Decision Workspace
smtp-proto vs mavlink vs varlink_parser
Side-by-side comparison of Rust crates
62
smtp-proto
growingv0.2.1
SMTP protocol parser
63
mavlink
growingv0.17.1
Implements the MAVLink data interchange format for UAVs.
63
varlink_parser
growingv6.0.0
A crate for parsing varlink interface definition files.
Core Metrics
| smtp-proto | mavlink | varlink_parser | |
|---|---|---|---|
| Health Score | 62 | 63 | 63 |
| Total Downloads | 364.0K | 230.6K | 59.4K |
| 30d Downloads | 28.2K | 12.7K | 921 |
| Dependents | 38 | 57 | 122 |
| Releases | 10 | 45 | 33 |
| Last Updated | 21d ago | 54d ago | 158d ago |
| Age | 3y 2m | 10y 1m | 8y |
Health Breakdown
smtp-proto
Maintenance
18
Quality
17
Community
10
Popularity
7
Documentation
10
mavlink
Maintenance
15
Quality
15
Community
15
Popularity
6
Documentation
12
varlink_parser
Maintenance
11
Quality
20
Community
12
Popularity
6
Documentation
14
Technical Details
| smtp-proto | mavlink | varlink_parser | |
|---|---|---|---|
| Version | 0.2.1 | 0.17.1 | 6.0.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | Apache-2.0 OR MIT | MIT/Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 2 | 13 | 3 |
| Crate Size | 38KB | 306KB | 14KB |
| Features | 3 | 34 | 0 |
| Yanked % | 0.0% | 4.4% | 0.0% |
| Edition | 2024 | 2021 | 2018 |
| MSRV | — | 1.80.0 | 1.73.0 |
| Owners | 1 | 5 | 1 |
Links
Quick Verdict
- •mavlink leads with a health score of 63/100, but none of the options score above 80.
- •smtp-proto has the most downloads (364.0K), suggesting wider adoption.
- •varlink_parser is depended on by 122 crates — strongest ecosystem trust.
- •smtp-proto, mavlink are pre-1.0 — API may change.