Design Theory

La Jolla Covering Repository - A database of good covering designs constructed by Dan Gordon.
http://www.ccrwest.org/cover.html

Design Theory Lecture notes on the Web - Links compiled by Peter Cameron.
http://www.maths.qmul.ac.uk/~pjc/design/notes.html

Some Constant Weight Codes - As orbits of AG(2,q), PSL(2,2^f) and PGammaL(2,2^f) by Yves Edel.
http://www.mathi.uni-heidelberg.de/~yves/Matritzen/CWCodes/CWCode.html

Orthogonal Arrays - A library of over 200 orthogonal arrays maintained by N. J. A. Sloane.
http://www.research.att.com/~njas/oadir/

Library of SBIBD - Compiled by Jennifer Seberry.
http://www.uow.edu.au/~jennie/SBIBD.html

SOMA Update - Leonard Soicher reports on new SOMAs, which are generalisations of mutually orthogonal Latin squares.
http://www.maths.qmw.ac.uk/~leonard/soma

Handbook of Combinatorial Designs - Home page for The CRC Handbook of Combinatorial Designs.
http://www.emba.uvm.edu/~dinitz/hcd.html

Mathworld - Golomb Ruler - Description and theory, with references to additional reading.
http://mathworld.wolfram.com/GolombRuler.html

The Search for a Finite Projective Plane of Order 10 - By C.W.H. Lam.
http://www.cecm.sfu.ca/organics/papers/lam/paper/html/paper.html

Ted Spence's Home Page - Classification of Hadamard matrices and designs.
http://www.maths.gla.ac.uk/~es/

Library of D-optimal Designs - Compiled by Jennifer Seberry.
http://www.uow.edu.au/~jennie/D-optimal.html

Orthogonal Arrays - Lists of orthogonal arrays, difference schemes and experimental design tools maintained by Warren F. Kuhfeld.
http://support.sas.com/techsup/technote/ts723.html

Caps in Finite Geometries - Tables and examples in PG(k-1,q) by Yves Edel.
http://www.mathi.uni-heidelberg.de/~yves/Matritzen/CAPs/CAPMatIndex.html

D.H. Rees Home Page - Information on Nested and Orthogonal BIBDs and related topics.
http://www.davidhywel.freeserve.co.uk

Mathematical Association of America - Math Games: Rulers, Arrays, and Gracefulness - Ed Pegg Jr. writes about the history (and future) of Golomb rulers and related concepts.
http://www.maa.org/editorial/mathgames/mathgames_11_15_04.html

Bill Cherowitzo's Hyperoval Page - Hyperovals in Desarguesian Planes and related structures in arbitrary projective planes.
http://www-math.cudenver.edu/~wcherowi/research/hyperoval/hypero.html

Small Association Schemes - Tables of homogeneous coherent configurations by A. Hanaki and I. Miyamoto.
http://kissme.shinshu-u.ac.jp/as/

Design Theory Resource Server - A research project founded by the UK Engineering and Physical Sciences Research Council.
http://www.designtheory.org/

Golomb Rulers - The Search For 20, 21 and 22! - The search for optimal Golomb Rulers with 20, 21 and 22 marks.
http://members.aol.com/golomb20/

Blocks and Design Applet - Fractional factorial design generator by Marko Boon.
http://www.win.tue.nl/statlab/designApplet.html

Golomb Rulers - Table of lengths of shortest known Golomb rulers, counts of optimal and near-optimal rulers, and some Fortran programs for dealing with Golomb rulers.
http://researchweb.watson.ibm.com/people/s/shearer/grule.html

The Hadamard Maximal Determinant Problem - List of known {-1,1}-matrices with largest determinant and D-optimal designs.
http://www.indiana.edu/~maxdet

Design Resources - Links to resources for design theory maintained by Peter Cameron.
http://www.maths.qmw.ac.uk/~pjc/design/resources.html

Distributed.net: Project OGR - Describes the computerized effort to prove that the known shortest Golomb rulers (up to 25 marks) are really the shortest, or else find the actual shortest ones.
http://www.distributed.net/ogr/

Modular and Regular Golomb Rulers - Detailed, theoretical tutorial with references.
http://cgm.cs.mcgill.ca/~athens/cs507/Projects/2003/JustinColannino/

Orthogonal Arrays and Covering Arrays - Construction of orthogonal arrays and covering arrays using permutation groups by George Sherwood.
http://home.att.net/~gsherwood/cover.htm

StatLib - Designs Archive - With programs and algorithms for creating designs for statistical experiments.
http://lib.stat.cmu.edu/designs/

Hadamard Matrices - A library of Hadamard matrices maintained by N. J. A. Sloane.
http://www.research.att.com/~njas/hadamard/