Show HN: Kuack – Run Kubernetes jobs in visitor browsers

Show HN (score: 5)
Found: December 29, 2025
ID: 2837

Description

DevOps
Show HN: Kuack – Run Kubernetes jobs in visitor browsers WebAssembly makes it possible to run serious computation in browsers. I wanted to see if we could treat browsers as Kubernetes workers.

Kuack is a Virtual Kubelet provider that schedules Kubernetes workloads to browser tabs. Visitors' browsers connect, report capacity, and become ephemeral workers. It looks like a regular Kubernetes node - same kubectl commands, same OCI images, same workflows. The difference is that pods execute in browsers instead of servers. With multi-platform OCI images, Kubernetes can fall back to regular nodes if no agents are available.

It's designed for short-lived, stateless, CPU-heavy jobs: load testing from real networks, local data preprocessing, edge computing scenarios, machine learning tasks, etc.

Not a replacement for your cluster - just an extra option for workloads that benefit from browser execution.

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