Extism

Extism

Dylibso
WordCraft

WordCraft

ArtCraft
+
+

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About

Extism is an open-source, universal plug-in system to make all software programmable, and it's powered by WebAssembly. In-depth documentation, constantly updated as the project grows. 15+ officially supported Host SDKs, making Extism embeddable in the most popular languages. 7+ officially supported PDKs, to write plug-ins in whichever language a developer would like. A growing set of runtime features makes Extism an excellent plug-in system for apps of all types & sizes. Fully-featured canonical reference demo with Elixir host SDK, and plugins in Rust, TypeScript, & Javascript. Implementation of a turn-based multiplayer game platform and games included to play and review. Games are implemented as WebAssembly modules containing a specific set of exports. Check out the source code on GitHub, download the installer, and get started. 100% open-source code. Fork it, experiment, & run your own game server.

About

WordCraft is a free, open-source word processor for people who write and format documents. Its ribbon interface provides editing and page-design tools for styles, tables, images, citations, footnotes, tables of contents, comments, and tracked changes, along with spelling and grammar checks and mail merge. It reads and writes DOCX, opens older DOC files, works with ODT, RTF, HTML, Markdown, LaTeX, and plain text, and exports PDF and page images. WordCraft runs as a native application on Windows, macOS, and Linux, and also has a WebAssembly edition that can be hosted on a static server. Its command-line tools, JSON control channel, and Model Context Protocol server support scripted and AI-agent document workflows. The software is in alpha, so file compatibility and feature coverage continue to develop.

Platforms Supported

Windows Not Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers searching for a free solution to write plug-ins for apps of all types and sizes

Audience

People who write, edit, and format documents on desktop or in a browser, as well as developers and AI-agent builders automating document workflows.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version Supported
Free Trial Not Supported

Pricing

$0
Free to use; open-source software dual-licensed under MIT or Apache-2.0.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Not Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Dylibso
United States
dylibso.com/products/extism/

Company Information

ArtCraft
github.com/storytold/wordcraft

Alternatives

AssemblyScript

AssemblyScript

The AssemblyScript Project

Alternatives

Apache OpenOffice

Apache OpenOffice

The Apache Software Foundation
4.2 out of 5 stars
Google Docs

Google Docs

Google
4.9 out of 5 stars
Nakama

Nakama

Heroic Labs
LibreOffice

LibreOffice

The Document Foundation
5.0 out of 5 stars
Rio Terminal

Rio Terminal

5.0 out of 5 stars

Categories

Categories

Word Processors Supported

Integrations

.NET Supported
AssemblyScript Supported
C++ Supported
Claude Code Not Supported
Elixir Supported
Erlang Supported
Go Supported
Haskell Supported
Java Supported
JavaScript Supported
Model Context Protocol (MCP) Not Supported
Node.js Supported
OCaml Supported
PHP Supported
Python Supported
R Supported
Rust Supported
TypeScript Supported
WebAssembly Supported
Zig Supported

Integrations

.NET Not Supported
AssemblyScript Not Supported
C++ Not Supported
Claude Code Supported
Elixir Not Supported
Erlang Not Supported
Go Not Supported
Haskell Not Supported
Java Not Supported
JavaScript Not Supported
Model Context Protocol (MCP) Supported
Node.js Not Supported
OCaml Not Supported
PHP Not Supported
Python Not Supported
R Not Supported
Rust Not Supported
TypeScript Not Supported
WebAssembly Not Supported
Zig Not Supported
Claim Extism and update features and information
Claim Extism and update features and information
Claim WordCraft and update features and information
Claim WordCraft and update features and information