VeraCrypt - VeraCrypt is a free open source disk encryption software for Windows, Mac OSX and Linux.
Nextpoint - Nextpoint offers solutions for eDiscovery, evidence exchange, deposition and transcript management.
Axcrypt - AxCrypt - Password Protect Files With Strong Encryption. AxCrypt is the leading open source file encryption software for Windows.
Everlaw - Everlaw is an eDiscovery software for litigation, document review, and analysis.
Windows BitLocker - This topic provides a high-level overview of BitLocker, including a list of system requirements, practical applications, and deprecated features.
Exterro - Exterro offer eDiscovery and legal software solutions.