ClipSync
One clipboard across your Macs, Windows PCs and Android phones. Clips are encrypted on the device that copies them; this server only relays ciphertext.
Adding a device
Open ClipSync on a device that is already paired and choose Add a device. It shows a pairing code, a QR code, and an install command with the code already filled in.
Android
Allow installs from your browser when Android asks. Open ClipSync, then scan the QR code from Add a device on a paired device.
Mac
In Terminal:
curl -fsSL https://clip.46-250-241-165.sslip.io/install.sh | sh
Installs to ~/Applications and starts in the menu bar. Add the pairing code at the end (| sh -s -- XXXX-XXXX-XXXX) to pair in the same step. Zip download.