eMule - eMule is a free peer-to-peer file sharing application for Microsoft Windows.
Cloudfogger - Easy and secure encryption for the cloud. Provides security for all cloud storage services like Dropbox, OneDrive and Google Drive.
Tixati - Tixati is a peer-to-peer file sharing program that uses the popular BitTorrent protocol.
Google Drive - Access and sync your files anywhere
Soulseek - Soulseek® is a unique ad-free, spyware free, and just plain free file sharing application.
BoxCryptor - Boxcryptor encrypts your sensitive files before uploading them to cloud storage services like Dropbox, Google Drive, Microsoft OneDrive, Box, and many others.