ShareFile - Secure file sharing and sync
Axcrypt - AxCrypt - Password Protect Files With Strong Encryption. AxCrypt is the leading open source file encryption software for Windows.
Google Drive - Access and sync your files anywhere
iGPMail - iPGMail: OpenPGP Email security for iPhone and iPad
Dropbox - Online Sync and File Sharing
AES Crypt - AES Crypt is an advanced file encryption utility that integrates with the Windows shell or runs from the Linux command prompt to provide a simple, yet powerful, tool for encrypting files using the Advanced Encryption Standard (AES).