Decision Workspace
callosum vs shm-primitives-async vs crossbar
Side-by-side comparison of Rust crates
40
callosum
experimentalv0.1.0
Zero-copy shared memory IPC for Rust
55
shm-primitives-async
experimentalv7.3.0
Async OS-level control primitives for shared memory IPC (doorbell and mmap control)
51
crossbar
experimentalv1.2.0
Zero-copy pub/sub over shared memory. URI-addressed. O(1) transfer at any payload size.
Core Metrics
| callosum | shm-primitives-async | crossbar | |
|---|---|---|---|
| Health Score | 40 | 55 | 51 |
| Total Downloads | 39 | 275 | 100 |
| 30d Downloads | 3 | 276 | 101 |
| Dependents | 0 | 8 | 0 |
| Releases | 1 | 9 | 9 |
| Last Updated | 112d ago | 4d ago | 2d ago |
| Age | 3m | 24d | 8d |
Health Breakdown
callosum
Maintenance
7
Quality
13
Community
6
Popularity
2
Documentation
12
shm-primitives-async
Maintenance
13
Quality
15
Community
9
Popularity
3
Documentation
15
crossbar
Maintenance
16
Quality
15
Community
6
Popularity
2
Documentation
12
Technical Details
| callosum | shm-primitives-async | crossbar | |
|---|---|---|---|
| Version | 0.1.0 | 7.3.0 | 1.2.0 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✓ Yes |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | Apache-2.0 |
| Dependencies | 6 | 7 | 4 |
| Crate Size | 20KB | 24KB | 118KB |
| Features | 0 | 0 | 1 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2024 | 2021 |
| MSRV | 1.85 | 1.91 | 1.87 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •shm-primitives-async leads with a health score of 55/100, but none of the options score above 80.
- •callosum is pre-1.0 — API may change.