3D computer graphics software refers to programs used to create 3D computer-generated imagery. There are typically many stages in the "pipeline" that studios use to create 3D objects for film and games, and this article only covers some of the software used.
Note that most of the 3D packages have a very plugin-oriented architecture, and high-end plugins costing tens or hundreds of thousands of dollars are often used by studios. Larger studios usually create enormous amounts of proprietary software to run alongside these programs. But thankfully, there are always free/open-source software alternatives that can help produce highly commendable 3D animations like it did in the short film entitled “Elephants Dream”.