> ## Documentation Index
> Fetch the complete documentation index at: https://docs.replit.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Users & Auth

> Manage the people who sign in to your app and choose how they sign in, with Replit Auth or Clerk.

The Users & Auth tool manages the people who use your app and how they sign in. Open **Users & Auth** under **Replit Cloud** in the **Tools** pane.

The tool has two tabs:

* **Users**: Everyone who has signed in to your app, with their name and last sign-in time. Search the list to find a specific user.
* **Configure**: Your app's sign-in experience: the login screen's name and icon, which sign-in providers your app offers, and the session secret.

<Note>
  This tool manages your **app's** users: the people who sign up and log in to what you built. To control who can open your published app at all, see [Who can access your app](/features/publishing/private-deployments).
</Note>

## Choose your auth system

* **[Replit Auth](/features/auth-and-identity/authentication)**: The zero-setup option. Ask Agent to add Replit Auth, and your app gets a prebuilt login page, user management, and secure sessions with no configuration.
* **[Clerk](/features/auth-and-identity/clerk-auth)**: A full-featured authentication service for apps that need more control, such as custom sign-in flows and your own OAuth branding. Set up [custom sign-in providers](/features/auth-and-identity/sign-in-providers) for Google, GitHub, Apple, and X.

## Next steps

* [Replit Auth](/features/auth-and-identity/authentication): Zero-setup sign-in for your app.
* [Clerk Auth](/features/auth-and-identity/clerk-auth): Full-featured authentication.
* [Sign-in providers](/features/auth-and-identity/sign-in-providers): Bring your own OAuth credentials.