Decision Workspace
mewt vs mutatis vs dev-mutate
Side-by-side comparison of Rust crates
47
mewt
growingv3.1.0
Mutation testing framework with multi-language support
57
mutatis
growingv0.5.2
`mutatis` is a library for writing custom, structure-aware test-case mutators for fuzzers in Rust.
52
dev-mutate
experimentalv0.9.2
Mutation testing for Rust. Wraps cargo-mutants: kill rate, surviving-mutant evidence, kill-rate threshold gating. Detects tests that pass without asserting. Part of the dev-* verification collection.
Core Metrics
| mewt | mutatis | dev-mutate | |
|---|---|---|---|
| Health Score | 47 | 57 | 52 |
| Total Downloads | 257 | 495.6K | 32 |
| 30d Downloads | 0 | 58.2K | 0 |
| Dependents | 0 | 0 | 6 |
| Releases | 6 | 10 | 2 |
| Last Updated | 35d ago | 26d ago | 13d ago |
| Age | 6m | 1y 9m | 14d |
Health Breakdown
mewt
Maintenance
18
Quality
11
Community
5
Popularity
3
Documentation
10
mutatis
Maintenance
16
Quality
17
Community
5
Popularity
7
Documentation
12
dev-mutate
Maintenance
13
Quality
14
Community
8
Popularity
2
Documentation
15
Technical Details
| mewt | mutatis | dev-mutate | |
|---|---|---|---|
| Version | 3.1.0 | 0.5.2 | 0.9.2 |
| Stable (≥1.0) | ✓ Yes | ✗ No | ✗ No |
| License | AGPL-3.0 | MIT OR Apache-2.0 | Apache-2.0 |
| Dependencies | 29 | 6 | 4 |
| Crate Size | 3.5MB | 68KB | 31KB |
| Features | 0 | 5 | 1 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2021 | 2021 |
| MSRV | — | 1.91.0 | 1.85 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •mutatis leads with a health score of 57/100, but none of the options score above 80.
- •mutatis, dev-mutate are pre-1.0 — API may change.