Decision Workspace
fastr vs compact_str vs ecow
Side-by-side comparison of Rust crates
34
fastr
growingv0.0.0
Fast copy-on-write strings with small inline string optimization.
52
compact_str
growingv0.9.0
A memory efficient string type that transparently stores strings on the stack, when possible
63
ecow
growingv0.2.6
Compact, clone-on-write vector and string.
Core Metrics
| fastr | compact_str | ecow | |
|---|---|---|---|
| Health Score | 34 | 52 | 63 |
| Total Downloads | 1.6K | 78.3M | 2.2M |
| 30d Downloads | 3 | 9.8M | 412.7K |
| Dependents | 0 | 5.1K | 1.2K |
| Releases | 1 | 20 | 10 |
| Last Updated | 1390d ago | 396d ago | 235d ago |
| Age | 3y 9m | 4y 6m | 3y |
Health Breakdown
fastr
Maintenance
1
Quality
16
Community
6
Popularity
4
Documentation
7
compact_str
Maintenance
8
Quality
11
Community
15
Popularity
8
Documentation
10
ecow
Maintenance
12
Quality
17
Community
14
Popularity
8
Documentation
12
Technical Details
| fastr | compact_str | ecow | |
|---|---|---|---|
| Version | 0.0.0 | 0.9.0 | 0.2.6 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | MIT | MIT OR Apache-2.0 |
| Dependencies | 0 | 28 | 2 |
| Crate Size | 6KB | 72KB | 30KB |
| Features | 0 | 17 | 2 |
| Yanked % | 0.0% | 15.0% | 0.0% |
| Edition | 2021 | 2021 | 2021 |
| MSRV | — | — | 1.73 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •ecow leads with a health score of 63/100, but none of the options score above 80.
- •compact_str has the most downloads (78.3M), suggesting wider adoption.
- •compact_str is depended on by 5.1K crates — strongest ecosystem trust.
- •⚠ fastr, compact_str have not been updated in over a year.