Clipboard sync
Copy text or images on one machine and paste on another. Sub-second delivery on a healthy LAN.
Features
File transfer
Send files with accept or decline. Chunked, encrypted transfers with progress in the app.
Encrypted locally
AES-256-GCM with a passphrase-derived key. Your secret never leaves your devices.
LAN only
mDNS discovery on your network. No cloud accounts, no relay servers, no upload queue.
Tray-first
Runs quietly in the system tray. Open the window when you need settings or file offers.
Open source
Go backend, React UI, Wails v3 shell. Inspect the code, build it yourself, ship it internally.
How it works
Install on each device
Download the release for macOS, Linux, or Windows and run Mercury on the same network.
Set the same passphrase
Open Settings and save a shared secret. Every machine must use identical words.
Copy and paste
When peers appear on Home, clipboard sync is live. Files can be offered from the clipboard path.
Platforms