What are some alternatives?
When comparing Digicert and Microsoft BitLocker, you can also consider the following products
Let's Encrypt - Let’s Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (ISRG).
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).
VeriSign - VeriSign Authentication Services provides solutions that allow companies & consumers to engage...
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
GlobalSign - GlobalSign offers a range of SSL Certificates with the strongest 2048 bit encryption and value add features to ensure your website is protected.
GravityZone - Antivirus and Application Security