SysTools Gmail Backup - Backup Gmail Emails, Contacts, Calendar, and Google Drive Storage File by SysTools Gmail Backup Solution
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
Gmvault - Backup the emails in your Gmail account.
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.