Decision Workspace
specializer vs castaway vs try-specialize
Side-by-side comparison of Rust crates
50
specializer
growingv1.0.0
Limited safe specialization on stable Rust with builder-like pattern
54
castaway
growingv0.2.4
Safe, zero-cost downcasting for limited compile-time specialization.
50
try-specialize
growingv0.1.2
Zero-cost specialization in generic context on stable Rust
Core Metrics
| specializer | castaway | try-specialize | |
|---|---|---|---|
| Health Score | 50 | 54 | 50 |
| Total Downloads | 959 | 74.7M | 4.0K |
| 30d Downloads | 4 | 7.8M | 359 |
| Dependents | 0 | 343 | 4 |
| Releases | 2 | 8 | 3 |
| Last Updated | 288d ago | 258d ago | 293d ago |
| Age | 10m | 4y 9m | 1y 5m |
Health Breakdown
specializer
Maintenance
7
Quality
18
Community
6
Popularity
4
Documentation
15
castaway
Maintenance
7
Quality
17
Community
13
Popularity
8
Documentation
9
try-specialize
Maintenance
7
Quality
16
Community
8
Popularity
4
Documentation
15
Technical Details
| specializer | castaway | try-specialize | |
|---|---|---|---|
| Version | 1.0.0 | 0.2.4 | 0.1.2 |
| Stable (≥1.0) | ✓ Yes | ✗ No | ✗ No |
| License | Apache-2.0 OR BSL-1.0 OR MIT | MIT | MIT OR Apache-2.0 |
| Dependencies | 1 | 2 | 11 |
| Crate Size | 14KB | 13KB | 62KB |
| Features | 0 | 3 | 7 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2018 | 2021 |
| MSRV | 1.85 | — | 1.82.0 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •castaway leads with a health score of 54/100, but none of the options score above 80.
- •castaway is depended on by 343 crates — strongest ecosystem trust.
- •castaway, try-specialize are pre-1.0 — API may change.