Decision Workspace
formally-cli vs smtkit vs formally
Side-by-side comparison of Rust crates
36
formally-cli
experimentalv0.2025.12
the open-source formal methods toolchain - command-line interface
47
smtkit
experimentalv0.1.1
Facade crate for SMT constraint IR + SMT-LIB backends
44
formally
growingv0.2025.121
the open-source formal methods toolchain
Core Metrics
| formally-cli | smtkit | formally | |
|---|---|---|---|
| Health Score | 36 | 47 | 44 |
| Total Downloads | 21 | 62 | 817 |
| 30d Downloads | 3 | 17 | 26 |
| Dependents | 0 | 0 | 1 |
| Releases | 1 | 2 | 3 |
| Last Updated | 98d ago | 19d ago | 97d ago |
| Age | 3m | 1m | 1y |
Health Breakdown
formally-cli
Maintenance
8
Quality
14
Community
4
Popularity
2
Documentation
8
smtkit
Maintenance
13
Quality
16
Community
3
Popularity
2
Documentation
13
formally
Maintenance
12
Quality
16
Community
5
Popularity
3
Documentation
8
Technical Details
| formally-cli | smtkit | formally | |
|---|---|---|---|
| Version | 0.2025.12 | 0.1.1 | 0.2025.121 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | non-standard | MIT OR Apache-2.0 | non-standard |
| Dependencies | 2 | 5 | 5 |
| Crate Size | 9KB | 24KB | 12KB |
| Features | 0 | 6 | 3 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2021 | 2024 |
| MSRV | — | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •smtkit leads with a health score of 47/100, but none of the options score above 80.
- •formally has the most downloads (817), suggesting wider adoption.