Hello, World Program
   Classic test program, written in ICON.
   http://www2.latech.edu/~acm/helloworld/icon.html

Icon
   Imperative, procedural, high-level, general purpose, many features for processing data structures, character strings, C/Pascal-like syntax, but far higher semantics. Has documents, books, implementations, libraries, Java-based Jcon.
   http://www.cs.arizona.edu/icon/

Icon Tutorials
   Information on many aspects of Icon programming
   http://infohost.nmt.edu/tcc/help/lang/icon/

Jcon
   A Java-Based Icon Implementation
   http://www.cs.arizona.edu/icon/jcon/index.htm

Reducing Field Table Size in the Icon Translator
   Technical report by Richard Hatch and Clinton L. Jeffery.
   http://www.cs.utsa.edu/documents/tr95_14.html

The Icon Handbook
   PDF copy of the Icon Programming Language Handbook.
   http://www.tools-of-computing.com/tc/CS/iconprog.pdf

Ulex
   A lexical analyzer generator for Unicon.
   http://unicon.sourceforge.net/utr/utr2/utr2a.html

Unicon
   A portable, high level network and graphics savy "modern dialect" descending from the Icon programming language with support for OpenGL, OOP features, POSIX support, and ODBC.
   http://unicon.sourceforge.net/