Applied Crystallography Online
Covers a wide range of crystallographic topics from the viewpoints of both techniques and theory.
journals.iucr.org/j/journalhomepage.html
Crystallography Online
Guide to news, organizations, university departments, projects, and journals.
www.iucr.org/cww-top/crystal.index.html
Eric's Quasicrystals Page
With pictures, software, and wallpaper.
www.physics.emory.edu/~weeks/pics/icon.html
New Paradigm for the Structure of Quasicrystals
Paper focusing on the case of decagonal quasicrystals whose quasiperiodic layers have the same symmetry as two-dimensional Penrose tilings.
wwwphy.princeton.edu/~steinh/quasi
QuasiTiler 3.0
Draws Penrose tilings and their generalizations.
www.geom.uiuc.edu/apps/quasitiler
Reciprocal Net
Free and public distributed database of molecular structures analyzed by crystallography labs across the world.
www.reciprocalnet.org
Steffen Weber's Introduction to Quasicrystals
Designed to educate the interested reader on some basic concepts in this relatively new branch of Crystallography.
www.jcrystal.com/steffenweber/qc.html