package icon

crocson

Easily and securely send things from one computer to another
crocson — croc for Android, Windows, Linux, macOS.

File transfer from sender to receiver
- Via relay without port forwarding
- Desktop: drag-and-drop, command line, stdin pipe, queue holds only file and directory references
- Android: "Share" and "Open with" from file managers

WebDAV — two-way file transfer
- Built-in HTTP/HTTPS server
- File browsing via browser, streaming audio/video
- Tunneling through encrypted tunnel

Chat
- Web chat with session history
- Video calls, video messages, desktop screen sharing
- Server-side recording of webcam/microphone/screenshots (WebM/MP4/PNG) with chat publishing

Security
- End-to-end encryption (PAKE), one-time passwords (TOTP)
- Secret from input field or CROC_SECRET
- Choice of elliptic curve, relay password not disclosed to the other party

QR code and Deep Links
- QR code generation/scanning, support for Android scanners
- Deep Links for settings and WebDAV

Relay profiles
- Switching, local management from GUI or CLI
- Proxy: SOCKS5 (Tor), HTTP

Transfer settings
- .gitignore, file overwrite, compression, protection from deletion via WebDAV link
- Multiplexing, folder ZIP, speed limit

Interface
- Themes: system/light/grey/dark/black
- Font selection, 5 languages

CLI mode
- Pipes, text sending, transfer resuming, quiet mode

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.11.77 (2014) suggested Added on Jul 28, 2026

    x86_64

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "mediaPlayback"
      Allows the app to make use of foreground services with the type "mediaPlayback"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.

    Download APK 43 MiB PGP Signature | Build Log

  • Version 1.11.77 (2013) - Added on Jul 28, 2026

    x86

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "mediaPlayback"
      Allows the app to make use of foreground services with the type "mediaPlayback"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.

    Download APK 40 MiB PGP Signature | Build Log

  • Version 1.11.77 (2012) - Added on Jul 28, 2026

    arm64-v8a

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "mediaPlayback"
      Allows the app to make use of foreground services with the type "mediaPlayback"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.

    Download APK 42 MiB PGP Signature | Build Log

  • Version 1.11.77 (2011) - Added on Jul 28, 2026

    armeabi-v7a

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "mediaPlayback"
      Allows the app to make use of foreground services with the type "mediaPlayback"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.

    Download APK 40 MiB PGP Signature | Build Log

  • Version 1.11.76 (2009) - Added on Jul 19, 2026

    x86_64

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "mediaPlayback"
      Allows the app to make use of foreground services with the type "mediaPlayback"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.

    Download APK 43 MiB PGP Signature | Build Log

  • Version 1.11.76 (2008) - Added on Jul 19, 2026

    x86

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "mediaPlayback"
      Allows the app to make use of foreground services with the type "mediaPlayback"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.

    Download APK 40 MiB PGP Signature | Build Log

  • Version 1.11.76 (2007) - Added on Jul 19, 2026

    arm64-v8a

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "mediaPlayback"
      Allows the app to make use of foreground services with the type "mediaPlayback"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.

    Download APK 42 MiB PGP Signature | Build Log

  • Version 1.11.76 (2006) - Added on Jul 19, 2026

    armeabi-v7a

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "mediaPlayback"
      Allows the app to make use of foreground services with the type "mediaPlayback"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.

    Download APK 40 MiB PGP Signature | Build Log