Decision Workspace
kalk_cli vs kalker vs fend-core
Side-by-side comparison of Rust crates
39
kalk_cli
growingv0.5.4
A calculator that supports user-defined functions, variables and units, and can handle fairly ambiguous syntax.
59
kalker
stablev2.2.3
A calculator that supports user-defined functions, variables and units, and can handle fairly ambiguous syntax.
59
fend-core
growingv1.5.8
Arbitrary-precision unit-aware calculator
Core Metrics
| kalk_cli | kalker | fend-core | |
|---|---|---|---|
| Health Score | 39 | 59 | 59 |
| Total Downloads | 39.0K | 17.2K | 130.0K |
| 30d Downloads | 0 | 0 | 1.9K |
| Dependents | 0 | 0 | 124 |
| Releases | 31 | 12 | 68 |
| Last Updated | 1869d ago | 3d ago | 171d ago |
| Age | 6y 1m | 5y 1m | 5y 10m |
Health Breakdown
kalk_cli
Maintenance
6
Quality
13
Community
6
Popularity
5
Documentation
9
kalker
Maintenance
19
Quality
20
Community
6
Popularity
5
Documentation
9
fend-core
Maintenance
11
Quality
20
Community
12
Popularity
6
Documentation
10
Technical Details
| kalk_cli | kalker | fend-core | |
|---|---|---|---|
| Version | 0.5.4 | 2.2.3 | 1.5.8 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✓ Yes |
| License | MIT | MIT | MIT |
| Dependencies | 8 | 9 | 0 |
| Crate Size | 16KB | 24KB | 119KB |
| Features | 0 | 2 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2018 | 2018 | 2024 |
| MSRV | — | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •kalker leads with a health score of 59/100, but none of the options score above 80.
- •fend-core has the most downloads (130.0K), suggesting wider adoption.
- •fend-core is depended on by 124 crates — strongest ecosystem trust.
- •⚠ kalk_cli has not been updated in over a year.
- •kalk_cli is pre-1.0 — API may change.