International Laboratory of Logic, Linguistics and Formal Philosophy (HSE, Moscow)
Virtual Philosophical Center: page of Philosophy of Maths seminar in Moscow State University, Dept. of Philosophy
M-Phi: blog dedicated to mathematical philosophy
nLab: wiki-lab for collaborative work in Mathematics, Physics and Philosophy (especially from the n-point of view)
Homotopy Type Theory and Univalent Foundations
New York City Category Theory Seminar
SPHERE : history and philosophy of science lab in University Paris-Diderot / CNRS