Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
imapsync - Console-based utility for migrating IMAP mailboxes.
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
OfflineIMAP - OfflineImap synchronizes email between an IMAP server and a MailDir or between two IMAP servers.