Any non whitespace characters are ignored; only spaces, tabs and newlines are considered syntax.

Yet another list of obfuscated programming languages.

Minimalistic functional language based on the Lambda calculus but lacking the Lambda operator. Tutorial, reference, GPLed interpreters available.

A language with beautiful source code that resembled Shakespeare plays.

A queue based programming language. It's not designed to be useful, just fun.

Introduction to Malbolge programming. Also propose modificatins of Malbolge for making programming in it more worse.

Home of esoteric programming languages such as Java2K, Smith#, Sorted!, [], Esogotschi and the Great Python Language Zoo. Also heavy on the code obfuscation front.

A programming language in which program flow can go sideways. Closely related to Befunge. Tutorial, reference, sample source code, Public Domain implementation available.

Specifically designed to be extremely difficult to program in.

The esoteric programming language. Documentation, interpreter, and example programs.