Open Source · Distributed · Browser-Native

The Global
Browser Supercomputer

Like Vast.ai — but for CPU and RAM.

Open a tab, join the grid. Submit jobs, distribute computation across thousands of browsers worldwide. Zero install. Full sandbox.

Web Workers for sandboxed computeWASM for native-speed tasksExa for data sourcing

How It Works

Three steps from browser tab to global supercomputer

1

Join

Open /join in any browser. Your CPU and RAM become a compute node. Web Workers execute tasks — zero install.

2

Submit

Write a JS function or upload WASM. Submit input data via/jobs. The orchestrator splits work across nodes.

3

Compute

Tasks execute in parallel across browsers. Results aggregate automatically. 100 tabs = 100× parallelism. No servers, no VMs, just tabs.

Architecture

Serverless orchestration with browser-native compute


 ┌──────────────┐     ┌──────────────┐
 │  Browser A   │     │  Browser B   │     ┌──────────────┐
 │  /join       │     │  /join       │     │   Submitter  │
 │  (Worker)    │     │  (Worker)    │     │   /jobs      │
 └──────┬───────┘     └──────┬───────┘     └──────┬───────┘
        │    WebSocket (WSS)    │                    │
        └──────────┬────────────┘────────────────────┘
                   │
         ┌─────────┴─────────┐
         │  API Gateway WS   │
         │  (Route on type)  │
         └─────────┬─────────┘
        ┌──────────┼──────────┐
        ▼          ▼          ▼
   ┌─────────┐ ┌────────┐ ┌──────────┐
   │ connect │ │register│ │submit-job│  ... 7 Lambdas
   │disconnect│ │heartbeat│ │dispatch │
   │         │ │        │ │aggregate │
   └────┬────┘ └───┬────┘ └────┬─────┘
        └─────────┼────────────┘
                  ▼
         ┌────────────────┐
         │   DynamoDB     │
         │ connections    │
         │ nodes          │
         │ jobs · tasks   │
         └────────────────┘

Security Model

Defense in depth — untrusted code can't escape

🔒 Web Worker Sandbox

  • ✓ Separate thread, no DOM access
  • ✓ Blocked: fetch, XMLHttpRequest, WebSocket
  • ✓ Blocked: importScripts, Worker, navigator
  • ✓ Blocked: localStorage, indexedDB, document
  • ✓ Timeout enforcement kills runaway code

🛡️ Frozen Scope

  • ✓ Only safe globals exposed (Math, JSON, Array...)
  • ✓ Object.freeze() prevents scope mutation
  • ✓ WASM: no host function imports
  • ✓ WASM binaries capped at 10MB
  • ✓ Future: v86 Linux VM for full isolation

AWS Lambda · DynamoDB · API Gateway  · Vercel Next.js 15  · Exa AI Search  · Web Workers + WASM