WasmEdge (previously known as SSVM) is a lightweight, high-performance, and extensible WebAssembly runtime for cloud native, edge, and decentralized applications. It is the fastest Wasm VM today. WasmEdge is an official sandbox project hosted by the CNCF. Its use cases include serverless apps, embedded functions, microservices, smart contracts, and IoT devices.
🚀 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.
Checkout the application use cases or the technical highlights of WasmEdge.
- A Lightweight Design for High-performance Serverless Computing, published on IEEE Software, Jan 2021. https://arxiv.org/abs/2010.07115
- Performance Analysis for Arm vs. x86 CPUs in the Cloud, published on infoQ.com, Jan 2021. https://www.infoq.com/articles/arm-vs-x86-cloud-performance/
- WasmEdge is the fastest WebAssembly Runtime in Suborbital Reactr test suite, Dec 2021
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).
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, and the WasmEdge Tensorflow extension).
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.
- Embed WasmEdge into a host application
- Orchestrate and manage WasmEdge instances using container tools
- Run a WasmEdge app as a Dapr microservice
- Use Reactr to embed and extend WasmEdge functions in SaaS
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:
- Mailing list: Send an email to WasmEdge@googlegroups.com
- Slack: Join the #WasmEdge channel on the CNCF Slack
- Twitter: Follow @realwasmedge on Twitter
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 Thuesday of each month at 11PM Hong Kong Time/ 7AM PST.
Public meeting agenda/notes | Zoom link
