This is a non-exhaustive list of sites by other authors, which link to this site.

Zak Fenton
Awesome Math
Matematika kaip kultūros reiškinys (=Mathematics as a cultural phenomenon)
Set Theory and Philosophy facebook group administered by Işık Barış Fidaner
Ali Sadegh Daghighi : The Kingdom of Logic
Mathematical Logic around the world
General Algebra
Gérard Villemin : Théorie des ensembles
Dimensional Analysis
Nicolas Levy : Physique