Decision Workspace
cron-when vs job_scheduler_ng vs cron-parser
Side-by-side comparison of Rust crates
49
cron-when
experimentalv0.4.2
A CLI tool to parse cron expressions and display next execution times with human-readable durations
61
job_scheduler_ng
growingv2.4.0
A simple cron-like job scheduling library for Rust (Updated since 2022).
58
cron-parser
growingv0.11.2
Library for parsing cron expressions with timezone support.
Core Metrics
| cron-when | job_scheduler_ng | cron-parser | |
|---|---|---|---|
| Health Score | 49 | 61 | 58 |
| Total Downloads | 245 | 251.0K | 735.1K |
| 30d Downloads | 10 | 10.6K | 140.0K |
| Dependents | 0 | 22 | 82 |
| Releases | 8 | 9 | 30 |
| Last Updated | 49d ago | 165d ago | 100d ago |
| Age | 4m | 3y 10m | 6y 4m |
Health Breakdown
cron-when
Maintenance
16
Quality
11
Community
6
Popularity
3
Documentation
13
job_scheduler_ng
Maintenance
10
Quality
21
Community
9
Popularity
6
Documentation
15
cron-parser
Maintenance
13
Quality
14
Community
11
Popularity
7
Documentation
13
Technical Details
| cron-when | job_scheduler_ng | cron-parser | |
|---|---|---|---|
| Version | 0.4.2 | 2.4.0 | 0.11.2 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | BSD-3-Clause | MIT OR Apache-2.0 | BSD-3-Clause |
| Dependencies | 20 | 5 | 4 |
| Crate Size | 59KB | 16KB | 25KB |
| Features | 0 | 3 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2021 | 2024 |
| MSRV | — | 1.83.0 | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •job_scheduler_ng leads with a health score of 61/100, but none of the options score above 80.
- •cron-parser has the most downloads (735.1K), suggesting wider adoption.
- •cron-when, cron-parser are pre-1.0 — API may change.