Nonograms

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

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

Japanese Puzzles
Online flash game with black and white puzzles.
http://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.
http://www.comp.lancs.ac.uk/~ss/nonogram/

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

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