Decision Workspace
fchashmap vs picojson vs arrform
Side-by-side comparison of Rust crates
32
fchashmap
growingv0.1.3
A fixed capacity no_std hashmap
54
picojson
experimentalv0.2.2
A resource-constrained JSON parser for embedded systems.
40
arrform
growingv0.1.1
String formatting without memory allocator
Core Metrics
| fchashmap | picojson | arrform | |
|---|---|---|---|
| Health Score | 32 | 54 | 40 |
| Total Downloads | 5.4K | 3.6K | 16.2K |
| 30d Downloads | 77 | 101 | 1.6K |
| Dependents | 1 | 0 | 0 |
| Releases | 3 | 9 | 2 |
| Last Updated | 1776d ago | 69d ago | 1572d ago |
| Age | 4y 10m | 9m | 4y 3m |
Health Breakdown
fchashmap
Maintenance
4
Quality
8
Community
7
Popularity
4
Documentation
9
picojson
Maintenance
15
Quality
16
Community
6
Popularity
4
Documentation
13
arrform
Maintenance
3
Quality
16
Community
6
Popularity
5
Documentation
10
Technical Details
| fchashmap | picojson | arrform | |
|---|---|---|---|
| Version | 0.1.3 | 0.2.2 | 0.1.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 5 | 3 | 0 |
| Crate Size | 13KB | 110KB | 8KB |
| Features | 0 | 9 | 0 |
| Yanked % | 66.7% | 0.0% | 0.0% |
| Edition | 2018 | 2021 | 2021 |
| MSRV | — | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •picojson leads with a health score of 54/100, but none of the options score above 80.
- •arrform has the most downloads (16.2K), suggesting wider adoption.
- •⚠ fchashmap, arrform have not been updated in over a year.