William Patterson's DOS port of the classic Intercal-to-C compiler coauthored by Eric S. Raymond.

Specification clarifications, implementation notes regarding the C-Intercal compiler, and literature references for those interested in background information on COME FROM and friends.

Idiom's catalog of free compilers and interpreters mentions Intercal.

This was author's first exercise in INTERCAL programming. It counts down from 500 all the way down to one. It's that simple!

Short introduction to Intercal, detailing Intercal's distinctivenesses in comparison to other languages.

Urban Nilsson's collection of INTERCAL programs.

Surprisingly readable chunk of C-Intercal-only source code written by Clemens Meier.

Original specification.

Unofficial Intercal language homepage, maintained by C-Intercal implementor Eric S. Raymond. Documentation, implementations, papers, and tools.

Using Intercal in Perl.

Intercal-to-Java compiler written by Karsten Sperling. Download, documentation, and links.

Featuring a ROT-13 routine and a short link list.

Features the original specification and an extensive sample source code collection. Links to several compilers and to other Intercal-related sites.

Compiled from the original specification and from the comments and clarifications by Howell and Raymond.

Article and site, non-fiction, and journalism indexes.

Intercal source code by Louis Howell.

Malcolm Ryan's proposed standard for Threaded Intercal, version 0.2.