imapsync - Console-based utility for migrating IMAP mailboxes.
Symantec Data Loss Prevention - Fully protect your data with the comprehensive detection technologies and unified policies of Symantec's industry leading Data Loss Prevention (DLP).
Gmvault - Backup the emails in your Gmail account.
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
Cryoserver - Cryoserver is an all-in-one email archiving solution that empowers you to preserve your email in a tamper-evident archive, making you transform your data into a useful archive for everyday use.
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.