Supported Frameworks

Varity Team Core Contributors Updated May 2026

Varity automatically detects your framework when you run varitykit app deploy. You do not need to specify your framework manually.

Supported Frameworks

The following frameworks work today. Varity detects them from your project files and configures hosting automatically.

JavaScript and TypeScript

Next.js

Full-stack React framework. Static exports and server-rendered apps both work.

pipx install varitykit
varitykit app deploy

React

Client-side React apps built with Vite or Create React App.

pipx install varitykit
varitykit app deploy

Vue

Vue 3 single-page applications.

pipx install varitykit
varitykit app deploy

Astro

Astro apps, including static documentation or content sites.

pipx install varitykit
varitykit app deploy

Qwik

Qwik and QwikCity projects.

pipx install varitykit
varitykit app deploy

Vite SPA

Vite projects are auto-detected and deployed as static apps.

pipx install varitykit
varitykit app deploy

Express

Node.js HTTP server with Express.

pipx install varitykit
varitykit app deploy

Fastify

High-performance Node.js API server.

pipx install varitykit
varitykit app deploy

Nest.js

Opinionated Node.js framework for scalable server-side apps.

pipx install varitykit
varitykit app deploy

Koa

Lightweight Node.js middleware framework.

pipx install varitykit
varitykit app deploy

Hono

Ultra-fast edge-friendly web framework for Node.js.

pipx install varitykit
varitykit app deploy

Python

FastAPI

Modern async Python API framework.

pipx install varitykit
varitykit app deploy

Django

Full-featured Python web framework.

pipx install varitykit
varitykit app deploy

Flask

Lightweight Python web framework.

pipx install varitykit
varitykit app deploy

Not Yet Supported

The following languages and frameworks are not supported in the current beta. Deploying them will fail with a clear error message that includes a link to request support.

Language / Framework	Status
Go	Not supported
Rust	Not supported
Ruby / Rails	Not supported
Elixir / Phoenix	Not supported
Java / Spring	Not supported
Kotlin	Not supported
Deno	Not supported
PHP / Laravel	Not supported
C# / .NET	Not supported

If your framework is in this list, varitykit app deploy will return an error like:

ProjectDetectionError: Found go.mod - Go deployments are not yet supported.
Varity currently supports: Next.js, Astro, React, Vue, Node.js (Express/Fastify/NestJS/Koa/Hono), Python (FastAPI/Django/Flask).
Request Go support at https://github.com/varity-labs

No deployment is started and no charges are incurred.

How Framework Detection Works

When you run varitykit app deploy, Varity scans your project directory for these signals:

Signal	Detected As
`package.json` with `next` dependency	Next.js
`package.json` with `astro` dependency	Astro
`package.json` with `react` (no Next.js)	React
`package.json` with `vue`	Vue
`package.json` with `@builder.io/qwik` or `@builder.io/qwik-city`	Qwik
`package.json` with `vite`	Vite SPA
`package.json` with `express`	Express
`package.json` with `fastify`	Fastify
`package.json` with `@nestjs/core`	Nest.js
`package.json` with `koa`	Koa
`package.json` with `hono`	Hono
`requirements.txt` or `pyproject.toml`	Python project
`package.json` with `scripts.start` and no known framework	Node.js

Detection happens in under a second and requires no configuration from you.

Static vs. Dynamic Hosting

Varity also decides how to host your app based on what it detects:

App Type	Hosting Mode
React or Vue SPA (no server)	Static hosting
Next.js with `output: 'export'` in config	Static hosting
Next.js with server features	Dynamic hosting
Express, Fastify, Koa, Hono, Nest.js	Dynamic hosting
FastAPI, Django, Flask	Dynamic hosting

You can override the default with a flag:

varitykit app deploy --hosting static
varitykit app deploy --hosting dynamic

Supported Frameworks