Rust powered React framework

Axum powered React server-side rendering

bun create ossido my-app

Rust backend

Server-side rendering, static generation, and API routes - all handled by a fast, type-safe Rust core.

React frontend

The full power and familiar simplicity of React, driving every view on the client.

Tuono roots

A modern framework built on the proven foundations of Tuono - Rust and React, together.

Rust backend

A fast, type-safe core - powered by Axum

Rendering, routing, and your API all run on one Rust core. Write your server logic once, in Rust, and ship it as a single binary.

Streaming SSRReact is rendered on the server and streamed as HTML, so the first paint lands fast.
Static generationPre-render whole routes to static HTML + JSON with output: 'static'.
API routes in RustDrop endpoints in beside your pages with #[api(GET)] - type-safe, JSON and WebSockets built in.
One-binary deployThe Axum server bundles your React app; there's a single artifact to ship.

Server-side rendering · src/routes/page.rs

rust

use serde::Serialize;
use ossido::{handler, Props, Request};

#[Props]
struct HomeProps {
    subtitle: String,
}

// Runs on the server; the returned props are rendered into the HTML.
#[handler]
async fn get_server_side_props(_req: Request) -> HomeProps {
    HomeProps {
        subtitle: "Rust + React, server-rendered".into(),
    }
}

API route · src/routes/api/health_check.rs

rust

use ossido::{api, Request};
use ossido::axum::http::StatusCode;

#[api(GET)]
pub async fn health_check(_req: Request) -> StatusCode {
    StatusCode::OK
}

React frontend

The React you already know

Every view is a plain React 19 component. File-based routing, a Vite dev server, and instant hot-reload keep the framework out of your way.

React 19The latest React and its whole ecosystem - Actions, Suspense, hooks.
File-based routingpage.tsx and layout.tsx map straight to URLs, Next.js-style.
Vite + hot reloadA fast dev server with HMR; your edits show up instantly.
Typed & styledNative TypeScript, Tailwind, CSS modules and MDX, out of the box.

tsx

import type { OssidoPage } from '@ossido-labs/ossido/types';

// src/routes/about/page.tsx  ->  /about
const AboutPage: OssidoPage<'/about'> = () => {
  return <h1 className="text-2xl font-bold">About Ossido</h1>;
};

export default AboutPage;

Tuono roots

Built on the shoulders of Tuono

Ossido began as a fork of Tuono - the Rust-and-React framework - and carries its development forward. The proven architecture stays; it's simply maintained again. (Tuono is Italian for 'thunder'; ossido, for 'oxide' - a nod to the Rust core.)

Proven architectureThe same file-based routing and Rust + React model Tuono pioneered.
Actively maintainedPicking up where the now-unmaintained Tuono left off.
Familiar by designKnow Tuono? Then you already know Ossido.

import { defineConfig } from '@ossido-labs/ossido';

export default defineConfig({
  // pre-render every route to static HTML + JSON
  output: 'static',
});

A fast, type-safe core - powered by Axum

Rendering, routing, and your API all run on one Rust core. Write your server logic once, in Rust, and ship it as a single binary.

Streaming SSRReact is rendered on the server and streamed as HTML, so the first paint lands fast.

Static generationPre-render whole routes to static HTML + JSON with output: 'static'.

API routes in RustDrop endpoints in beside your pages with #[api(GET)] - type-safe, JSON and WebSockets built in.

One-binary deployThe Axum server bundles your React app; there's a single artifact to ship.

use serde::Serialize; use ossido::{handler, Props, Request}; #[Props] struct HomeProps { subtitle: String, } // Runs on the server; the returned props are rendered into the HTML. #[handler] async fn get_server_side_props(_req: Request) -> HomeProps { HomeProps { subtitle: "Rust + React, server-rendered".into(), } }

The React you already know

Every view is a plain React 19 component. File-based routing, a Vite dev server, and instant hot-reload keep the framework out of your way.

React 19The latest React and its whole ecosystem - Actions, Suspense, hooks.

File-based routingpage.tsx and layout.tsx map straight to URLs, Next.js-style.

Vite + hot reloadA fast dev server with HMR; your edits show up instantly.

Typed & styledNative TypeScript, Tailwind, CSS modules and MDX, out of the box.

import type { OssidoPage } from '@ossido-labs/ossido/types'; // src/routes/about/page.tsx -> /about const AboutPage: OssidoPage<'/about'> = () => { return <h1 className="text-2xl font-bold">About Ossido</h1>; }; export default AboutPage;

Built on the shoulders of Tuono

Proven architectureThe same file-based routing and Rust + React model Tuono pioneered.

Actively maintainedPicking up where the now-unmaintained Tuono left off.

Familiar by designKnow Tuono? Then you already know Ossido.