---
id: create-an-app
title: Create an App
description: Documentation on Creating an App
---

To get set up quickly with your own Backstage project you can create a Backstage
App.

A Backstage App is a monorepo setup with `lerna` that includes everything you
need to run Backstage in your own environment.

## Create an app

To create a Backstage app, you will need to have
[NodeJS](https://nodejs.org/en/download/) Active LTS Release installed
(currently v12).

Backstage provides a utility for creating new apps. It guides you through the
initial setup of selecting the name of the app and a database for the backend.
The database options are either SQLite or PostgreSQL, where the latter requires
you to set up a separate database instance. If in doubt, choose SQLite, but
don't worry about the choice, it's easy to change later!

The easiest way to run the create app package is with `npx`:

```bash
npx @backstage/create-app
```

This will create a new Backstage App inside the current folder. The name of the
app-folder is the name that was provided when prompted.

<p align='center'>
  <img src='../assets/getting-started/create-app_output.png' width='600' alt='create app'>
</p>

Inside that directory, it will generate all the files and folder structure
needed for you to run your app.

### General folder structure

Below is a simplified layout of the files and folders generated when creating an
app.

```
app
├── app-config.yaml
├── lerna.json
├── package.json
└── packages
    ├── app
    └── backend
```

- **app-config.yaml**: Main configuration file for the app. See
  [Configuration](https://backstage.io/docs/conf/) for more information.
- **lerna.json**: Contains information about workspaces and other lerna
  configuration needed for the monorepo setup.
- **package.json**: Root package.json for the project. _Note: Be sure that you
  don't add any npm dependencies here as they probably should be installed in
  the intended workspace rather than in the root._
- **packages/**: Lerna leaf packages or "workspaces". Everything here is going
  to be a separate package, managed by lerna.
- **packages/app/**: An fully functioning Backstage frontend app, that acts as a
  good starting point for you to get to know Backstage.
- **packages/backend/**: We include a backend that helps power features such as
  [Authentication](https://backstage.io/docs/auth/),
  [Software Catalog](https://backstage.io/docs/features/software-catalog/software-catalog-overview),
  [Software Templates](https://backstage.io/docs/features/software-templates/software-templates-index)
  and [TechDocs](https://backstage.io/docs/features/techdocs/techdocs-overview)
  amongst other things.

## Run the app

When the installation is complete you can open the app folder and start the app.

```bash
cd my-backstage-app
yarn start
```

_When `yarn start` is ready it should open up a browser window displaying your
app, if not you can navigate to `http://localhost:3000`._

In most cases you will want to start the backend as well, as it is required for
the catalog to work, along with many other plugins.

To start the backend, open a separate terminal session and run the following in
the root directory:

```bash
yarn workspace backend start
```
