Decision Workspace
sp-im vs imbl vs im
Side-by-side comparison of Rust crates
42
sp-im
growingv0.3.0
Immutable datatypes for no_std use within Substrate
62
imbl
stablev7.0.0
Immutable collection datatypes
55
im
growingv15.1.0
Immutable collection datatypes
Core Metrics
| sp-im | imbl | im | |
|---|---|---|---|
| Health Score | 42 | 62 | 55 |
| Total Downloads | 6.5K | 1.7M | 23.9M |
| 30d Downloads | 72 | 197.0K | 1.1M |
| Dependents | 2 | 673 | 3.4K |
| Releases | 4 | 13 | 36 |
| Last Updated | 1621d ago | 61d ago | 1428d ago |
| Age | 4y 7m | 4y 7m | 8y 11m |
Health Breakdown
sp-im
Maintenance
3
Quality
13
Community
9
Popularity
5
Documentation
12
imbl
Maintenance
13
Quality
15
Community
13
Popularity
7
Documentation
14
im
Maintenance
6
Quality
13
Community
14
Popularity
8
Documentation
14
Technical Details
| sp-im | imbl | im | |
|---|---|---|---|
| Version | 0.3.0 | 7.0.0 | 15.1.0 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✓ Yes |
| License | MIT | MPL-2.0+ | MPL-2.0+ |
| Dependencies | 20 | 25 | 20 |
| Crate Size | 102KB | 139KB | 117KB |
| Features | 2 | 4 | 1 |
| Yanked % | 0.0% | 7.7% | 11.1% |
| Edition | 2018 | 2018 | 2018 |
| MSRV | — | 1.85 | 1.46.0 |
| Owners | 2 | 1 | 1 |
Links
Quick Verdict
- •imbl leads with a health score of 62/100, but none of the options score above 80.
- •im has the most downloads (23.9M), suggesting wider adoption.
- •im is depended on by 3.4K crates — strongest ecosystem trust.
- •⚠ sp-im, im have not been updated in over a year.
- •sp-im is pre-1.0 — API may change.