Nonograms

Conceptis Puzzles - Creator and supplier of picture-forming logic puzzles. Contains online games and those for sale from Japan.
www.conceptispuzzles.com/

Griddlers Solver with Animator - Freeware application with auto-solver and ingenious animations. Includes article about solving by computers. [Windows]
jsimlo.sk/griddlers/

Japanese Puzzles - Online flash game with black and white puzzles.
www.sapphiregames.com/online/nonogram.php

Nonogram Solver - Information about Nonogram logic puzzles and how to solve them, plus examples of two on-line solvers, software, and links.
www.comp.lancs.ac.uk/computing/users/ss/nonogram/

Paint by Numbers - Offers two color puzzles available to print out or solve online.
www.blindchicken.com/~ali/games/puzzles.html

Solving Paint-by-Numbers Puzzles with Integer Programming - Article and instructions on solving puzzles.
www.oberlin.edu/math/faculty/bosch/pbn-page.html