Decision Workspace
nom-packrat vs asn1-rs vs x509-parser
Side-by-side comparison of Rust crates
42
nom-packrat
growingv0.7.0
Extension of nom to apply Packrat Parsing
61
asn1-rs
growingv0.7.2
Parser/encoder for ASN.1 BER/DER data
60
x509-parser
growingv0.18.1
Parser for the X.509 v3 format (RFC 5280 certificates)
Core Metrics
| nom-packrat | asn1-rs | x509-parser | |
|---|---|---|---|
| Health Score | 42 | 61 | 60 |
| Total Downloads | 161.7K | 123.5M | 129.6M |
| 30d Downloads | 3.9K | 6.4M | 6.3M |
| Dependents | 76 | 388 | 6.8K |
| Releases | 16 | 18 | 39 |
| Last Updated | 1209d ago | 56d ago | 158d ago |
| Age | 6y 11m | 5y | 8y 5m |
Health Breakdown
nom-packrat
Maintenance
4
Quality
14
Community
9
Popularity
6
Documentation
9
asn1-rs
Maintenance
15
Quality
15
Community
12
Popularity
8
Documentation
11
x509-parser
Maintenance
12
Quality
14
Community
15
Popularity
8
Documentation
11
Technical Details
| nom-packrat | asn1-rs | x509-parser | |
|---|---|---|---|
| Version | 0.7.0 | 0.7.2 | 0.18.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 4 | 16 | 11 |
| Crate Size | 6KB | 93KB | 103KB |
| Features | 0 | 8 | 4 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2018 | 2018 | 2018 |
| MSRV | — | 1.68 | 1.67.1 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •asn1-rs leads with a health score of 61/100, but none of the options score above 80.
- •x509-parser has the most downloads (129.6M), suggesting wider adoption.
- •x509-parser is depended on by 6.8K crates — strongest ecosystem trust.
- •⚠ nom-packrat has not been updated in over a year.