Send files to any device — fast, private, cross-platform.
Like AirDrop, but for iPhone, Android, Mac, Windows & Linux. Direct device-to-device over your own Wi-Fi, end-to-end encrypted, no account required.
Website · Download · Web Transfer · Blog
BIShare moves files the shortest way possible: directly between your devices. On the same network, devices discover each other automatically and transfer at router speed — originals only, nothing recompressed, photos and videos arrive bit-for-bit. Far apart? Encrypted transfer links (10 GB free) and group rooms cover the distance, with files encrypted before they ever leave your device.
- 🚀 Local-first — device-to-device over Wi-Fi, 40–50 MB/s on ordinary hardware
- 🔒 End-to-end encrypted — Curve25519 + AES-256-GCM, verified chunk by chunk
- 📱 Five platforms — native apps for iOS, Android, Windows, macOS, and Linux, plus any browser
- 🧾 No account, no ads — open the app and send
- 🔁 Resumable — transfers survive network blips instead of restarting from zero
| Repo | What it is |
|---|---|
| bishare-flutter | The BIShare app — one Flutter codebase for all five platforms, transport engine in Rust |
| bishare-protocol | The wire protocol — Rust crate implementing discovery, framing, and encryption |
| bishare-relay | Encrypted relay powering remote transfer links — stores only ciphertext it cannot read |
| bishare-web | bishare.app — website, browser-based transfer, and the engineering blog |
Questions, feedback, or a bug to report? Open an issue on the relevant repo, or reach us at support@billiongroup.net.