Decision Workspace
futures-concurrency vs shuttle vs saa
Side-by-side comparison of Rust crates
71
futures-concurrency
growingv7.7.1
Structured concurrency operations for async Rust
63
shuttle
growingv0.9.1
A library for testing concurrent Rust code
63
saa
growingv5.6.0
Word-sized low-level synchronization primitives providing both asynchronous and synchronous interfaces.
Core Metrics
| futures-concurrency | shuttle | saa | |
|---|---|---|---|
| Health Score | 71 | 63 | 63 |
| Total Downloads | 7.4M | 4.4M | 2.0M |
| 30d Downloads | 623.9K | 257.8K | 236.5K |
| Dependents | 949 | 971 | 76 |
| Releases | 31 | 22 | 49 |
| Last Updated | 176d ago | 83d ago | 62d ago |
| Age | 4y 10m | 5y 9m | 11m |
Health Breakdown
futures-concurrency
Maintenance
11
Quality
20
Community
17
Popularity
8
Documentation
15
shuttle
Maintenance
14
Quality
12
Community
19
Popularity
8
Documentation
10
saa
Maintenance
15
Quality
14
Community
11
Popularity
8
Documentation
15
Technical Details
| futures-concurrency | shuttle | saa | |
|---|---|---|---|
| Version | 7.7.1 | 0.9.1 | 5.6.0 |
| Stable (≥1.0) | ✓ Yes | ✗ No | ✓ Yes |
| License | MIT OR Apache-2.0 | Apache-2.0 | Apache-2.0 |
| Dependencies | 14 | 26 | 5 |
| Crate Size | 83KB | 180KB | 42KB |
| Features | 3 | 4 | 2 |
| Yanked % | 0.0% | 0.0% | 28.6% |
| Edition | 2021 | 2021 | 2024 |
| MSRV | 1.81.0 | — | 1.85.0 |
| Owners | 3 | 3 (team) | 1 |
Links
Quick Verdict
- •futures-concurrency leads with a health score of 71/100, but none of the options score above 80.
- •shuttle is depended on by 971 crates — strongest ecosystem trust.
- •shuttle is pre-1.0 — API may change.