Activity Workshop
- An introduction to nonograms and how to solve them, including puzzles to solve online.
- http://activityworkshop.net/puzzlesgames/nonograms/

Griddlers Deluxe
- Software to play black-and-white and color pictures, as well as an editor to create custom grids. Shareware. [Windows 95/98/ME/2000/XP]
- http://www.puzzlehome.com

Simplism Games: Nonosweeper
- Freeware game that combines Minesweeper and Nonograms. Contains best time lists, tournament, and game information. [Windows]
- http://www.nonosweeper.com

B&P Games: NonoGrid
- Shareware program includes hundreds of puzzles. [Windows]
- http://www.nonogrid.com

The Jcwd - Japanese Crossword
- Program for creating, and solving white-black and color Japanese crosswords (paint by numbers). Software comes with an archive of Japanese crosswords. [Windows 95/98/ME]
- http://www.catchysoft.com/jcwd.html

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/

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

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/