Tess for Mac

From Pedagoguery Software:

With Tess, you can quickly create attractive symmetric planar illustrations. While you draw, Tess will automatically maintain the symmetry group you have chosen; 24 rosette, all 7 frieze, and all 17 wallpaper groups are included. Tess can save illustrations using Tess' own cross-platform format and can export illustrations using GIF, JIF, PCX, SVG, EPS, and other formats. Print-outs from Tess are crisp since they are sent as vectors to your inkjet or laser printer and are processed at your printer's resolution.