| Brendan Owen has a site devoted to polyforms with particular emphasis on some of the more unusual and newer forms. |
| Gemani Games sell sets of solid pentominoes |
| Henri Picciotto's Geometric Puzzles in the Classroom gives information on various polyforms specifically designed for use with students. |
| Ishino Keiichiro's site |
| Juergen Koeller's site contains information of various polyforms. (German and English) |
| Kadon Enterprises sell sets of polyominoes, polyiamonds and polycubes |
| Kemurin's Plapuzzle Site (in Japanese and English) |
| Kevin Gon's Polyominoes |
| Leonid Mochalov has a puzzle site which includes some information on polyominoes. Much of the site is in Russian. |
| Livecube.com has, amongst many others, pentacube puzzles for online play. |
| Livio Zucca has lots of interesting data especially his own inventions - Sexehexes, Sexominoes, Xominoes and Zucca's puzzle. |
| Ed Pegg Jr.'s Mathpuzzle.com has links to various data |
| Miroslav Vicher's Puzzles Pages has information on most polyforms |
| Martin Watson's Puzzles Homepage contains some polyform information |
| William Waite's Nemmelgeb Murr Import Shop has information on various polyforms |
| Peter Esser's site has a large amount of information on various polyforms. |
| Polyform Curiosities |
| Jan Kok's Polyominoes: Theme and Variations has data on a number of polyforms. |
| Roel Huisman has a site covering a number of polyforms particularly the domsliced forms - his own inventions. |
| Yoshiya Wolf Shindo's puzzle site contains problems on box packing |
| NeuroTransmitter |
| http://www.monmouth.com/~colonel/poly.html |
| Polyiamond Exclusion |
| Riding Polyominoes |
| http://www.monunivers.com/pento/ (in French) |
| Logelium (German and English) |
| Eric Harshbarger has information on pentominoes which has some interesting problems. |