This is one of the best all around sites that I have found. It is titled “The MacTutor History of Mathematics Archive.”
http://www-history.mcs.st-and.ac.uk/~history
This is an award-winning site that links to all sorts of mathematics information.
https://mathshistory.st-andrews.ac.uk/HistTopics/History_overview
Topology was presented for the first time by Jules-Henri Poincare:
https://mathshistory.st-andrews.ac.uk/Biographies/Poincare.html
The first serious study of topology was conducted by L.E.J. Brouwer:
https://mathshistory.st-andrews.ac.uk/Biographies/Brouwer.html
The set theory of Cantor provided a basis for topology:
https://mathshistory.st-andrews.ac.uk/Biographies/Cantor.html
Felix Hausdorf was also important in the development of topology:
https://mathshistory.st-andrews.ac.uk/Biographies/Hausdorff.html
Fractal geometry was first presented by Benoit Mandelbrot:
https://mathshistory.st-andrews.ac.uk/Biographies/Mandelbrot.html