Encyclopedias

• MathWorld
• The On-Line Encyclopedia of Integer Sequences
• Wikipedia
• Quantiki (Quantum information wiki)

e-Print Archives

• arXiv.org (Physics, mathematics, computer science, etc.)
• eprint.iacr.org (Cryptology)

Search Engines and Indexes of Scientific Literature

• The Collection of Computer Science Bibliographies
• Google Scholar
• DBLP (Computer science)
• SpringerLink
• MathSciNet (Requires subscription)
• ISI Web of Science (Requires subscription)
• Zentralblatt MATH (Requires subscription)
• BIBSYS (Norwegian libraries)
• Technical Reports in Informatics (University of Bergen)

LaTeX

• The not so Short Introduction to LaTeX2ε
• Math mode tutorial
• CTAN (The Comprehensive TeX Archive Network)
• Beamer (Class for presentations)
• TeX Frequently Asked Questions
• KOMA-Script manual
• Memoir manual

Miscellaneous

• Tables of linear codes and quantum codes (Maintained by Markus Grassl)
• nauty (Program for graph isomorphism)
• MAGMA (Computational Algebra System)
• Graphviz (Graph Visualization Software)

People

• Claude Carlet
• Philippe Gaborit
• Markus Grassl
• T. Aaron Gulliver
• Joakim Grahl Knudsen
• Matthew G. Parker
• Constanza Riera