Nonogram Puzzle by Gunn  
   Includes downloads, tasks, rules, FAQ, press, puzzle history and game updates. [Russian or English]
   http://www.puzzle.kiev.ua/

Griddlers.net  
   Offers member-created puzzles ranging in complexity from two to eight colors for online play or to print out. Free registration required.
   http://www.griddlers.net/

HTMLWORK: The Japanese Crossword Puzzle  
   Collection of Java-based puzzles that can be solved online.
   http://home.onego.ru/~sdolgov/online/jcp/start.htm

Japanolle  
   Play online or download puzzle-solving software for PC.
   http://www.yavsoft.com/japanolle/

Online Tsunami  
   Create, edit, and play Japanese Tsunami puzzles in black and white or color. Includes playable puzzles created by others, hints, and solutions.
   http://www.playtsunami.com/

Paint By Numbers  
   Offers two color puzzles ranging from 10x10 to 40x40. Free registration required to solve online or create puzzles.
   http://pbn.homelinux.com/pbn/index.html

PictureLogic  
   Offers shareware Palm and Windows programs to play nonograms. Also offers a selection of free puzzles for use with either program. FAQ, instructions, testimonials, and features.
   http://www.advant.com/users/Kwolcott/pictlogi.html

Japan Riddles  
   Contains game downloads with expansion packs and play instructions.
   http://www.japanriddles.com/

Activity Workshop  
   An introduction to nonograms and how to solve them, including puzzles to solve online.
   http://www.geocities.com/activityworkshop/puzzlesgames/nonograms/index.html