Beam-It sends files, photos, messages and links straight from one device to another in the browser. Pair two devices once with a QR code or a 6-letter code, then drop files in. Works between iPhone, Android, Mac, Windows, Linux and Chromebook. Nothing to install, no account, no size limit, and files are never uploaded to a server. Also: voice and video calls, screen sharing, one-time links for people without Beam-It, and an app lock. Free.