Decision Workspace
onager vs impetus vs featherstone
Side-by-side comparison of Rust crates
45
onager
growingv0.0.2
Featherstone rigid-body physics library built in Rust
54
impetus
experimentalv1.1.0
Physics engine — 2D/3D rigid body simulation, collision detection, constraints, and spatial queries for AGNOS
49
featherstone
experimentalv0.1.0
Robotics dynamics engine — O(n) forward/inverse dynamics for kinematic trees, contact solvers, and time integration
Core Metrics
| onager | impetus | featherstone | |
|---|---|---|---|
| Health Score | 45 | 54 | 49 |
| Total Downloads | 2.7K | 232 | 12 |
| 30d Downloads | 4 | 232 | 12 |
| Dependents | 0 | 5 | 0 |
| Releases | 2 | 3 | 1 |
| Last Updated | 818d ago | 2d ago | 5d ago |
| Age | 2y 2m | 4d | 5d |
Health Breakdown
onager
Maintenance
4
Quality
16
Community
11
Popularity
4
Documentation
10
impetus
Maintenance
14
Quality
17
Community
8
Popularity
3
Documentation
12
featherstone
Maintenance
13
Quality
14
Community
6
Popularity
1
Documentation
15
Technical Details
| onager | impetus | featherstone | |
|---|---|---|---|
| Version | 0.0.2 | 1.1.0 | 0.1.0 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT OR Apache-2.0 | GPL-3.0-only | Apache-2.0 |
| Dependencies | 0 | 7 | 7 |
| Crate Size | 10KB | 138KB | 170KB |
| Features | 0 | 5 | 4 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2024 | 2021 |
| MSRV | — | 1.89 | 1.70 |
| Owners | 3 (team) | 1 | 1 |
Links
Quick Verdict
- •impetus leads with a health score of 54/100, but none of the options score above 80.
- •onager has the most downloads (2.7K), suggesting wider adoption.
- •⚠ onager has not been updated in over a year.
- •onager, featherstone are pre-1.0 — API may change.