Of course, programming languages without names of any kind are not new. Like this one, they tend to be esoteric. There's the Turing Machine inspired Brainfuck,

Of course, programming languages without names of any kind are not new. Like this one, they tend to be esoteric. There's the Turing Machine inspired Brainfuck, with its 8 symbol alphabet <>+-[]., Some are based on Combinatory Logic, like Lazy-K and unlambda, and others on Lambda Calculus with de-Bruijn indices, like binary lambda calculus and λDNA. And several others, like this one, are stack based.