Deskdrop

A local-first, zero-cloud desktop and mobile continuity engine for resumable file transfers, clipboard synchronisation, and hardware interaction across mixed operating systems.

Bridges macOS, Windows, Android, and Linux without relying on cloud infrastructure or external routing servers. All communication takes place point-to-point over local wireless networks (Wi-Fi, LAN, or standalone Wi-Fi Direct / Mobile Hotspot connections).

Built on an event-driven asynchronous Rust daemon designed for zero idle resource consumption.

Core capabilities

Resumable file transport

- Zero-copy memory pipelines with reference-counted buffer slices - Adaptive chunk batching based on live acknowledgment feedback - Geometric socket auto-tuning for maximum kernel buffer usage - Resumable transfers with fast entropy sampling (incompressible files bypass CPU compression)

Universal clipboard and timeline

- Real-time clipboard sync across trusted peer devices - Searchable local history with pinning and tagging - Configurable content filtering to exclude passwords, OTPs, and API keys - Deduplicated FFI string caching for high-frequency IPC updates

Extended modules

- Remote directory browsing over local sockets - Wireless continuity camera (phone camera as desktop webcam) - Notification and call handoff to desktop - Battery and power monitoring - OS-level sleep immunity during bulk transfers

Security

- End-to-end encryption — X25519 ECDH, HKDF-SHA256, ChaCha20-Poly1305 - Replay protection with strict 64-bit counter nonces - Memory zeroisation of session keys via zeroize crate - mDNS privacy enforcer — friendly names obfuscated until pairing - PIN-verified Trust On First Use (TOFU)

Platform support

- macOS — Production ready (Swift and SwiftUI, C-FFI, menu bar integration) - Android — Production ready (Kotlin and Jetpack Compose, JNI bridge) - Linux — Production ready (GTK3 and D-Bus) - Windows — Alpha / Experimental (WPF / .NET 8 Hybrid)

Requirements

- Android 8.0 (API 26) or newer - macOS 13.0 Ventura or later - Windows 10 / 11 (64-bit) - Linux (GTK3)

Disclaimer

Deskdrop is an independent, open-source project. Not affiliated with, endorsed by, or connected to Apple, Microsoft, Google, or any third-party services. All trademarks belong to their respective owners.

License

GNU Affero General Public License v3.0