crocson

crocson

Easily and securely send things from one computer to another

Konstantin Abakumov File Transfer

Screenshots

Screenshot of crocson Screenshot of crocson Screenshot of crocson

Description

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

Version Date Size Requires Android Download
1.11.76 current
32331303e3e79ea7…
2026-07-19 44 MB API 23
1.11.76
05b274e558ee82da…
2026-07-19 41 MB API 23
1.11.76
2df4df8f5c1cf133…
2026-07-19 42 MB API 23
1.11.76
d3f999417109fde9…
2026-07-19 41 MB API 23

Permissions

What the app asks the system for. Android only grants sensitive access after you confirm it.

  • Internet accessSend and receive data over the internet.
  • CameraTake photos and videos.
  • Write storageCreate and change files on the device storage.
  • Read storageRead files on the device storage.
  • Foreground serviceKeep running in the background, visible in the status bar.
  • FOREGROUND_SERVICE_MEDIA_PLAYBACK
  • CHANGE_WIFI_MULTICAST_STATE

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