tosstome
tosstome sends files and text between your devices straight from the browser. Open toss2.me on both devices: on the same Wi-Fi they find each other, on different networks one creates a 6-digit code and the other enters it. The receiver accepts before anything moves. Files go device to device over WebRTC when the networks allow it; when they do not, a relay forwards the bytes as they arrive and keeps nothing. There is no app to install and no account. For a computer that should always be ready to receive, the open source command line tool keeps an inbox with a fixed link and QR code your phone can send to from any network. The server is open source (AGPL-3.0) and runs on Cloudflare Workers or Docker.
