Jcon 
A Java-Based Icon Implementation
http://www.cs.arizona.edu/icon/jcon/index.htmIcon
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/
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
Hello, World Program
Classic test program, written in ICON.
http://www2.latech.edu/~acm/helloworld/icon.html
The Icon Handbook
PDF copy of the Icon Programming Language Handbook.
http://www.tools-of-computing.com/tc/CS/iconprog.pdf
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/
Ulex
A lexical analyzer generator for Unicon.
http://unicon.sourceforge.net/utr/utr2/utr2a.html
Icon Tutorials
Information on many aspects of Icon programming
http://infohost.nmt.edu/tcc/help/lang/icon/
