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

# Installation

> Download and install Postchi on macOS, Windows, or Linux.

Postchi is a desktop application available at [getpostchi.com](https://getpostchi.com). It is available on all major operating systems.

<Info>
  Postchi has a free tier and a paid tier. The free version lets you explore the core features. The paid version unlocks the full feature set. Visit [getpostchi.com](https://getpostchi.com/pricing) to compare plans.
</Info>

## Install Postchi

<Tabs>
  <Tab title="macOS">
    1. Go to [getpostchi.com](https://getpostchi.com/download) and download the macOS installer (`.dmg`).
    2. Open the `.dmg` file and drag **Postchi** into your **Applications** folder.
    3. Launch Postchi from **Applications** or Spotlight.

    <Note>
      On first launch, macOS may show a security prompt because Postchi is downloaded from the internet. Click **Open Anyway** to proceed.
    </Note>
  </Tab>

  <Tab title="Windows">
    1. Go to [getpostchi.com](https://getpostchi.com) and download the Windows installer (`.msi` or `.exe`).
    2. Run the installer and follow the on-screen prompts.
    3. Launch Postchi from the Start menu or the desktop shortcut.

    <Note>
      Windows may display a SmartScreen warning for unsigned installers. Click **More info → Run anyway** to proceed with the installation.
    </Note>
  </Tab>

  <Tab title="Linux">
    1. Go to [getpostchi.com](https://getpostchi.com) and download the package for your distribution (`.AppImage`, `.deb`, or `.rpm`).
    2. Install or run the package:

    ```bash theme={null}
    # Debian / Ubuntu
    sudo dpkg -i postchi_*.deb

    # Fedora / RHEL
    sudo rpm -i postchi_*.rpm

    # AppImage (any distribution)
    chmod +x Postchi_*.AppImage
    ./Postchi_*.AppImage
    ```

    3. Launch Postchi from your application menu or by running the binary directly.
  </Tab>
</Tabs>

## Automatic updates

Postchi includes a built-in updater. When a new version is available, Postchi notifies you and can download and apply the update automatically. You do not need to revisit the website to stay current.

## Next steps

<Card title="Quick start" icon="rocket" href="/quickstart">
  Create a project and send your first request.
</Card>