infra · tooling

WebAssembly

7 production projects and 1 rule set built with WebAssembly.

Production projects

Full-Stack Rust Web Framework Classic Leptos Leptos separates its reactive graph, renderer and server-function RPC into independent crates and keeps the core server-agnostic, so the same components run as SSR HTML or WebAssembly, and Axum or Actix Web plug in through thin integration crates.
Cross-Platform Rust App Framework Classic Dioxus Dioxus keeps one virtual DOM and component model and swaps renderers per platform (WebAssembly, WebView, SSR, LiveView, native), while its own dx CLI handles hot-patching, asset bundling and packaging for every target.
Open-Source Payments Orchestration Classic Hyperswitch Hyperswitch runs a panic-averse Rust router on Actix Web with Redis absorbing hot writes and a drainer persisting them to PostgreSQL, while a routing DSL that also compiles to WebAssembly keeps processor selection consistent between server and browser.
Browser-Based 3D Geospatial Intelligence Simulator Hybrid God's Eye View All rendering runs client-side on Cesium with plain JavaScript modules, while a thin localhost Node proxy per data provider keeps keys out of the browser, so the whole product installs and runs locally with no hosted backend or database.
Local-First Privacy Workspace Hybrid AppFlowy Flutter delivers five platforms from one codebase while a Rust core owns storage, CRDT documents, search and AI behind a protobuf FFI boundary, keeping data local by default and sync optional.
Multi-Model Real-Time Database Classic SurrealDB SurrealDB puts document, graph, relational and vector models behind one SurrealQL engine in a single Rust binary that runs embedded, in the browser via WebAssembly, or as a server over pluggable storage (RocksDB, SurrealKV, TiKV), with WebSocket live queries and row-level permissions built into the core.
Design & Prototyping Platform Classic Penpot Splitting the backend, frontend, exporter, media processing, and MCP server into independently managed pnpm/Clojure projects, and moving canvas rendering into a Rust/WebAssembly engine, lets each heavy or performance-sensitive piece evolve and scale on its own instead of living inside one ClojureScript monolith.

Often used with WebAssembly

Every rule ships as files

AGENTS.md rules and agent skills with WebAssembly

rust-leptos-fullstack/AGENTS.mdLeptos Full-Stack Rust (SSR + Hydration on Axum)Full-stack Rust web app rules: Leptos 0.8 SSR with hydration, server functions on Axum, sqlx + PostgreSQL, cargo-leptos and Tailwind, written for AI agents. advanced

Questions about WebAssembly

How many production projects use WebAssembly?

7 verified production projects in the STACK IT FAST directory use WebAssembly, each with a full architecture breakdown.

What is WebAssembly most often used with?

Across projects in the directory, WebAssembly is most commonly paired with Rust, Tokio, Docker.

Is there an AGENTS.md rule or Claude Code skill for WebAssembly?

Yes — Leptos Full-Stack Rust (SSR + Hydration on Axum) includes a full AGENTS.md, CLAUDE.md, Cursor .mdc rule set and an installable SKILL.md covering WebAssembly.