Mathematical Atlas: General Topology - From Dave Rusin's "Known Math" collection.

Fixed Point Theory on the Web - Fixed Point Theory on the Web

xxx Math Front: GN General Topology - Preprints in general topology.

Oxford Analytic Topology Research Group - Research interests: topology of metric spaces, generalised metric spaces, continua, function spaces, hyperspaces, topological algebra, set theoretic methods in topology, and applications of topology to computer science and the theory of differential equations.

Textbook in Problems on Elementary Topology - The core of the book is the material included usually into the Topology part of the two year geometry course in the Mathematical Department of St. Petersburg University. This lecture course was composed by Vladimir Abramovich Rokhlin in the sixties and has almost not changed since then.

Open Questions in Topology - By Marianne Morillon.

The Stone-Cech Compactification - Notes by Mike Stannett.