GNU is an operating system composed entirely of free software. Its design is Unix-like. GNU offers numerous systems and software programs. GNU stands for Gnu's Not Unix, and was developed, along with a GNU Manifesto, by Richard Stallman, a former MIT professor.
GnuPG stands for Gnu Privacy Guard. It is GNU's tool for secure communication and data storage. It can be used to encrypt data and create digital signatures. GnuPG is free. The website provides detailed information about the program, downloading it, support, installation, new developments, and more.
VideoLAN, which began as a student project at the Ecole Centrale Paris, is a software project, which produces free software for video, released under the GNU General Public License. Their main product is the cross-platform VLC media player. On the website, users can find out more about the project, how to contribute to it, news, and events where it can be seen.
The following digital image illustrates the word gnu.