Decision Workspace
fchashmap vs picojson vs slotpool
Side-by-side comparison of Rust crates
32
fchashmap
growingv0.1.3
A fixed capacity no_std hashmap
55
picojson
growingv0.2.3
A resource-constrained JSON parser for embedded systems.
54
slotpool
experimentalv0.2.1
Fixed-capacity object pools for no_std / embedded systems
Core Metrics
| fchashmap | picojson | slotpool | |
|---|---|---|---|
| Health Score | 32 | 55 | 54 |
| Total Downloads | 5.7K | 3.7K | 63 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 1 | 0 | 0 |
| Releases | 3 | 10 | 4 |
| Last Updated | 1884d ago | 77d ago | 23d ago |
| Age | 5y 1m | 1y | 24d |
Health Breakdown
fchashmap
Maintenance
4
Quality
8
Community
7
Popularity
4
Documentation
9
picojson
Maintenance
15
Quality
17
Community
6
Popularity
4
Documentation
13
slotpool
Maintenance
18
Quality
15
Community
6
Popularity
2
Documentation
13
Technical Details
| fchashmap | picojson | slotpool | |
|---|---|---|---|
| Version | 0.1.3 | 0.2.3 | 0.2.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 5 | 4 | 4 |
| Crate Size | 13KB | 111KB | 15KB |
| Features | 0 | 10 | 2 |
| Yanked % | 66.7% | 0.0% | 0.0% |
| Edition | 2018 | 2021 | 2024 |
| MSRV | — | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •picojson leads with a health score of 55/100, but none of the options score above 80.
- •fchashmap has the most downloads (5.7K), suggesting wider adoption.
- •⚠ fchashmap has not been updated in over a year.