Bashupload - Upload files from command line to share between servers
BoxCryptor - Boxcryptor encrypts your sensitive files before uploading them to cloud storage services like Dropbox, Google Drive, Microsoft OneDrive, Box, and many others.
FilePizza - Open source application used to transfer file via WebRTC and WebTorrent.
Mega - Secure File Storage and collaboration
BlackHole File Transfer - Blockchain-based file transfer. Designed for everyday use.
Google Drive - Access and sync your files anywhere