Decision Workspace
memmap3-macros vs memmap3 vs memmap2
Side-by-side comparison of Rust crates
40
memmap3-macros
experimentalv0.1.0
Procedural macros for memmap3
41
memmap3
experimentalv0.1.0
Safe, zero-copy memory-mapped I/O. Drop-in replacement for memmap2 with persistent structs and zero unsafe in user code.
66
memmap2
growingv0.9.10
Cross-platform Rust API for memory-mapped file IO
Core Metrics
| memmap3-macros | memmap3 | memmap2 | |
|---|---|---|---|
| Health Score | 40 | 41 | 66 |
| Total Downloads | 1.8K | 1.7K | 212.7M |
| 30d Downloads | 362 | 350 | 15.4M |
| Dependents | 1 | 8 | 14.4K |
| Releases | 1 | 1 | 35 |
| Last Updated | 181d ago | 181d ago | 40d ago |
| Age | 6m | 6m | 6y 2m |
Health Breakdown
memmap3-macros
Maintenance
5
Quality
14
Community
7
Popularity
4
Documentation
10
memmap3
Maintenance
5
Quality
14
Community
6
Popularity
4
Documentation
12
memmap2
Maintenance
16
Quality
11
Community
16
Popularity
8
Documentation
15
Technical Details
| memmap3-macros | memmap3 | memmap2 | |
|---|---|---|---|
| Version | 0.1.0 | 0.1.0 | 0.9.10 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 3 | 9 | 4 |
| Crate Size | 12KB | 97KB | 35KB |
| Features | 0 | 2 | 0 |
| Yanked % | 0.0% | 0.0% | 5.7% |
| Edition | 2024 | 2024 | 2021 |
| MSRV | — | 1.89 | 1.63 |
| Owners | 1 | 1 | 4 |
Links
Quick Verdict
- •memmap2 leads with a health score of 66/100, but none of the options score above 80.
- •memmap2 is depended on by 14.4K crates — strongest ecosystem trust.