The project conceived around 1988. At first it was intended to be a companion to a chemical reactor design course. Real development only started by John W. Eaton in 1992. The first alpha release dates back to January 4, 1993 and on February 17, 1994 version 1.0 was released.
The name has nothing to do with music. It was the name of a former professor of one of the authors of Octave who was known for his ability to quickly come up with good approximations to numerical problems.
Because Octave is made available under the GNU General Public License, it can be freely copied and used. The program runs under most Unix and Unix-like operating systems, as well Microsoft Windows.