Decision Workspace
fs4 vs fs2 vs fs3
Side-by-side comparison of Rust crates
67
fs4
stablev1.1.0
No libc, pure Rust cross-platform file locks. Original fs2, now supports async and replace libc by rustix.
51
fs2
growingv0.4.3
Cross-platform file locks and file duplication.
47
fs3
growingv0.5.0
Cross-platform file locks and file duplication.
Core Metrics
| fs4 | fs2 | fs3 | |
|---|---|---|---|
| Health Score | 67 | 51 | 47 |
| Total Downloads | 52.9M | 70.0M | 1.7M |
| 30d Downloads | 3.7M | 2.8M | 61.7K |
| Dependents | 3.5K | 12.8K | 690 |
| Releases | 32 | 12 | 2 |
| Last Updated | 76d ago | 3110d ago | 2295d ago |
| Age | 4y 6m | 10y 10m | 6y 3m |
Health Breakdown
fs4
Maintenance
15
Quality
14
Community
15
Popularity
8
Documentation
15
fs2
Maintenance
5
Quality
15
Community
12
Popularity
8
Documentation
11
fs3
Maintenance
3
Quality
14
Community
11
Popularity
7
Documentation
12
Technical Details
| fs4 | fs2 | fs3 | |
|---|---|---|---|
| Version | 1.1.0 | 0.4.3 | 0.5.0 |
| Stable (≥1.0) | ✓ Yes | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | MIT/Apache-2.0 | MIT/Apache-2.0 |
| Dependencies | 13 | 3 | 4 |
| Crate Size | 45KB | 13KB | 13KB |
| Features | 9 | 0 | 0 |
| Yanked % | 12.5% | 0.0% | 0.0% |
| Edition | 2021 | — | 2018 |
| MSRV | 1.75.0 | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •fs4 leads with a health score of 67/100, but none of the options score above 80.
- •fs2 has the most downloads (70.0M), suggesting wider adoption.
- •fs2 is depended on by 12.8K crates — strongest ecosystem trust.
- •⚠ fs2, fs3 have not been updated in over a year.
- •fs2, fs3 are pre-1.0 — API may change.