Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
VeraCrypt - VeraCrypt is a free open source disk encryption software for Windows, Mac OSX and Linux.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Axcrypt - AxCrypt - Password Protect Files With Strong Encryption. AxCrypt is the leading open source file encryption software for Windows.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Windows BitLocker - This topic provides a high-level overview of BitLocker, including a list of system requirements, practical applications, and deprecated features.