Decision Workspace
open62541 vs open62541-sys vs sawp-modbus
Side-by-side comparison of Rust crates
53
open62541
growingv0.10.1
High-level, safe bindings for the C99 library open62541, an open source and free implementation of OPC UA (OPC Unified Architecture).
62
open62541-sys
growingv0.5.4
Low-level, unsafe bindings for the C99 library open62541, an open source and free implementation of OPC UA (OPC Unified Architecture).
54
sawp-modbus
growingv0.13.1
SAWP Protocol Parser for Modbus
Core Metrics
| open62541 | open62541-sys | sawp-modbus | |
|---|---|---|---|
| Health Score | 53 | 62 | 54 |
| Total Downloads | 198.8K | 219.7K | 751.7K |
| 30d Downloads | 36.0K | 37.5K | 24.0K |
| Dependents | 0 | 35 | 24 |
| Releases | 35 | 38 | 19 |
| Last Updated | 149d ago | 11d ago | 541d ago |
| Age | 2y 2m | 2y 2m | 5y 2m |
Health Breakdown
open62541
Maintenance
13
Quality
13
Community
6
Popularity
6
Documentation
15
open62541-sys
Maintenance
19
Quality
12
Community
10
Popularity
6
Documentation
15
sawp-modbus
Maintenance
7
Quality
16
Community
14
Popularity
7
Documentation
10
Technical Details
| open62541 | open62541-sys | sawp-modbus | |
|---|---|---|---|
| Version | 0.10.1 | 0.5.4 | 0.13.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MPL-2.0 | MPL-2.0 | MIT |
| Dependencies | 21 | 4 | 7 |
| Crate Size | 146KB | 2.7MB | 15KB |
| Features | 7 | 2 | 2 |
| Yanked % | 2.9% | 2.6% | 0.0% |
| Edition | 2024 | 2024 | 2021 |
| MSRV | 1.85 | 1.85 | — |
| Owners | 1 | 1 | 5 |
Links
Quick Verdict
- •open62541-sys leads with a health score of 62/100, but none of the options score above 80.
- •sawp-modbus has the most downloads (751.7K), suggesting wider adoption.
- •⚠ sawp-modbus has not been updated in over a year.