INTERCAL is a compiler for the language of the same name, which is renowned for its perversity. It comes with a language manual and examples, including what is possibly the entire extant body of INTERCAL code.

INTERCAL, programming language parody, is the canonical esoteric programming language created by Don Woods and James M. Lyon, two Princeton University students, in 1972. It satirizes aspects of the FORTRAN and COBOL programming languages, as well as the proliferation of proposed language constructs and notations in the 1960s.