Science:

• Robert Campbell's Homepage
• NCBI: National Center for Biotechnology Information
• Pedro's BioMolecular Research Tools
• The RCSB Protein Data Bank

Programs:

• CNS
• MOLMOL
• MolScript
• NMRView
• Perl
• RasMol
• X-PLOR

Search Engines:

• AltaVista
• Google
• Metacrawler