Processing is an open-source programming language and development environment that makes it easy for people to create interactive and visual projects. It is intended to be a beginner-friendly language, with simple syntax and a straightforward user interface. Processing's main focus is on creative coding and the development of interactive art installations.

The language was initially developed by a group of computer scientists and artists in 2001 with the goal of providing a simple way for artists and designers to create interactive installations and graphics on the fly. Since then, it has grown into a powerful tool for software developers who want to create visual and interactive programs.

One of the key features of Processing is its ability to display graphics in real-time. This means that a programmer can build a simple animation or interactive system and see the results immediately with feedback directly on their computer screen. Processing also has an extensive library of pre-built functions, such as drawing shapes, colors, and images, making it easy for beginners to get started.

Processing has become very popular, and many people use it to create various digital projects, including data visualizations, interactive installations, and live performances. Overall, Processing is an excellent language for anyone interested in exploring the world of programming, computer graphics, and creative coding.