Salad Room - Share text, links or files quickly between devices
Uppy.io - Next open source file uploader for web browsers
Envelop - Immersive virtual reality platform for the Windows desktop, use all your Windows apps in VR.
FilePizza - Open source application used to transfer file via WebRTC and WebTorrent.
ShareDrop - HTML5 clone of Apple's AirDrop - easy P2P file transfer powered by WebRTC
BlackHole File Transfer - Blockchain-based file transfer. Designed for everyday use.