Decision Workspace
fern vs env_logger vs env_filter
Side-by-side comparison of Rust crates
58
fern
growingv0.7.1
Simple, efficient logging
70
env_logger
growingv0.11.10
A logging implementation for `log` which is configured via an environment variable.
69
env_filter
stablev1.0.1
Filter log events using environment variables
Core Metrics
| fern | env_logger | env_filter | |
|---|---|---|---|
| Health Score | 58 | 70 | 69 |
| Total Downloads | 37.5M | 460.0M | 136.3M |
| 30d Downloads | 2.2M | 25.1M | 11.9M |
| Dependents | 6.0K | 143.9K | 481 |
| Releases | 40 | 58 | 7 |
| Last Updated | 526d ago | 63d ago | 63d ago |
| Age | 11y 5m | 11y 4m | 2y 4m |
Health Breakdown
fern
Maintenance
7
Quality
15
Community
14
Popularity
8
Documentation
14
env_logger
Maintenance
14
Quality
17
Community
19
Popularity
8
Documentation
12
env_filter
Maintenance
13
Quality
19
Community
17
Popularity
8
Documentation
12
Technical Details
| fern | env_logger | env_filter | |
|---|---|---|---|
| Version | 0.7.1 | 0.11.10 | 1.0.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 13 | 5 | 3 |
| Crate Size | 305KB | 32KB | 15KB |
| Features | 8 | 7 | 2 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2018 | 2021 | 2021 |
| MSRV | 1.60 | 1.71 | 1.71 |
| Owners | 1 | 6 (team) | 2 (team) |
Links
Quick Verdict
- •env_logger leads with a health score of 70/100, but none of the options score above 80.
- •env_logger is depended on by 143.9K crates — strongest ecosystem trust.
- •⚠ fern has not been updated in over a year.
- •fern, env_logger are pre-1.0 — API may change.