Decision Workspace
functional-kube vs k8s-operator-controller vs kube-runtime
Side-by-side comparison of Rust crates
38
functional-kube
experimentalv0.1.0
A framework for building Kubernetes controllers using the Functional Core, Imperative Shell pattern
40
k8s-operator-controller
experimentalv0.1.1
Kubernetes controller runtime for k8s-operator framework
70
kube-runtime
stablev3.1.0
Kubernetes controller runtime
Core Metrics
| functional-kube | k8s-operator-controller | kube-runtime | |
|---|---|---|---|
| Health Score | 38 | 40 | 70 |
| Total Downloads | 70 | 119 | 44.3M |
| 30d Downloads | 0 | 0 | 3.0M |
| Dependents | 0 | 2 | 327 |
| Releases | 1 | 2 | 86 |
| Last Updated | 106d ago | 152d ago | 69d ago |
| Age | 3m | 5m | 5y 10m |
Health Breakdown
functional-kube
Maintenance
8
Quality
12
Community
6
Popularity
2
Documentation
10
k8s-operator-controller
Maintenance
10
Quality
12
Community
6
Popularity
2
Documentation
10
kube-runtime
Maintenance
16
Quality
16
Community
18
Popularity
8
Documentation
12
Technical Details
| functional-kube | k8s-operator-controller | kube-runtime | |
|---|---|---|---|
| Version | 0.1.0 | 0.1.1 | 3.1.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT | MIT OR Apache-2.0 | Apache-2.0 |
| Dependencies | 9 | 9 | 28 |
| Crate Size | 27KB | 18KB | 96KB |
| Features | 0 | 0 | 4 |
| Yanked % | 0.0% | 0.0% | 3.5% |
| Edition | 2024 | 2021 | 2024 |
| MSRV | — | — | 1.88.0 |
| Owners | 1 | 1 | 2 (team) |
Links
Quick Verdict
- •kube-runtime leads with a health score of 70/100, but none of the options score above 80.
- •kube-runtime is depended on by 327 crates — strongest ecosystem trust.
- •functional-kube, k8s-operator-controller are pre-1.0 — API may change.