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Puzzle sites
| Conceptis Logic Puzzles - Conceptis supply Nonograms and other logic puzzles to publishers around the world. Their website contains a logic puzzle community and features various online puzzles - both Nonograms and other original variations on the concept. |
| Archimedes' Lab - Explore, learn and have fun with puzzles. |
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Potty Puzzles - Large catalogue of mechanical puzzles. |
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Games 4 Brains - Online games, puzzles and other brainteasers like Sokoban or Puzznic |
| Ken Duisenberg's Puzzle of the Week | |