Launching today
Radar
The missing open-source Kubernetes UI
287 followers
The missing open-source Kubernetes UI
287 followers
Radar brings your Kubernetes workflows into one fast, open-source UI: real-time topology, resources, events, Helm, GitOps, live traffic flows, security & best-practice checks, image filesystem inspection, and MCP for AI agents. Run it locally as a single binary or self-host it in-cluster with RBAC + OIDC — no account, agents, or cloud required.
Radar
Hey PH 👋 Eyal, Roy, and Nadav here - the team behind Radar. We also build Skyhook, YC W23.
We've wanted a better Kubernetes UI for a long time. kubectl is powerful, but day-to-day cluster work still ends up split across terminals, dashboards, Helm, Argo/Flux, cloud consoles, and log tools.
The existing options all have tradeoffs. Lens lost the OSS trust that made people love it. FreeLens is a welcome fork, but still carries the same heavy Electron desktop model. Headlamp is useful, but shallow once you want deeper operations - Helm, GitOps, traffic, audits. k9s is excellent if you live in the terminal, but not everyone does. And the SaaS tools often price by node and ask for a work email before they let you look at your own cluster.
So we built the Kubernetes UI we wanted: fast, local-first, open source, and not locked behind an account. We quietly shipped it a couple of months ago. The community took it past 1.4k GitHub stars and gave us way more feedback than we expected, so we kept shipping. Today is the proper launch.
What's in it:
- Topology with real ownership chains, not force-directed spaghetti
- Live event stream across all resources using Kubernetes watches, not polling
- Helm release management with diff/rollback + native Argo CD / Flux sync
- Live traffic flows via Hubble/Cilium, Caretta, or Istio
- Cost insights via OpenCost - auto-detected per namespace, workload, and node
- Cluster audit - 31 checks across security, reliability, and efficiency
- Image filesystem viewer - read container files in the UI, no exec, no pull
- Built-in MCP server - point Cursor or Claude at your cluster
Plus first-class integrations for 20+ popular K8s tools - Argo Rollouts, Karpenter, KEDA, cert-manager, Trivy, Kyverno, Velero, Knative, and more.
Single Go binary. Apache 2.0. No account required. No usage tracking. No cloud dependency.
Site: https://radarhq.io
Repo: https://github.com/skyhook-io/radar
Discord: https://radarhq.io/community/chat
Also yes, we cared about making it beautiful. K8s tools don't have to look like punishment.
Would love your feedback - what's missing, what breaks, what we got wrong. We're here all day.
@nadav_erell Finally! k9s is still my go-to, but as you said, most people may want a real GUI. Nice product!
Radar
@sammy_anagolum Thanks!
Would love to hear what you think compared to k9s once you've had more change to test it out :D
a cluster audit with 31 checks across security and reliability is a massive value-add for day-to-day ops. we usually run separate trivy or kyverno reports, so having that integrated into the primary ui workflow is a huge time-saver. does the audit allow for custom check injection? @nadav_erell
Radar
@vikramp7470 Thanks! Not yet, but definitely something we can consider.
If you have any specific checks you think are missing that could be very fast to add, we tried to balance and not go overboard spamming too many, so real things don't get lost in the noise.
@nadav_erell Makes sense 👍 Custom checks later would be super useful for advanced workflows.
Local-first with zero cluster-side installation is the right call. When I was scaling an engineering org from 15 to 120, the biggest friction with K8s tooling was always the chicken-and-egg problem: you need cluster access to install the tool that helps you understand the cluster. Having this run as a single binary using existing kubeconfig means any engineer can get visibility without needing platform team approval first. That alone probably saves a week of onboarding time per new infrastructure hire.
Radar
@avrisimon 🎯
Radar
@jalcantara You deserve better than shoddiness :)
We basically built this because none of the existing options really did what we wanted well enough. Surprising that this is the case for k8s in 2026.
ApyHub : The All in one API Platform
nice - gave it a star! good luck!
Argonaut
Looks very useful, sharing it with my team