Pick k9s if
You want the broadest feature set, plugins, and years of battle-testing. Production teams running 50+ clusters.
→ k9scli.iocomparison
k4s vs k9s — the honest comparison
Both are open-source, both are written in Go, both are excellent. Here's how they actually differ. Read the story behind k4s, or jump to the FAQ.
| Capability | k4s | k9s | lazykube | kubectl |
|---|---|---|---|---|
| Single static binary | ✅ | ✅ | ✅ | ✅ |
| Multi-pod log streaming | ✅ | ✅ | ✅ | manual |
Live / filter on every view | ✅ | ✅ | partial | grep |
kubectl equivalent in footer | ✅ unique | ❌ | ❌ | n/a |
| Container picker for exec / logs | ✅ | ✅ | partial | manual |
| Auto-refresh watch | ✅ | ✅ | ✅ | -w |
Built-in top (metrics.k8s.io) | ✅ | ✅ | ❌ | ✅ |
| kubeconfig context switcher | ✅ | ✅ | ✅ | ✅ |
| Action abstraction (auditable verbs) | ✅ | ❌ | ❌ | n/a |
| Maturity | v1.0 (rewrite) | mature | mature | very mature |
| Resource actions (delete/scale) | roadmap | ✅ | ✅ | ✅ |
| Plugin / extension system | ❌ | ✅ | ❌ | ✅ |
| License | MIT | Apache 2.0 | MIT | Apache 2.0 |
| Footprint (binary) | ~38 MB | ~50 MB | ~25 MB | varies |
Both k9s and lazykube are excellent — k4s exists for the niche where "I want a TUI and I want to learn kubectl" overlap.
when to pick each
Pick the right tool for the job.
We don't think there's one TUI to rule them all. Here's how we'd choose.
Pick lazykube if
You want the smallest binary and a "lazy" ergonomic style à la lazygit. Solo dev workflows.
Pick k4s if
You want a TUI that doubles as a kubectl tutor. You're learning the API or training new joiners. You like opinionated software.
Try k4s now.
Convinced? Curious? Either way it's one go install away.
go install github.com/LywwKkA-aD/k4s/cmd/k4s@latest