- American Mathematical Society (AMS)
- Mathematical Association of America (MAA)
- Society for Industrial and Applied Mathematics (SIAM)
- Electronic Journals
- Full Text
- Table of Contents
- Discrete Mathematics
- Journal of Algebraic Combinatorics. (Check out the group photo of the editors)
- Journal of Combinatorial Theory, Ser. B.

- Miscellaneous
- Math FAQ (Frequently Asked Questions)
- Wolfram Research (publishers of Mathematica).
- The Geometry Center
- MPEG Movie (>300K) of a sphere turning itself inside out.

- AMS: Math Web Servers
- List of Summer REU's (Research Opportunities for Undergraduates).
- Chess: Kasparov vs. Deep Blue
- Math Forum at Swarthmore has resources on geometry, teaching, and other topics
- The University of Pennsylvania Math Department has a great collection of links.
- The Mathematics On-Line Bookshelf (lists and reviews of current publications).