I am looking for a Windows program that can:

  • display 4 PDFs or more simultaneously in the same window (more than 4 would be even better) like in the image below (but ideally with filenames visible somewhere).
  • update the PDF whenever the PDF is changed by another program (e.g. like Sumatra PDF does, but I don't want to tile a bunch of Sumatra windows myself).

If possible, free and works with Windows 7 SP1 x64 Ultimate.

enter image description here

  • I use SumatraPDF for a similar layout. I tile the windows using keyboard shortcuts from the AutoHotKey script in this answer. e.g. Win + Num9 for upper-right corner
    – Tymric
    Aug 12, 2015 at 10:26


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