Decision Workspace
sparse_map vs index-utils vs generational-arena
Side-by-side comparison of Rust crates
38
sparse_map
experimentalv0.1.2
A sparse map with stable generational keys.
49
index-utils
growingv2.2.3
Utilities for working with indices
47
generational-arena
growingv0.2.9
A safe arena allocator that supports deletion without suffering from the ABA problem by using generational indices.
Core Metrics
| sparse_map | index-utils | generational-arena | |
|---|---|---|---|
| Health Score | 38 | 49 | 47 |
| Total Downloads | 148 | 16.3K | 7.8M |
| 30d Downloads | 38 | 119 | 302.5K |
| Dependents | 0 | 22 | 655 |
| Releases | 3 | 10 | 11 |
| Last Updated | 75d ago | 775d ago | 1040d ago |
| Age | 2m | 4y 8m | 7y 7m |
Health Breakdown
sparse_map
Maintenance
10
Quality
9
Community
6
Popularity
3
Documentation
10
index-utils
Maintenance
4
Quality
20
Community
10
Popularity
5
Documentation
10
generational-arena
Maintenance
4
Quality
12
Community
14
Popularity
8
Documentation
9
Technical Details
| sparse_map | index-utils | generational-arena | |
|---|---|---|---|
| Version | 0.1.2 | 2.2.3 | 0.2.9 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT OR Apache-2.0 | GPL-3.0-only | MPL-2.0 |
| Dependencies | 0 | 2 | 8 |
| Crate Size | 9KB | 17KB | 21KB |
| Features | 0 | 0 | 2 |
| Yanked % | 33.3% | 0.0% | 9.1% |
| Edition | 2024 | 2021 | 2018 |
| MSRV | — | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •index-utils leads with a health score of 49/100, but none of the options score above 80.
- •generational-arena has the most downloads (7.8M), suggesting wider adoption.
- •generational-arena is depended on by 655 crates — strongest ecosystem trust.
- •⚠ index-utils, generational-arena have not been updated in over a year.
- •sparse_map, generational-arena are pre-1.0 — API may change.