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WasmEdge is a lightweight, high-performance, and extensible WebAssembly runtime for cloud native, edge, and decentralized applications. It powers serverless apps, embedded functions, microservices, smart contracts, and IoT devices.



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WasmEdge is a lightweight, high-performance, and extensible WebAssembly runtime. It is the fastest Wasm VM today. WasmEdge is an official sandbox project hosted by the CNCF. Its use cases include modern web application architectures (Isomorphic & Jamstack applications), microservices on the edge cloud, serverless SaaS APIs, embedded functions, smart contracts, and smart devices.

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Quick start guides

🚀 Install WasmEdge
🤖 Build and contribute to WasmEdge
⌨️ Run a standalone Wasm program or a JavaScript program from CLI or Docker
🔌 Embed a Wasm function in your Node.js, Go, Rust, or C app
🛠 Manage and orchestrate Wasm runtimes using Kubernetes, data streaming frameworks, and blockchains
📚 Check out our official documentation


The WasmEdge Runtime provides a well-defined execution sandbox for its contained WebAssembly bytecode program. The runtime offers isolation and protection for operating system resources (e.g., file system, sockets, environment variables, processes) and memory space. The most important use case for WasmEdge is to safely execute user-defined or community-contributed code as plug-ins in a software product (e.g., SaaS, software-defined vehicles, edge nodes, or even blockchain nodes). It enables third-party developers, vendors, suppliers, and community members to extend and customize the software product. Learn more here



WasmEdge can run standard WebAssembly bytecode programs compiled from C/C++, Rust, Swift, AssemblyScript, or Kotlin source code. It runs JavaScript, including 3rd party ES6, CJS, and NPM modules, in a secure, fast, lightweight, portable, and containerized sandbox. It also supports mixing of those languages (e.g., to use Rust to implement a JavaScript API), the Fetch API, and Server-side Rendering (SSR) functions on edge servers.

WasmEdge supports all standard WebAssembly features and many proposed extensions. It also supports a number of extensions tailored for cloud-native and edge computing uses (e.g., the WasmEdge network sockets,Postgres and MySQL-baesed database driver, and the WasmEdge Tensorflow extension).

Learn more about technical highlights of WasmEdge.

Integrations and management

WasmEdge and its contained wasm program can be started from the CLI as a new process, or from a existing process. If started from an existing process (e.g., from a running Node.js or Go or Rust program), WasmEdge will simply run inside the process as a function. Currently, WasmEdge is not yet thread-safe. In order to use WasmEdge in your own application or cloud-native frameworks, please refer to the guides below.



If you would like to contribute to the WasmEdge project, please refer to our CONTRIBUTING document for details. If you are looking for ideas, checkout our "help wanted" issues!


If you have any questions, feel free to open a GitHub issue on a related project or to join the following channels:

Community Meeting

We host a monthly community meeting to showcase new features, demo new use cases, and a Q&A part. Everyone is welcome!

Time: The first Tuesday of each month at 11PM Hong Kong Time/ 7AM PST.

Public meeting agenda/notes | Zoom link


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