Decision Workspace
versal vs downcast-rs vs extension-trait
Side-by-side comparison of Rust crates
31
versal
experimentalv0.1.0
A trait library for better ergonomics.
65
downcast-rs
growingv2.0.2
Trait object downcasting support using only safe Rust. It supports type parameters, associated types, and type constraints.
57
extension-trait
growingv1.0.2
Macro to declare extension traits
Core Metrics
| versal | downcast-rs | extension-trait | |
|---|---|---|---|
| Health Score | 31 | 65 | 57 |
| Total Downloads | 702 | 102.2M | 459.8K |
| 30d Downloads | 18 | 7.2M | 32.5K |
| Dependents | 0 | 4.4K | 354 |
| Releases | 1 | 15 | 11 |
| Last Updated | 308d ago | 207d ago | 1103d ago |
| Age | 10m | 10y 3m | 8y 4m |
Health Breakdown
versal
Maintenance
3
Quality
15
Community
3
Popularity
3
Documentation
7
downcast-rs
Maintenance
8
Quality
23
Community
14
Popularity
8
Documentation
12
extension-trait
Maintenance
5
Quality
20
Community
12
Popularity
7
Documentation
13
Technical Details
| versal | downcast-rs | extension-trait | |
|---|---|---|---|
| Version | 0.1.0 | 2.0.2 | 1.0.2 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✓ Yes |
| License | Apache-2.0 | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 0 | 0 | 3 |
| Crate Size | 1KB | 13KB | 8KB |
| Features | 0 | 3 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2021 | 2021 |
| MSRV | — | 1.56 | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •downcast-rs leads with a health score of 65/100, but none of the options score above 80.
- •downcast-rs is depended on by 4.4K crates — strongest ecosystem trust.
- •⚠ extension-trait has not been updated in over a year.
- •versal is pre-1.0 — API may change.