It is a phrase that Richard Stallman created, and well known in free software communities- https://www.wired.com/2006/09/free-as-in-beer/ https://www.wired.com/

It is a phrase that Richard Stallman created, and well known in free software communities- https://www.wired.com/2006/09/free-as-in-beer/ https://www.wired.com/2006/09/free-as-in-beer/, https://www.gnu.org/philosophy/free-sw.html https://www.gnu.org/philosophy/free-sw.html