Adobe Illustrator plug-in that automates creation of surface designs and ornaments based on seventeen wallpaper groups. On-line purchase.

A collection of links.

Compiled by Suzanne Alejandre for the Math Forum.

An introduction to tessellations explaining the basic underlying mathematics, and with many examples from real life.

A summary of the history behind the Penrose tiling in the math department at Miami university.

Graphics and references.

Andrew Crompton's tiling and tessellation images.

Escher-like tessellations.

Explanations and graphics.

Examples and source code.