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bytecodealliance/wasmtime

A lightweight WebAssembly runtime that is fast, secure, and standards-compliant

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What it does

Wasmtime is a runtime engine that lets developers run WebAssembly programs — a universal, sandboxed code format that works across different operating systems and hardware. Think of it as a secure, lightweight virtual machine that can execute code written in almost any programming language, isolated from the rest of your system for safety.

Why it matters

As software increasingly runs across diverse environments — cloud, edge, IoT devices — WebAssembly runtimes like Wasmtime let builders deploy one codebase anywhere without rewriting it, while the built-in security sandbox dramatically reduces risk from third-party code. With nearly 18,000 stars and backing from the Bytecode Alliance, this is becoming foundational infrastructure for the next generation of plugin systems, multi-tenant platforms, and portable applications.

30Active

On the radar — signal detected

Stars
17.9k
Forks
1.7k
Contributors
740
Language
Rust

Score updated Apr 4, 2026

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