Oro Runtime

A native runtime for web applications.

Build UI with HTML/CSS, behavior with JavaScript, and import native capabilities as explicit ES modules under oro:* — without platform-specific application code.

Read the docs JavaScript APIs CLI GitHub

Hello world

Guide

hello/
  oro.toml
  copy-map.toml
  src/
    index.html
    main.js

oroc run .
oroc build .

globalThis.isOroRuntime === true when running inside Oro Runtime.

Programming model

The web platform is the UI toolkit. Oro Runtime adds an explicit capability layer (oro:*) plus a bundling story that feels like shipping a website.

Web standards

DOM, ES modules, fetch, URLs, WebCrypto, WebAssembly, and modern browser APIs — because your app runs inside the platform WebView.

Project layout

Explicit capabilities

Import native functionality as ES modules under oro:*. Start with oro:application, oro:window, and oro:hooks.

Module index

Bundle and ship

Define what enters your bundle via copy_map. Build outputs land under ./build by default.

Build and package

Docs map

A short path through the CLI, configuration, and the full JavaScript API surface.

Start

Hello world, reading path, and the runtime’s programming model.

Docs

Guides

Project layout, build and package, and windows and messaging.

Guides

CLI

oroc commands, flags, environment variables, and workflow helpers.

CLI

Configuration

oro.toml, .ororc, and copy_map.

Config

JavaScript APIs

Overview, module index, and the exhaustive list of importable oro:* specifiers.

API