BrowserPod for Node.js is here
Code Sandboxes
in your browser
Instant in-browser runtimes to execute untrusted code safely, next tothe user.
Built by Leaning Technologies, the tech company trusted by leadingorganisations worldwide.
See BrowserPod for Node.js in action
A full Vite + Svelte development environment, running fullyin-browser, with public URLs.
Features
The universal sandboxed execution layer for
browser-based compute.
Multi-runtime support
BrowserPod is a universal, browser-local sandbox to run untrustedcode next to the user. It is powered by modular runtime engines inWebAssembly, and supports Node.js, with Python, Ruby, Go and Rustcoming soon.
Multi-process execution
Run real-world code inside the browser sandbox, with processisolation and true concurrency via WebWorkers.
Instant interactive demos
Share a private link of your real application via BrowserPod'sPortals, public URLs routed to the browser sandbox.
Controlled outbound networking
Control the permitted outbound network requests, so tools canselectively fetch dependencies and talk to external services.
Virtual Filesystem
BrowserPod provides a full file system, meaning all the sandboxdata data stays local to your device.
Native speed
BrowserPod provides near-native speed thanks to its runtimeengines compiled to WebAssembly, making it much faster thantypical cloud sandboxes.
Instant cold starts
BrowserPod boots local sandboxes near instantly, eliminatinglatencies and minimizing real time-to-first-instruction of cloudalternatives.
Language Support
Multiple language compatibility
Built from the ground-up to support any programming language
Node.js
High-fidelity, versioned support for Node.js environments
Python
Python support planned on the product roadmap.
Ruby
Ruby support planned on the product roadmap.
Go
Go support planned on the product roadmap.
Rust
Rust support planned on the product roadmap.
Use Cases
Production-ready workflows, fully in the browser
BrowserPod powers secure AI code execution, interactive docs, fullin-browser IDEs, instant demos, and serverless utilities withoutextra infrastructure.
Sandboxed AI code execution
Execute AI-generated code in a safe, isolated environment, with near-zero latency and high performance. Unlike cloud-based sandboxes that require scalable infrastructure, BrowserPod runs code directly in the user's browser using WebAssembly.
Safe code execution: Let your AI agents generate code and run it in Pods with zero risks and greater performance than cloud sandboxes.
Agentic workflows: Give AI assistants and agents a high-fidelity environment where they can "run loose" on projects while remaining strictly isolated from the rest of the host system.
Supply-chain risk mitigation: Securely execute untrusted code to protect against potential supply-chain attacks common in AI environments (e.g. slophacking, code injection).
Transform developer experiences
Move beyond static code snippets. Build interactive documentation that allows users to run, modify, and test backend code examples instantly in their browser.
Zero server infrastructure: Deliver runtime without server-side provisioning, drastically reducing operational costs and complexity.
Language agnostic: Extensive support for multiple languages, not just Node.js and Python.
Pre-configured labs: Developers can jump into a pre-configured lab environment with one click - no more "it works on my machine".
Full IDEs and dev environments in-browser
Enable high-fidelity, in-browser development platforms that support multi-process runtimes and networking.
Production fidelity: Ensure applications developed in sandboxes behave identically to production deployments thanks to CheerpOS, a high-fidelity kernel virtualisation.
Integrated dev servers: Run tools like SvelteKit or Vite directly in the browser and preview changes in real-time.
Instant shareable demos
BrowserPod's Portals uses virtualised HTTP services to provide a unique URL to demo your products or potential clients.
Live previews: Run a full-stack demo of your project in the user's browser and share a live link for cross-device access or stakeholder review.
No-installation experience: Allow users to explore complex software features with zero installation, reducing barriers to entry during the commercial investigation phase.
Serverless utilities and applications
BrowserPod can serve as a serious primitive for building backend services that do not need persistence.
Offload compute: Reduce your cloud computing bill by an order of magnitude by offloading complex executions to the end-user's device.
Secure data collection: Build and deploy serverless apps that store data locally during a session, ensuring data never leaves the administrator's device.
How BrowserPod Compares
Why choose BrowserPod
See how BrowserPod stacks up against other code sandbox solutions
| Feature | ![]() | ![]() | ![]() | |
|---|---|---|---|---|
| Run locally in browser | ||||
| Public URLs for services | ||||
| Full-stack environment support | ||||
| Max concurrent environments | Unlimited | Limited by quota | Limited by quota | Limited by quota |
| Price per hour of compute* | $0.01 | from $0.13 | from $0.08 | from $0.19 |
| Free usage | 1,000 free hours/month | $200 free credit | Up to $200 free credit | $30 free credits/month |
| Storage | Unlimited | First 5GB free | Charged per GiB/h | Charged per GiB/h |
| * 2vCPUs and 2GB RAM. | ||||



Latest Updates
Stay informed with BrowserPod news
Get the latest insights, announcements, and updates from our team

BrowserPod: universal in-browser sandbox powered by Wasm (starting with Node.js)

BrowserPod: WebAssembly in-browser code sandboxes for Node, Python, and Rails

BrowserPod: In-browser full-stack environments for IDEs and Agents via Wasm
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