •slotmap is depended on by 4.0K crates — strongest ecosystem trust.
- •concurrent_arena, slotmap-careful are pre-1.0 — API may change.