Decision Workspace
colosseum vs blink-alloc vs concurrent-slotmap
Side-by-side comparison of Rust crates
42
colosseum
growingv0.2.2
A variety of arena allocators for Rust, including thread-safe arenas.
52
blink-alloc
growingv0.4.0
Fast, concurrent, arena-based allocator with drop support
47
concurrent-slotmap
growingv0.2.0-alpha.1
A lock-free concurrent slotmap
Core Metrics
| colosseum | blink-alloc | concurrent-slotmap | |
|---|---|---|---|
| Health Score | 42 | 52 | 47 |
| Total Downloads | 378.1K | 132.2K | 5.1K |
| 30d Downloads | 15.3K | 19.2K | 0 |
| Dependents | 29 | 115 | 2 |
| Releases | 5 | 12 | 3 |
| Last Updated | 3220d ago | 214d ago | 353d ago |
| Age | 9y 1m | 3y 4m | 1y 10m |
Health Breakdown
colosseum
Maintenance
3
Quality
11
Community
10
Popularity
7
Documentation
11
blink-alloc
Maintenance
9
Quality
13
Community
12
Popularity
6
Documentation
12
concurrent-slotmap
Maintenance
7
Quality
9
Community
12
Popularity
4
Documentation
15
Technical Details
| colosseum | blink-alloc | concurrent-slotmap | |
|---|---|---|---|
| Version | 0.2.2 | 0.4.0 | 0.2.0-alpha.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT/Apache-2.0 | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 0 | 4 | 3 |
| Crate Size | 8KB | 40KB | 29KB |
| Features | 0 | 5 | 0 |
| Yanked % | 20.0% | 16.7% | 33.3% |
| Edition | — | 2018 | 2021 |
| MSRV | — | — | 1.65 |
| Owners | 1 | 1 | 4 (team) |
Links
Quick Verdict
- •blink-alloc leads with a health score of 52/100, but none of the options score above 80.
- •colosseum has the most downloads (378.1K), suggesting wider adoption.
- •blink-alloc is depended on by 115 crates — strongest ecosystem trust.
- •⚠ colosseum has not been updated in over a year.