Decision Workspace
memx-cdy vs memx vs memchr
Side-by-side comparison of Rust crates
52
memx-cdy
growingv0.2.0
The fast memory functions like a libc memcmp(), memchr(), memmem(), memcpy(), memset()
56
memx
growingv0.2.0
memory functions like libc memcmp(), memchr(), memmem(), memcpy(), memset()
72
memchr
stablev2.8.0
Provides extremely fast (uses SIMD on x86_64, aarch64 and wasm32) routines for 1, 2 or 3 byte search and single substring search.
Core Metrics
| memx-cdy | memx | memchr | |
|---|---|---|---|
| Health Score | 52 | 56 | 72 |
| Total Downloads | 39.8K | 371.2K | 842.6M |
| 30d Downloads | 440 | 117.3K | 58.6M |
| Dependents | 120 | 80 | 17.1K |
| Releases | 15 | 33 | 44 |
| Last Updated | 184d ago | 184d ago | 49d ago |
| Age | 4y 9m | 4y 10m | 10y 9m |
Health Breakdown
memx-cdy
Maintenance
10
Quality
14
Community
11
Popularity
5
Documentation
12
memx
Maintenance
11
Quality
16
Community
10
Popularity
7
Documentation
12
memchr
Maintenance
15
Quality
22
Community
12
Popularity
8
Documentation
15
Technical Details
| memx-cdy | memx | memchr | |
|---|---|---|---|
| Version | 0.2.0 | 0.2.0 | 2.8.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | Unlicense OR MIT |
| Dependencies | 2 | 5 | 3 |
| Crate Size | 11KB | 92KB | 98KB |
| Features | 3 | 6 | 7 |
| Yanked % | 6.7% | 3.0% | 2.3% |
| Edition | 2021 | 2021 | 2021 |
| MSRV | 1.65.0 | 1.65.0 | 1.61 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •memchr leads with a health score of 72/100, but none of the options score above 80.
- •memchr is depended on by 17.1K crates — strongest ecosystem trust.
- •memx-cdy, memx are pre-1.0 — API may change.