Decision Workspace
json-five vs json5 vs ion-rs
Side-by-side comparison of Rust crates
54
json-five
growingv0.3.1
JSON5 parser with round-trip capabilities and compatible with the serde data model
55
json5
growingv1.3.1
A Rust JSON5 serializer and deserializer which speaks Serde.
70
ion-rs
stablev1.0.0
Implementation of Amazon Ion
Core Metrics
| json-five | json5 | ion-rs | |
|---|---|---|---|
| Health Score | 54 | 55 | 70 |
| Total Downloads | 724.3K | 67.1M | 656.9K |
| 30d Downloads | 72.9K | 2.6M | 16.9K |
| Dependents | 62 | 4.9K | 232 |
| Releases | 8 | 20 | 35 |
| Last Updated | 186d ago | 156d ago | 20d ago |
| Age | 1y 5m | 7y 11m | 5y 11m |
Health Breakdown
json-five
Maintenance
10
Quality
16
Community
11
Popularity
7
Documentation
10
json5
Maintenance
9
Quality
16
Community
12
Popularity
8
Documentation
10
ion-rs
Maintenance
17
Quality
17
Community
17
Popularity
7
Documentation
12
Technical Details
| json-five | json5 | ion-rs | |
|---|---|---|---|
| Version | 0.3.1 | 1.3.1 | 1.0.0 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✓ Yes |
| License | MIT | MIT | Apache-2.0 |
| Dependencies | 7 | 9 | 31 |
| Crate Size | 49KB | 78KB | 676KB |
| Features | 3 | 0 | 9 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2024 | 2021 |
| MSRV | — | — | 1.82 |
| Owners | 1 | 1 | 3 (team) |
Links
Quick Verdict
- •ion-rs leads with a health score of 70/100, but none of the options score above 80.
- •json5 has the most downloads (67.1M), suggesting wider adoption.
- •json5 is depended on by 4.9K crates — strongest ecosystem trust.
- •json-five is pre-1.0 — API may change.