Some useful links:
The Homepage of Sage: www.sagemath.org
A site containing links for various computer tools for low-dimensional topology: CompuTop
The Knot Atlas: knotatlas.org
The Table of Knot invariants: KnotInfo
The GecoGedi Project Homepage: GecoGedi
An online version of Counter Examples in Tology: pi-Base
The homepage of Lukas Lewark, where one can find some computer programs for computing Khovanov-Rozansky homologies: Lukas Lewark's homepage'
The homepage of Marta Barigozzi: Marta Barigozzi's homepage'
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