wasmer

wasmerio/wasmer is ranked 3,263 among these 8 peers; mlc-ai/mlc-llm is ranked 3,259.

Lightweight sandboxes for your apps and AI agents Wasmer runs your apps in *fast*, *secure*, and *lightweight sandboxes*: locally, in the cloud, or in your browser. You control file, network, and environment access. Fast startup with a small memory footprint. Python, JavaScript, Bash, and more from the registry. Add sandboxes to your app with the Wasmer SDK. Run your first sandbox Install the CLI on macOS or Linux: Windows and other installation options **Windows (PowerShell)** **Homebrew (macOS / Linux)** See the

installation guide for more options. Run Python in a sandbox: Or try a shell command and Cowsay: Wasmer downloads the package and caches it for future runs. Use to separate Wasmer options from the arguments passed to your program. To work with local files, grant access to a directory with ; enable host networking with when your program needs it. **No installation needed:** open wasmer. Wasmer SDK Create a sandbox, choose your tools, and run code directly in your app with

the Wasmer SDK. Install the SDK **JavaScript / TypeScript** (Node. js 20 or newer): Rust The Rust SDK currently uses a source dependency. Clone , then point your application at its directory: Follow the Rust setup guide for the required toolchain and workspace patches. Python The SDK's Python wheels support macOS and Linux on Intel and ARM64. Swift (iOS and macOS) Use Swift 6 or newer. The SDK supports macOS 12+ and iOS 27+; iOS apps require Xcode 27 or newer. Add

the package to your dependencies: Then add the product to your target's dependencies: In Xcode, you can instead add the repository URL, select as a revision, and choose the **WasmerSDK** product. SwiftPM downloads the prebuilt macOS binaries and iOS runtime resources. For iOS, set the deployment target to **iOS 27. 0** and allow local networking in your app's : Both platforms use and the same API. On iOS, the SDK manages a hidden ; your app does not need to display one

. See the Swift guide and iOS setup guide for more details. Run code in a sandbox **JavaScript / TypeScript** Save this as : Run it with . Python executes inside the sandbox; you don't need Python installed on the host. Python example Save this as : Run it with . Swift example (iOS and macOS) Use this code in an context: See the Swift guide for embedding in an iOS or macOS app and more examples. JavaScript in the browser Use the same JavaScript sandbox

API with the import. Your page needs cross-origin isolation ( and ) for worker-backed execution. Follow the browser setup guide or explore wasmer. Rust example See the Rust guide for workspace setup and more examples. Go further Build more with the sandbox API: **Commands**. Stream output and manage long-running tasks. Combine languages and packages in one sandbox. Run servers with explicit network access. See the language guides for platform support and capabilities, and the SDK examples for Python scripts

, an Edge. js HTTP server, PostgreSQL, and multiple tools sharing one sandbox. js-compatible apps | | | Bash | | | PHP | | | PostgreSQL | | | SQLite | | | FFmpeg