extism

📦️ A fast, secure MCP server that extends its capabilities through WebAssembly plugins.

Run Extism WebAssembly plug-ins / functions from JavaScript (supports major browsers, Node.js, Deno, Bun, and Cloudflare Workers)

Extism Plug-in Development Kit (PDK) for Go

Write Extism plugins in JavaScript & TypeScript

A new DNS proxy designed for simplicity, security and extensibility with WebAssembly plugins.

A tiny HTTP server for Extism Wasm Plug-ins | a cloud-native runtime for Extism Wasm nanoservices plug-ins

Extism Java Host SDK enables Java programs to embed and run WebAssembly plugins.

Extism PDK for the MoonBit programming language.

Wasm UDFs for Postgres, implemented as a TLE on plv8 using Extism

a cross platform dynamic menu

Write Extism plugins in Python

A WASM Binary builder for writing your Wasm plugins

A lightweight WAMR backend for Extism

Open desktop runtime for AI agents, tools, and integrations — MCP servers, sandboxed WASM tools, and permissioned add-ons in one workspace.

Extism plug-ins as a CI pipeline in a GitHub Action

Extism Plug-in Development Kit (PDK) for C

Using WASM to write UDFs in Apache Spark

The framework for building with WebAssembly (wasm). Easily load wasm modules, move data, call functions, and build extensible apps.

A Go/WASM plugin that auto-generates Spotify-style smart playlists — Daily Mixes, On Repeat, Release Radar, Artist Radio, and more.