Today, we're extending Cloudflare Workers with support for WebAssembly. All Workers customers can now augment their applications with WASM at no additional cost.
cloudflare/cloudflare-os
Agent workspace built on Cloudflare Workers for creating documents, building apps, and running agents with your company’s context and systems.
WebAssembly Core Specification
Please check the errata for any errors or issues reported since publication.
WebAssembly browser preview · V8
WebAssembly or Wasm is a new runtime and compilation target for the web, now available behind a flag in Chrome Canary!
Introducing Kitesurf: The agent-first browser that runs in V8 isolates on Cloudflare Workers
We should be giving all agents tools that excel at what’s important for an AI model. Kitesurf is Cloudflare’s new stateless, highly scalable, and cost-effective web browser that runs entirely on top of Workers and was designed specifically for the Agentic Cloud.
A Tale of Three WebAssembly Runtimes
Walking through the implementation of three different WebAssembly runtimes from scratch
A peek into the WebAssembly Browser Preview
Following the introduction of asm.js, we have been working with other browser vendors including Mozilla, Google, Apple, along with the rest of the WebAssembly community group, to push the performance boundary of the web with WebAssembly. WebAssembly is a new, portable, size- and load-time-efficient binary compiler target, which promises near-native performance on the web. As
WebAssembly Browser Preview – Mozilla Hacks - the Web developer blog
Since the last WebAssembly milestone we reached in March, we’ve been hard at work in the WebAssembly Community Group to define a standard and to implement that standard in our ...
Kenton Varda on Twitter / X
Today we are releasing Cloudflare OS, a chatbot with connectors, just like every other tech company is doing.Except actually, it's different. This is a remake of Sandstorm[.]io, my startup from 10 years ago, except this time built on Cloudflare Workers (the platform I've spent…— Kenton Varda (@KentonVarda) August 5, 2026
workerd/src/workerd/io/container.capnp at 7bba5200673b4f014b9b7ff0b729e6ad0f027962 · cloudflare/workerd
The JavaScript / Wasm runtime that powers Cloudflare Workers - cloudflare/workerd
Introducing the Fiberplane Playground for Cloudflare Agents
We're launching an Agents Playground for the Cloudflare Agents SDK
extism/extism
The framework for building with WebAssembly (wasm). Easily & securely load wasm modules, move data, call functions, and build extensible apps.
extism/extism
The framework for building with WebAssembly (wasm). Easily & securely load wasm modules, move data, call functions, and build extensible apps.
workerd/src/workerd/io/container.capnp at a7f74e91789d1b127081cb88a1098fe705ddb017 · cloudflare/workerd
The JavaScript / Wasm runtime that powers Cloudflare Workers - cloudflare/workerd
WebAssembly
WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications.