Topology

Algebraic Topology Discussion List - The primary functions of this list are: providing abstracts of papers posted to the Hopf archive, providing information about topology conferences, and serving as a forum for topics related to algebraic topology. The site also serves as an archive of links to websites related to algebraic topology.
www.lehigh.edu/~dmd1/algtop.html

British Topology Home Page - A source of pointers to Topology-related sites, including archives and conference announcements.
www.maths.gla.ac.uk/~ajb/btop.html

The Cantor Set - Article in the Platonic Realms, describing the Cantor discontinuum, a favorite example of topology. Includes examples and illustrations.
www.mathacademy.com/pr/prime/articles/cantset/

Differentiable manifolds - Lecture notes by Mariusz Wodzicki in postscript or pdf.
math.berkeley.edu/~wodzicki/214/

Differential Topology - Course notes by Matthew G. Brin in PostScript including "Introduction to Differential Topology", "Introduction to Seifert fibered 3-manifolds", "Groups acting on 1-dimensional spaces", and "Presentations, conjugacy, roots and centralizers in groups of piecewise linear homeomorphisms of the real line".
www.math.binghamton.edu/matt/

Links to Low-dimensional Topology - Topics: General, Conferences, Pages of Links, Knot Theory, 3-manifolds, Journals.
www.math.unl.edu/~mbrittenham2/ldt/ldt.html

MAA Basic Library List in Topology - MAA recommended books in General, Geometric, Algebraic and Differential Topology.
www.maa.org/BLL/topology.htm

Mazes and Mathematics - History and mathematical analysis of labyrinths.
www.math.sunysb.edu/~tony/mazes/

Planar Machines - an Invitation to Topology. - Java applets exploring configuration spaces.
www.math.toronto.edu/~drorbn/People/Eldar/thesis/index.html

Topics in Mathematics - Topology - In the Mathematics Archives at University of Tennessee, Knoxville.
archives.math.utk.edu/topics/topology.html

Topological Methods in Group Theory - Table of contents only, but draft chapters can be downloaded by arrangement.
math.binghamton.edu/ross/contents.html

Topology - Descriptions and illustrations of several topological and differential geometry related notions.
www.chez.com/alcochet/toposi.htm

Topology Atlas - Preprints, abstracts, calendar, links, other resources.
at.yorku.ca/topology/

Topology Course Lecture Notes - By Aisling McCluskey and Brian McMaster. HTML with symbol fonts, DVI and PostScript.
at.yorku.ca/i/a/a/b/23.htm

Topology Glossary - Definitions of over 100 terms in topology.
www.ornl.gov/sci/ortep/topology/defs.txt

TTT on WWW - The Transpennine Topology Triangle is a topology seminar partially supported by the London Mathematical Society with vertices at Leicester, Manchester and Sheffield.
www.greenlees.staff.shef.ac.uk/ttt/ttt.html

What is Topology? - An introductory essay by Neil Strickland, University of Sheffield.
neil-strickland.staff.shef.ac.uk/Wurble.html