rDrop is described as 'Send files from one device to another by scanning a QR code. No compression, No size limit, Secure and Fast! Like AirDrop, but works on any device, OS or platform!' and is a large file transfer service in the file sharing category. There are more than 50 alternatives to rDrop, not only websites but also apps for a variety of platforms, including Android, Windows, Linux and Mac apps. The best rDrop alternative is LocalSend, which is both free and Open Source. Other great sites and apps similar to rDrop are Syncthing, Send, PairDrop and Wormhole.
WIFIDrop is auto connect without scan QR