Webassembly GitHub Repositories (2026) · Open Source Tools

Offline, privacy-first grammar checker. Fast, open-source, Rust-powered

A SQL database in Rust: SQLite-compatible, now also speaking Postgres (experimental). The LLVM of databases.

Cross-platform UI framework for Rust: styled property system, data binding, XAML, control themes and a composition renderer. A port of Avalonia.

Business intelligence as code: build fast, interactive data visualizations in SQL and markdown

🚀 Fast and lightweight sandboxes for your apps and AI agents

A data visualization and analytics component, especially well-suited for large and/or streaming datasets.

Codex plugin for OpenPencil — an interactive Rust/WASM canvas for AI-assisted UI design. Create editable .op files from prompts, refine selected elements, generate image assets, and install with one prompt on macOS, Windows, and Linux.

FluentQt (Fluent-Qt): Fluent / WinUI-style Qt Widgets UI components and Gallery for native C++ desktop apps, with optional PySide6 bindings and WebAssembly.

PocketJS: create UI on every screen you love. JavaScript components drawn as native pixels on handhelds, desktops and embedded screens. Also home to Pocket3D and MicroTS.

Rhai - An embedded scripting language for Rust.

Write Cloudflare Workers in 100% Rust via WebAssembly

Parametric CAD for 3D printing, in your browser. Offline version for your Mac, Windows or Linux computer is also available.

Tiny, fast, Linux-compatible sandboxes. Powered by WebAssembly.

wazero: the zero dependency WebAssembly runtime for Go developers

Play Morrowind in your browser — the OpenMW engine compiled to WebAssembly, now with multiplayer and a cloud locker for your own game data.

Subtitle any video without uploading it. Whisper, translation, styling and burn-in — all local, in the browser, on the desktop, or from the command line.

Build fast web applications with Rust.

Open-source, local-first video editor where creators and AI agents edit the same real timeline.

A lightweight WebAssembly runtime that is fast, secure, and standards-compliant

Optimizer and compiler/toolchain library for WebAssembly