Take WebAssembly to production & keep it there.

Introducing... 👀Observe SDK

The Observe SDK provides first-of-kind observability tools for WebAssembly (Wasm), enabling continuous monitoring of WebAssembly code as it executes within a runtime.

Solutions for Wasm users in:

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Running WebAssembly in the cloud or on the edge comes with incredible benefits, as well as unique challenges.

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Secure, isolated execution paired with a universal binary format makes plug-ins a natural fit for WebAssembly.

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Browser Tech

Despite being the original home for WebAssembly, the browser can still be a complex environment to integrate with.

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Web3 & Blockchain

Powerful and programmable networks leverage WebAssembly for smart contract execution.


Extism is the open source, universal plug-in system. Make all software programmable. Powered by WebAssembly.


Modsurfer provides ops & dev teams with a system-of-record + diagnostics application to search, browse, and investigate modules.

From the Blog

An exploration of how Extism makes it easy to use WebAssembly

Why Extism?

by: Rob Wong


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WASMCon 2023: A Rising Tide

by: Dominique Saulet, Chris Dickinson


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Exploring how to run formally verified code in a WebAssembly sandbox

Formally verified WebAssembly using Coq and Extism

by: Zach Shipko


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Understanding how to use WASI Command and Reactor WebAssembly Modules

WASI Command and Reactor Modules

by: Rob Wong, Zach Shipko, Gavin Hayes


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Running Extism Plugins in PostgreSQL

Bringing WebAssembly to PostgreSQL using Extism

by: Muhammad Azeez


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Why is it hard to use existing observability tools in Wasm?

Observability Challenges in Wasm

by: Benjamin Eckel


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Can we rebuild LangChain using Extism?

Crafting Generative AI Apps with WebAssembly

by: Dominique Saulet


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User-Defined Functions: powered by WebAssembly

How WebAssembly is Eating the Database, One UDF At a Time

by: Dominique Saulet, Steve Manuel


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