ShareDrop - HTML5 clone of Apple's AirDrop - easy P2P file transfer powered by WebRTC
Dropbox - Online Sync and File Sharing
SHAREit - SHAREit allows you to transfer files and data from your phone to another device without having to rely on WiFi or a data plan.
ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.
Warpinator - Share files across the LAN. Contribute to linuxmint/warpinator development by creating an account on GitHub.
Google Drive - Access and sync your files anywhere