Decision Workspace
parley-mls vs gbp-protocol vs openmls
Side-by-side comparison of Rust crates
48
parley-mls
experimentalv0.2.0
Agent-side MLS (RFC 9420) wrappers for the Parley messaging protocol — KeyPackages, group lifecycle, encrypt/decrypt for private channels.
60
gbp-protocol
experimentalv1.5.5
Group Broadcast Protocol base layer: GbpFrame (CBOR), control plane and error object. The IP-like substrate that GTP, GAP and GSP build on top of.
58
openmls
growingv0.8.1
A Rust implementation of the Messaging Layer Security (MLS) protocol, as defined in RFC 9420.
Core Metrics
| parley-mls | gbp-protocol | openmls | |
|---|---|---|---|
| Health Score | 48 | 60 | 58 |
| Total Downloads | 81 | 971 | 192.2K |
| 30d Downloads | 0 | 0 | 74.3K |
| Dependents | 4 | 150 | 298 |
| Releases | 4 | 26 | 25 |
| Last Updated | 4d ago | 5d ago | 97d ago |
| Age | 10d | 16d | 5y 6m |
Health Breakdown
parley-mls
Maintenance
14
Quality
12
Community
8
Popularity
2
Documentation
12
gbp-protocol
Maintenance
17
Quality
15
Community
12
Popularity
4
Documentation
12
openmls
Maintenance
13
Quality
11
Community
15
Popularity
6
Documentation
13
Technical Details
| parley-mls | gbp-protocol | openmls | |
|---|---|---|---|
| Version | 0.2.0 | 1.5.5 | 0.8.1 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT OR Apache-2.0 | Apache-2.0 | MIT |
| Dependencies | 10 | 5 | 35 |
| Crate Size | 25KB | 8KB | 497KB |
| Features | 0 | 0 | 10 |
| Yanked % | 0.0% | 0.0% | 8.0% |
| Edition | 2021 | 2024 | 2021 |
| MSRV | 1.94 | 1.92 | — |
| Owners | 1 | 1 | 4 (team) |
Links
Quick Verdict
- •gbp-protocol leads with a health score of 60/100, but none of the options score above 80.
- •openmls has the most downloads (192.2K), suggesting wider adoption.
- •openmls is depended on by 298 crates — strongest ecosystem trust.
- •parley-mls, openmls are pre-1.0 — API may change.