KeibiDrop

KeibiDrop — Free Download. Secure direct file mounting

KeibiDrop connects two computers directly and presents a folder from one machine as a standard folder on the other. There is no upload step and no copy operation. File contents stream across the internet as applications read them, so opening one 5 MB file from a 500 GB directory tree transfers only 5 MB. The software works with Finder, Explorer, git, ffmpeg, Blender, Premiere, and any generic application. Both parties can write, and when two saves conflict, the newer file keeps the original name while the other version is preserved alongside it. Sessions use end-to-end post-quantum encryption with no accounts or email addresses required.

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Download KeibiDrop (Official links)
File size: 21.5 MB
The latest version of KeibiDrop is: 0.4.2
Operating system: Windows, Mac OS, Linux
Languages: English
Developer: KeibiSoft
Price: $0.00 USD (Open Source (MPL-2.0))
  • Unlimited transfers. Any file size, any number of files, and no bandwidth quota are supported. A 5 KB configuration file or a 500 GB database dump can be sent without restriction. Incomplete transfers resume automatically when the same peer reconnects, eliminating the need to restart large operations from the beginning.
  • Live editing and playback. A 4 GB video file plays immediately instead of requiring a full download first. Files can be edited directly from the mounted location, and changes save back to the peer device when the save command is issued in the application. This removes the download-edit-upload cycle entirely.
  • Post-quantum encryption. The key exchange combines ML-KEM-1024 with X25519 in a hybrid construction. Data encryption uses AES-256-GCM or ChaCha20-Poly1305. The relay server, when used, forwards only bytes it cannot decrypt, ensuring that intermediaries never access plaintext content.
  • Direct device-to-device connection. Files travel directly between the two machines without an upload-then-download intermediate stage. On a local network, the connection saturates gigabit ethernet speeds. This architecture minimizes latency and removes dependence on third-party storage.
  • Internet and LAN operation. On the same WiFi network, devices discover each other automatically through Bonjour. On different networks, the connection routes through an encrypted relay. Both modes maintain the same encryption guarantees and session persistence.
  • Cross-platform support. macOS, Windows, Linux, Android, and iOS are all supported. A desktop GUI serves regular interactive use, a CLI handles scripting and server environments, and an agent mode enables automation. Shared files persist across application restarts.
  • Remote triage for forensics. An evidence share can be mounted read-only, allowing extraction of only the specific artifact set needed while leaving the rest of the data untouched at its original location. This reduces unnecessary data movement during investigations.
  • Post-production handoff. Camera original files can be mounted directly, skipping the proxy transcode step and the relink process. Editors and colorists access source media without creating duplicate copies or waiting for full transfers.
  • Dataset mounting for GPU workstations. A workstation holding large datasets can be mounted from a GPU machine. No cloud bucket upload is required before the first training batch starts. Data streams directly from the source as the training script reads it.
  • Conflict resolution for simultaneous writes. When two users save to the same file at the same time and the writes genuinely cross, the newer version keeps the original filename. The other version is preserved beside it on both machines, so no data is silently overwritten or lost.
  • Android file mounting. Files stored on an Android device can be mounted and instantly opened on a desktop machine. This removes the need for USB transfers or cloud synchronization when working with mobile content.
  • Session persistence. Shared folder configurations remain active after the application restarts. Peers can reconnect without re-establishing mount parameters, and interrupted sessions resume with the same encryption context.

KeibiDrop was created in 2024 by a small development team focused on direct file access between devices. The program was written primarily in Rust, with platform-specific components in Swift for macOS and iOS, Kotlin for Android, and C++ for Windows filesystem drivers. The initial release targeted macOS and Linux, with Windows support added in early 2025. The developers prioritized removing the upload step from file sharing workflows, designing the system around streaming filesystem semantics rather than batch transfers. The post-quantum encryption stack was integrated from the first public version, using ML-KEM-1024 alongside X25519 to address future cryptographic threats.