» Ibiblio    PDP-11 freeware archives.    http://www.ibiblio.org/pub/academic/computer-science/history/pdp-11/

» Mentec    PDP-11 operating systems plus layered products and services.    http://www.mentec.com/

» PDP11 RT11 Games    Compiled games list for the DEC PDP11 computers running RT11.    http://www.geocities.com/CapeCanaveral/5517/pdp11.htm

» Pdp11.org    Dedicated to preserving the history and legacy of the PDP-11 series of 16-bit minicomputers.    http://www.pdp11.org/

» RSTS-11 Library Entries    Compiled by Tim Shoppa.    http://pdp-11.trailing-edge.com/rsts11/

» The PDP-11 FAQ    Information for those who are enthusiasts, curious, or downright confused as to what the -11 was and is, and how it related and still relates to its world.    http://www.village.org/pdp-11/faq.html

» The PDP-11 Unix Preservation Society    Devoted to the preservation of all information related to the versions of Unix that ran on Digital PDPs.    http://minnie.tuhs.org/PUPS/index.html

» Trailing-edge.com    PDP-11 freeware CDs.    http://www.trailing-edge.com/www/freeware.html

» YAPP    "Yet another PDP-11 Page", from John Holden.    http://www.psych.usyd.edu.au/pdp-11/

» pdp11.co.uk    Information, pictures and profiles on the PDP-11 family of computers and peripherals.    http://www.pdp11.co.uk/