Server Mode

wasmrun

A built-in dev server with live reload and browser-based module inspection for full WASM projects.

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Exec Mode

wasmrun exec

Run .wasm files natively with the built-in interpreter and WASI support. No browser, no server.

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OS Mode

wasmrun os

A sandboxed, browser-based execution environment with a virtual filesystem and network isolation.

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Multi-language

Rust, Go, Python, C/C++ and AssemblyScript out of the box.

Plugin architecture

Extensible system for language support and build tools.

Live reload

File watching with automatic recompilation as you save.

Native interpreter

Built-in WASM interpreter with WASI syscall support.

Sandboxed

Isolated execution with per-session filesystems and limits.

Zero config

Auto-detects your project type. Sensible defaults everywhere.