beemr

Send files and messages straight to another device: no servers, no
accounts, no setup. beemr connects directly when it can, punches through
home and mobile NATs when it can't, and falls back to relaying through
other beemr devices. Everything is end-to-end encrypted.

beemr share photos/ # prints a command for the other device
beemr msg sara "hi" # messages arrive in beemr inbox