This is Wikimedia's WikiWho API service. The API and the WikiWho algorithms were originally developed by GESIS; for more details, see the original homepage.

WikiWho was first conceived as a dissertation project at Karlsruhe Institute of Technology by Dr. Fabian Flöck. It was hosted, maintained and further developed at the Computational Social Sciences (CSS) department of GESIS – Leibniz Institute for the Social Sciences.