Matz is the nickname of Yukihiro Matsumoto, a Japanese computer programmer best known for creating the Ruby programming language. He designed Ruby to be simple and productive, emphasizing human-friendly syntax and ease of use. Released in 1995, Ruby has gained popularity for web development, particularly with the Ruby on Rails framework. Matz is also known for his contributions to the programming community, promoting open-source software and collaboration. He has received various awards for his work, including the Free Software Foundation Award for the Advancement of Free Software. Matz continues to be an influential figure in the tech world.