Hello, I am using SumatraPDF at school (Windows). Lightweight, opens where it was closed last time (very convenient when you've got presentations up to 100 slides or more that takes several weeks to be discussed). Self actualizes when the ConTeXt source is compiled. At home (OpenBSD), mupdf and zathura. Rather for ratpoisons or Vim fans (keyboard-driven). Regards, Damien Thiriet