For computing Befunge uses a self-modifying stack. Vatical Vatical was designed to be the apocalypse of programming languages. K is a logical progression to SUNs Java language. It uses a virtual machine, its portable, and it is easy to learn. K seems to be product of an extremely disturbed mind.
All instructions are single-characters and it uses a stack.
It looks like Morse code and it s hard to write programs in, and impractical to compile. The operation done depends partly on an eight-state variable. The only accessible data store is limited to 256 bytes. Bullfrog Bullfrog has no conditionals whatsoever, control flow must be done with jumps. Currently the Var aq interpreter is available with Klingon and English keywords.