Decision Workspace
gj vs promisery vs async-event
Side-by-side comparison of Rust crates
44
gj
growingv0.2.0
Event loop and promises.
57
promisery
growingv2.0.1
A JavaScript-inspired, ergonomic, and composable Promise type for Rust, supporting background work, chaining, and error handling with Result.
50
async-event
growingv0.2.1
An efficient async condition variable for lock-free algorithms.
Core Metrics
| gj | promisery | async-event | |
|---|---|---|---|
| Health Score | 44 | 57 | 50 |
| Total Downloads | 77.9K | 2.1K | 1.5M |
| 30d Downloads | 91 | 25 | 30.0K |
| Dependents | 25 | 1 | 208 |
| Releases | 21 | 5 | 3 |
| Last Updated | 3624d ago | 266d ago | 662d ago |
| Age | 10y 10m | 8m | 2y 8m |
Health Breakdown
gj
Maintenance
4
Quality
16
Community
7
Popularity
6
Documentation
11
promisery
Maintenance
15
Quality
18
Community
7
Popularity
4
Documentation
13
async-event
Maintenance
5
Quality
14
Community
12
Popularity
7
Documentation
12
Technical Details
| gj | promisery | async-event | |
|---|---|---|---|
| Version | 0.2.0 | 2.0.1 | 0.2.1 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 0 | 2 | 5 |
| Crate Size | 16KB | 9KB | 26KB |
| Features | 0 | 0 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | — | 2021 | 2021 |
| MSRV | — | — | 1.64 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •promisery leads with a health score of 57/100, but none of the options score above 80.
- •async-event has the most downloads (1.5M), suggesting wider adoption.
- •async-event is depended on by 208 crates — strongest ecosystem trust.
- •⚠ gj, async-event have not been updated in over a year.
- •gj, async-event are pre-1.0 — API may change.