If you’ve seen an unbelievable interactive projection or a mind-blowing piece of generative video art, odds are you’ve come across openFrameworks, an accessible programming platform that has helped create projects like Arturo Castroand Kyle McDonald’s Faces, a real-time face-substitution project, the EyeWriter graffiti headset from F.A.T. Labs, and Chris O’Shea’s playful, Monty Python-inspired Hand from Above, among many other works of technology-based art. What makes openFrameworks and similar coding tools like Processing so powerful in an artistic context is that they are open source, free for any artist to use and hack to their own ends, and are made by artists, for artists.