What are some alternatives?
When comparing Let's Encrypt and Microsoft BitLocker, you can also consider the following products
OpenSSL - OpenSSL is a free and open source software cryptography library that implements both the Secure Sockets Layer (SSL) and the Transport Layer Security (TLS) protocols, which are primarily used to provide secure communications between web browsers and …
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).
FileVault - FileVault is a method of using encryption with volumes on Mac computers.
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
VeraCrypt - When you need to know that your information is secure, VeraCrypt offers an added layer of protection. Their encrypting process keeps your files and data safe from prying eyes.
GravityZone - Antivirus and Application Security