Twin directories of pex:

[DIR]  ftp://ftp.x.org/pub/unsupported/lib/PHIGS/pex/
[DIR]  ftp://ftp.x.org/contrib/pex/
[DIR]  ftp://ftp.mcs.vuw.ac.nz/_mnt/pub/packages/X/R5/mit/extensions/lib/PEX/pex/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/X11/unsupported/lib/PHIGS/pex/
[DIR]  ftp://ftp.ipa.fhg.de/pub/X/pex/
pkg://XFree86-2.1-src_include.tar.gz:53074/mit/extensions/lib/PEX/  downloads[DIR]3  XFree86-2.1-src_include.tar.gz/mit/extensions/lib/PEX/pex/
[DIR]  ftp://ftp.kr.freebsd.org/pub/xorg/unsupported/lib/PHIGS/pex/
[DIR]  ftp://147.52.159.12/mirrors/OpenBSD/cvs/XF4/xc-mit/extensions/lib/PEX/pex/
[DIR]  ftp://ftp.nstu.ru/pub/mirrors/ftp.x.org/unsupported/lib/PHIGS/pex/
[DIR]  ftp://ftp.gts.cz/.2/x11/pub/unsupported/lib/PHIGS/pex/
[DIR]  ftp://ftp.gts.cz/.2/x11/contrib/pex/
[DIR]  ftp://ftp.cs.cuhk.hk/mirror/ubuntu/pool/universe/p/plt-scheme/pex/
[DIR]  ftp://ftp.ntnu.no/old/pub/X11/contrib/pex/
[DIR]  ftp://ftp.gfdl.gov/pub/pex/
[DIR]  ftp://ftp.csie.nctu.edu.tw/pub/X11/pub/unsupported/lib/PHIGS/pex/
[DIR]  ftp://ftp.csie.nctu.edu.tw/pub/X11/contrib/pex/
[DIR]  ftp://ftp.uni-heidelberg.de/pub/X11/contrib/pex/
[DIR]  ftp://ftp.cesnet.cz/.vol/ftp.xfree86.org/pub/mirror/X.Org/contrib/pex/
[DIR]  ftp://ftp.cesnet.cz/.vol/ftp.xfree86.org/pub/mirror/X.Org/pub/unsupported/lib/PHIGS/pex/
[DIR]  ftp://ftp.su.se/pub/OpenBSD/cvs/XF4/xc-mit/extensions/lib/PEX/pex/
[DIR]  ftp://ftp.uni-siegen.de/pub/x11/x.org/pub/unsupported/lib/PHIGS/pex/
[DIR]  ftp://ftp.uni-siegen.de/pub/x11/x.org/contrib/pex/
[DIR]  ftp://ftp.gwdg.de/pub/x11/x.org/pub/unsupported/lib/PHIGS/pex/
[DIR]  ftp://ftp.gwdg.de/pub/x11/x.org/contrib/pex/
[DIR]  ftp://ftp.funet.fi/pub/csc/graphics/pex/
[DIR]  ftp://ftp.uvsq.fr/pub/X11/x.org/pub/unsupported/lib/PHIGS/pex/
[DIR]  ftp://ftp.uvsq.fr/pub/X11/x.org/contrib/pex/
[DIR]  ftp://ftp.xfree86.org/pub/mirror/X.Org/pub/unsupported/lib/PHIGS/pex/
[DIR]  ftp://ftp.xfree86.org/pub/mirror/X.Org/contrib/pex/
[DIR]  ftp://ftp.jp.xemacs.org/pub/X/opengroup/contrib/pex/
[DIR]  ftp://ftp.usa.openbsd.org/pub/OpenBSD/cvs/XF4/xc-mit/extensions/lib/PEX/pex/
[DIR]  ftp://ftp5.freebsd.org/pub/X/pub/unsupported/lib/PHIGS/pex/
[DIR]  ftp://ftp5.freebsd.org/pub/X/contrib/pex/
[DIR]  ftp://ftp.public-internet.co.uk/pub/OpenBSD/cvs/XF4/xc-mit/extensions/lib/PEX/pex/
[DIR]  ftp://ftp.opengroup.org/pub/ftp.x.org/contrib/pex/
[DIR]  ftp://ftp.opengroup.org/pub/ftp.x.org/pub/unsupported/lib/PHIGS/pex/
[DIR]  ftp://core.ring.gr.jp/pub/X/opengroup/contrib/pex/
[DIR]  ftp://ftp.in2p3.fr/pub/OpenBSD/cvs/XF4/xc-mit/extensions/lib/PEX/pex/
[DIR]  ftp://202.18.64.24/pub/X/opengroup/contrib/pex/
[DIR]  ftp://ftp.nsu.ru/mirrors/ftp.freebsd.org/pub/FreeBSD/development/OpenBSD-CVS/XF4/xc-mit/extensions/lib/PEX/pex/
[DIR]  ftp://194.67.80.52/.2/x.org/pub/unsupported/lib/PHIGS/pex/
[DIR]  ftp://194.67.80.52/.2/x.org/contrib/pex/
[DIR]  ftp://ftp.aist-nara.ac.jp/0/X11/x.org/contrib/pex/
[DIR]  ftp://ftp.aist-nara.ac.jp/0/X11/x.org/pub/unsupported/lib/PHIGS/pex/
[DIR]  ftp://192.87.102.42/vol/2/x11/unsupported/lib/PHIGS/pex/
[DIR]  ftp://192.87.102.42/vol/2/xcontrib/pex/
[DIR]  ftp://192.87.102.43/vol/2/xcontrib/pex/
[DIR]  ftp://192.87.102.43/vol/2/x11/unsupported/lib/PHIGS/pex/
[DIR]  ftp://133.37.44.6/pub/X/opengroup/contrib/pex/
[DIR]  ftp://ftp.cica.es/mirrors/X/pub/unsupported/lib/PHIGS/pex/