- Bill Cherowitzo's Hyperoval Page - Hyperovals in Desarguesian Planes and related structures in arbitrary projective planes.
- Blocks and Design Applet - Fractional factorial design generator by Marko Boon.
- Caps in Finite Geometries - Tables and examples in PG(k-1,q) by Yves Edel.
- D.H. Rees Home Page - Information on Nested and Orthogonal BIBDs and related topics.
- Design Resources - Links to resources for design theory maintained by Peter Cameron.
- Design Theory Lecture notes on the Web - Links compiled by Peter Cameron.
- Design Theory Resource Server - A research project founded by the UK Engineering and Physical Sciences Research Council.
- 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.
- 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.
- Golomb Rulers - The Search For 20, 21 and 22! - The search for optimal Golomb Rulers with 20, 21 and 22 marks.
- Hadamard Matrices - A library of Hadamard matrices maintained by N. J. A. Sloane.
- Handbook of Combinatorial Designs - Home page for The CRC Handbook of Combinatorial Designs.
- La Jolla Covering Repository - A database of good covering designs constructed by Dan Gordon.
- Library of D-optimal Designs - Compiled by Jennifer Seberry.
- Library of SBIBD - Compiled by Jennifer Seberry.
- 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.
- Mathworld - Golomb Ruler - Description and theory, with references to additional reading.
- Modular and Regular Golomb Rulers - Detailed, theoretical tutorial with references.
- Orthogonal Arrays - A library of over 200 orthogonal arrays maintained by N. J. A. Sloane.
- Orthogonal Arrays - Lists of orthogonal arrays, difference schemes and experimental design tools maintained by Warren F. Kuhfeld.
- Orthogonal Arrays and Covering Arrays - Construction of orthogonal arrays and covering arrays using permutation groups by George Sherwood.
- Small Association Schemes - Tables of homogeneous coherent configurations by A. Hanaki and I. Miyamoto.
- SOMA Update - Leonard Soicher reports on new SOMAs, which are generalisations of mutually orthogonal Latin squares.
- Some Constant Weight Codes - As orbits of AG(2,q), PSL(2,2^f) and PGammaL(2,2^f) by Yves Edel.
- StatLib - Designs Archive - With programs and algorithms for creating designs for statistical experiments.
- Ted Spence's Home Page - Classification of Hadamard matrices and designs.
- The Hadamard Maximal Determinant Problem - List of known {-1,1}-matrices with largest determinant and D-optimal designs.
- The Search for a Finite Projective Plane of Order 10 - By C.W.H. Lam.
