IBM Burr Puzzles  
   Explore known burr puzzles and calculate new ones using the burr calculator.
   http://www.research.ibm.com/BurrPuzzles/

Interlocking Puzzles  
   Makes unique hand crafted mechanical puzzles from domestic or exotic hardwoods.
   http://www.interlockingpuzzles.com/

Trevor Wood's Puzzles  
   Handcrafted wooden mechanical puzzles. (UK)
   http://www.puzzles.force9.co.uk/index.htm

Pinnacle Puzzles  
   Traditional handmade wooden games and puzzles for the entire family. (UK)
   http://www.pinnaclepuzzle.freeuk.com/intro.htm

Mr. Puzzle  
   Offers comprehensive range of quality complex wooden burr puzzles and brainteasers.
   http://mrpuzzle.com.au

The Puzzle Palace  
   Offers comprehensive range of complex wooden puzzles & brainteasers including Gemani exclusive designs.
   http://www.puzzlepalace.co.uk

Poppa's Art and Toys  
   Offers selection of entanglement, burr, and other wooden puzzles.
   http://www.toys-n-art.com/

Don's Puzzle Collection  
   A collection of handmade wooden puzzles and brainteasers. Includes images of each both assembled and apart.
   http://www.angelfire.com/space/adelaar/puzzles

Toys-for-all  
   Information on the company's products and how they are created.
   http://www.geduldspieleshop.de

Cubic Dissection  
   Interlocking puzzle gallery. Handcrafted wooden puzzles for sale.
   http://www.cubicdissection.com

Knox Puzzles  
   Custom made wooden toys for children, puzzles and games.
   http://www.knoxpuzzles.com/

les jeux d'Anna  
   Offers artistic and educational wooden toys.
   http://www3.sympatico.ca/annau/

Making the Burr Puzzle  
   Instructions on how to make burr puzzles including what tools and materials to use.
   http://www.flowerfire.com/burrmaking/

Other Zone  
   Offers information about an enormous wooden Rubik's type puzzle.
   http://www.otherzone.com

Pentangle Puzzles  
   Designers, manufacturers and distributors of over 60 quality wooden puzzles made in England.
   http://www.pentangle-puzzles.co.uk

Puzzle Craft  
   Handmade wooden Pentominoe puzzles, Metacube puzzles and original interlocking polyhedral puzzles.
   http://www.puzzlecraft.com

Puzzled Pets  
   3D wooden puzzles made from 100% recycled materials. Unique - no two are exactly alike and all stay together until secret pin is removed.
   http://www.PuzzledPets.com

R & A Media  
   Offers wood constructed 3d puzzles like CalmPlex and PyrPlex as well as building schematics and kits.
   http://www.calmplex.com/

ROLI  
   Offers handmade wooden 3-D mazes, building-up games, packing problems and combination puzzles.
   http://www.rolionline.com

Tarata  
   Offers handmade balancing animals wooden game for adults and children.
   http://www.tarata.com/