Decision Workspace
typed-arena vs indextree vs slotmap-careful
Side-by-side comparison of Rust crates
63
typed-arena
growingv2.0.2
The arena, a fast but limited type of allocator
77
indextree
stablev4.8.0
Arena based tree structure by using indices instead of reference counted pointers
66
slotmap-careful
growingv0.7.0
Wrap the slotmap crate and prevent key reuse
Core Metrics
| typed-arena | indextree | slotmap-careful | |
|---|---|---|---|
| Health Score | 63 | 77 | 66 |
| Total Downloads | 54.3M | 1.9M | 172.6K |
| 30d Downloads | 3.4M | 84.4K | 27.4K |
| Dependents | 2.7K | 721 | 102 |
| Releases | 15 | 30 | 13 |
| Last Updated | 1173d ago | 3d ago | 24d ago |
| Age | 10y 11m | 9y 3m | 1y 6m |
Health Breakdown
typed-arena
Maintenance
4
Quality
22
Community
18
Popularity
8
Documentation
11
indextree
Maintenance
19
Quality
23
Community
13
Popularity
7
Documentation
15
slotmap-careful
Maintenance
20
Quality
15
Community
13
Popularity
6
Documentation
12
Technical Details
| typed-arena | indextree | slotmap-careful | |
|---|---|---|---|
| Version | 2.0.2 | 4.8.0 | 0.7.0 |
| Stable (≥1.0) | ✓ Yes | ✓ Yes | ✗ No |
| License | MIT | MIT | MIT OR Apache-2.0 |
| Dependencies | 1 | 3 | 6 |
| Crate Size | 12KB | 27KB | 13KB |
| Features | 2 | 5 | 1 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | — | 2024 | 2024 |
| MSRV | — | 1.85.0 | 1.89 |
| Owners | 5 | 1 | 4 |
Links
Quick Verdict
- •indextree leads with a health score of 77/100, but none of the options score above 80.
- •typed-arena has the most downloads (54.3M), suggesting wider adoption.
- •typed-arena is depended on by 2.7K crates — strongest ecosystem trust.
- •⚠ typed-arena has not been updated in over a year.
- •slotmap-careful is pre-1.0 — API may change.