Runs 100% in your browser · WebAssembly

The multi-cloud simulator,
right in your browser.

Spin up a working AWS, GCP & Azure in a browser tab — buckets, tables, queues, functions, VPCs and more. Your real boto3 / google-cloud-* / azure-sdk code works unchanged. No install, no signup, no cloud account.

▶ Launch the simulator Get the full appliance →
Nothing leaves your machine Boots in seconds Free, no account
What you can do

A real cloud console — served from a browser tab

All three clouds

AWS, GCP and Azure side by side — object storage, NoSQL, SQL, queues, pub/sub, secrets, KMS, IAM, serverless, API gateway and VPC.

Your real SDK code

Point boto3, aws-cli, google-cloud-* or azure-* at the local endpoint — no mocks, no shims. The same code you ship to prod.

Private by design

Everything runs client-side in WebAssembly. No data uploaded, no telemetry on your resources — it lives entirely in your tab.

Zero setup

No Docker, no VM, no cloud bill. Open the tab and you have a running multi-cloud environment in seconds.

S3 DynamoDB Lambda API Gateway VPC SQS SNS EventBridge KMS Secrets IAM RDS GCS Firestore Pub/Sub Cloud SQL Azure Blob Cosmos DB Service Bus Key Vault Azure SQL
How it works

The same engine — compiled to WebAssembly

1

Open the tab

The simulator boots CPython in your browser via Pyodide/WASM — no server round-trips.

2

The real cores load

The exact substrate-free conformance cores that power the desktop appliance run in-page.

3

Point your SDK

Use the built-in console, or run an external CLI/SDK against the local relay endpoint.

4

Build & learn

Create resources, run apps, break things — all offline, all free, all yours.

See it for yourself.

The fastest way to understand Vyomi is to run it. It opens in this tab — no commitment.

▶ Launch the simulator Explore all features →

Want persistence, bigger workloads, real Postgres/MinIO backends and a team console? Download the full appliance.