Decision Workspace
arena-lib vs mtb-entity-slab vs thunderdome
Side-by-side comparison of Rust crates
60
arena-lib
experimentalv1.0.0
Typed memory arena and slab allocator library. Generational indices, typed arenas (one allocation per type), interned strings, and bump allocation. Zero unsafe leakage into user code.
54
mtb-entity-slab
experimentalv0.2.4
Slab-style entity storage: stable IDs, internal mutability; not a full ECS.
52
thunderdome
growingv0.6.1
Fast arena allocator with compact generational indices
Core Metrics
| arena-lib | mtb-entity-slab | thunderdome | |
|---|---|---|---|
| Health Score | 60 | 54 | 52 |
| Total Downloads | 65 | 168 | 804.7K |
| 30d Downloads | 0 | 0 | 37.9K |
| Dependents | 0 | 0 | 560 |
| Releases | 5 | 6 | 12 |
| Last Updated | 4d ago | 65d ago | 1066d ago |
| Age | 4d | 6m | 5y 8m |
Health Breakdown
arena-lib
Maintenance
19
Quality
18
Community
6
Popularity
2
Documentation
15
mtb-entity-slab
Maintenance
16
Quality
16
Community
6
Popularity
3
Documentation
13
thunderdome
Maintenance
5
Quality
18
Community
10
Popularity
7
Documentation
12
Technical Details
| arena-lib | mtb-entity-slab | thunderdome | |
|---|---|---|---|
| Version | 1.0.0 | 0.2.4 | 0.6.1 |
| Stable (≥1.0) | ✓ Yes | ✗ No | ✗ No |
| License | Apache-2.0 OR MIT | MIT | MIT OR Apache-2.0 |
| Dependencies | 3 | 3 | 0 |
| Crate Size | 67KB | 46KB | 19KB |
| Features | 2 | 3 | 2 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2024 | 2018 |
| MSRV | 1.85 | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •arena-lib leads with a health score of 60/100, but none of the options score above 80.
- •thunderdome has the most downloads (804.7K), suggesting wider adoption.
- •thunderdome is depended on by 560 crates — strongest ecosystem trust.
- •⚠ thunderdome has not been updated in over a year.
- •mtb-entity-slab, thunderdome are pre-1.0 — API may change.