System programming language created by Walter Bright at Digital Mars and later joined by Andrei Alexandrescu, offering a unique blend of efficiency and expressiveness inspired by C++ but standing distinct from it. It incorporates multiple programming paradigms and features an innovative type system, appealing to programmers looking for modernized C++ alternatives. D is influenced by languages such as Java, Python, and C#, and it has, in turn, influenced newer languages like Rust and Go.