Decision Workspace
proc-macro2 vs quote vs syn
Side-by-side comparison of Rust crates
69
proc-macro2
stablev1.0.106
A substitute implementation of the compiler's `proc_macro` API to decouple token-based libraries from the procedural macro use case.
72
quote
stablev1.0.45
Quasi-quoting macro quote!(...)
71
syn
stablev2.0.117
Parser for Rust source code
Core Metrics
| proc-macro2 | quote | syn | |
|---|---|---|---|
| Health Score | 69 | 72 | 71 |
| Total Downloads | 1.2B | 1.2B | 1.7B |
| 30d Downloads | 84.1M | 86.7M | 119.6M |
| Dependents | 122.6K | 138.5K | 139.7K |
| Releases | 162 | 93 | 350 |
| Last Updated | 124d ago | 83d ago | 95d ago |
| Age | 8y 10m | 9y 8m | 9y 8m |
Health Breakdown
proc-macro2
Maintenance
13
Quality
20
Community
13
Popularity
8
Documentation
15
quote
Maintenance
14
Quality
22
Community
13
Popularity
8
Documentation
15
syn
Maintenance
14
Quality
20
Community
14
Popularity
8
Documentation
15
Technical Details
| proc-macro2 | quote | syn | |
|---|---|---|---|
| Version | 1.0.106 | 1.0.45 | 2.0.117 |
| Stable (≥1.0) | ✓ Yes | ✓ Yes | ✓ Yes |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 6 | 3 | 15 |
| Crate Size | 60KB | 32KB | 306KB |
| Features | 4 | 2 | 12 |
| Yanked % | 1.2% | 0.0% | 4.9% |
| Edition | 2021 | 2021 | 2021 |
| MSRV | 1.68 | 1.71 | 1.71 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •quote leads with a health score of 72/100, but none of the options score above 80.
- •syn has the most downloads (1.7B), suggesting wider adoption.
- •syn is depended on by 139.7K crates — strongest ecosystem trust.