Decision Workspace
c8str vs simdutf8 vs ustr
Side-by-side comparison of Rust crates
50
c8str
growingv0.2.1
String types that are both utf-8 and null terminated
58
simdutf8
growingv0.1.5
SIMD-accelerated UTF-8 validation.
56
ustr
growingv1.1.0
Fast, FFI-friendly string interning.
Core Metrics
| c8str | simdutf8 | ustr | |
|---|---|---|---|
| Health Score | 50 | 58 | 56 |
| Total Downloads | 3.8K | 107.6M | 1.8M |
| 30d Downloads | 25 | 10.4M | 137.0K |
| Dependents | 0 | 2.5K | 525 |
| Releases | 5 | 9 | 15 |
| Last Updated | 228d ago | 551d ago | 517d ago |
| Age | 1y 8m | 4y 11m | 6y 4m |
Health Breakdown
c8str
Maintenance
7
Quality
18
Community
6
Popularity
4
Documentation
15
simdutf8
Maintenance
4
Quality
19
Community
15
Popularity
8
Documentation
12
ustr
Maintenance
6
Quality
17
Community
13
Popularity
7
Documentation
13
Technical Details
| c8str | simdutf8 | ustr | |
|---|---|---|---|
| Version | 0.2.1 | 0.1.5 | 1.1.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | Zlib OR MIT OR Apache-2.0 | MIT OR Apache-2.0 | BSD-2-Clause-Patent |
| Dependencies | 0 | 0 | 12 |
| Crate Size | 15KB | 28KB | 351KB |
| Features | 4 | 6 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2018 | 2021 |
| MSRV | 1.81 | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •simdutf8 leads with a health score of 58/100, but none of the options score above 80.
- •simdutf8 is depended on by 2.5K crates — strongest ecosystem trust.
- •⚠ simdutf8, ustr have not been updated in over a year.
- •c8str, simdutf8 are pre-1.0 — API may change.