# Using the catalogue

> Deploy a ready-made self-hosted service in a few clicks.

Source: https://quasar.achaverot.fr/docs/catalogue/using/

The catalogue holds about 60 self-hosted services, sorted into categories: media, files, notes, dashboards, security, development, analytics, databases, game servers, and more.

## Deploying from the catalogue

1. Click **New application**, then **See the catalogue**.
2. Search for a service, or filter by category.
3. If the entry asks questions (a version, a port…), answer them and click **Use these settings**.
4. The new-application form is now filled in. Check it, then click **Create and deploy**.

What the catalogue does for you:

- **Secrets are generated**: passwords and keys are random values, unique to your deployment.
- **The public address is filled in**: settings such as `URL` or `BASE_URL` are set from the subdomain.
- **Whole stacks are ready**: Immich, Nextcloud, Authentik and Paperless come with their database and cache. The app waits for its database to be ready, so there is no restart loop on the first start.

## Game servers and databases

Some services don't speak HTTP: game servers (Minecraft, Valheim…) and databases.

Traefik only routes HTTP on ports 80 and 443, so these services **publish their own port** on the server. Connect to them with the **server's IP address and that port**, not with the subdomain.

Two such servers can't use the same host port. Quasar refuses the second one and names the application already using the port.

## Adding your own entries

You can add your own entries and categories to the catalogue. See [custom catalogues](/catalogue/custom/).