Decision Workspace
rsasl vs vsmtp-rsasl vs pulseengine-mcp-security-middleware
Side-by-side comparison of Rust crates
70
rsasl
stablev2.2.1
The Rust SASL framework, aimed at both middleware-style protocol implementation and application code. Designed to make SASL authentication simple and safe while handing as much control to the user as possible.
50
vsmtp-rsasl
growingv1.5.1-rc2
See https://crates.io/crates/rsasl
52
pulseengine-mcp-security-middleware
experimentalv0.17.0
Zero-configuration security middleware for MCP servers with Axum integration
Core Metrics
| rsasl | vsmtp-rsasl | pulseengine-mcp-security-middleware | |
|---|---|---|---|
| Health Score | 70 | 50 | 52 |
| Total Downloads | 432.3K | 11.8K | 1.5K |
| 30d Downloads | 43.4K | 3 | 10 |
| Dependents | 104 | 19 | 0 |
| Releases | 39 | 4 | 8 |
| Last Updated | 45d ago | 1289d ago | 96d ago |
| Age | 5y 11m | 3y 10m | 7m |
Health Breakdown
rsasl
Maintenance
16
Quality
18
Community
14
Popularity
7
Documentation
15
vsmtp-rsasl
Maintenance
5
Quality
16
Community
12
Popularity
5
Documentation
12
pulseengine-mcp-security-middleware
Maintenance
15
Quality
12
Community
6
Popularity
4
Documentation
15
Technical Details
| rsasl | vsmtp-rsasl | pulseengine-mcp-security-middleware | |
|---|---|---|---|
| Version | 2.2.1 | 1.5.1-rc2 | 0.17.0 |
| Stable (≥1.0) | ✓ Yes | ✓ Yes | ✗ No |
| License | Apache-2.0 OR MIT | MIT | MIT OR Apache-2.0 |
| Dependencies | 17 | 3 | 27 |
| Crate Size | 94KB | 20KB | 42KB |
| Features | 17 | 2 | 3 |
| Yanked % | 7.7% | 100.0% | 0.0% |
| Edition | 2021 | 2018 | 2024 |
| MSRV | 1.65.0 | — | 1.88 |
| Owners | 2 | 2 | 1 |
Links
Quick Verdict
- •rsasl leads with a health score of 70/100, but none of the options score above 80.
- •rsasl is depended on by 104 crates — strongest ecosystem trust.
- •⚠ vsmtp-rsasl has not been updated in over a year.
- •pulseengine-mcp-security-middleware is pre-1.0 — API may change.