Decision Workspace
observe vs callbag vs rsconnect
Side-by-side comparison of Rust crates
44
observe
growingv2.0.0
Rust declarative observables inspired by MobX
44
callbag
growingv0.14.0
Rust implementation of the callbag spec for reactive/iterable programming
37
rsconnect
growingv0.2.2
Fine-grained reactivity in Rust
Core Metrics
| observe | callbag | rsconnect | |
|---|---|---|---|
| Health Score | 44 | 44 | 37 |
| Total Downloads | 6.4K | 18.5K | 3.9K |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 1 | 0 | 0 |
| Releases | 6 | 14 | 3 |
| Last Updated | 174d ago | 1641d ago | 1464d ago |
| Age | 6y | 4y 8m | 4y 2m |
Health Breakdown
observe
Maintenance
7
Quality
18
Community
4
Popularity
5
Documentation
10
callbag
Maintenance
5
Quality
16
Community
6
Popularity
5
Documentation
12
rsconnect
Maintenance
4
Quality
16
Community
3
Popularity
4
Documentation
10
Technical Details
| observe | callbag | rsconnect | |
|---|---|---|---|
| Version | 2.0.0 | 0.14.0 | 0.2.2 |
| Stable (≥1.0) | ✓ Yes | ✗ No | ✗ No |
| License | MIT | MIT OR Apache-2.0 | MIT |
| Dependencies | 11 | 16 | 1 |
| Crate Size | 21KB | 42KB | 11KB |
| Features | 0 | 16 | 1 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2021 | 2021 |
| MSRV | — | 1.58 | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •observe leads with a health score of 44/100, but none of the options score above 80.
- •callbag has the most downloads (18.5K), suggesting wider adoption.
- •⚠ callbag, rsconnect have not been updated in over a year.
- •callbag, rsconnect are pre-1.0 — API may change.