Twin directories of unix:

[DIR]  ftp://ftp.mari-el.ru/pub/unix/
[DIR]  ftp://ftp.uni-weimar.de/pub/unix/
[DIR]  ftp://ftp.parc.xerox.com/pub/music/digital_tradition/tune_software/unix/
[DIR]  ftp://ftp.ox.ac.uk/pub/comp/security/COAST/mirrors/ftp.vr.net/binaries/dec/unix/
[DIR]  ftp://ftp.ox.ac.uk/pub/crypto/pgp/OLD/unix/
[DIR]  ftp://ftp.ox.ac.uk/pub/crypto/pgp/pgpi/2.x/unix/
[DIR]  ftp://ftp.ox.ac.uk/pub/crypto/pgp/pgpi/5.0/unix/
[DIR]  ftp://ftp.ox.ac.uk/pub/crypto/pgp/pgpi/6.5/6.5.1i/unix/
[DIR]  ftp://ftp.uni-leipzig.de/pub/kommunikation/infosysteme/wwwclients/netscape/3.0/unix/
[DIR]  ftp://ftp.uni-leipzig.de/pub/kommunikation/infosysteme/wwwclients/netscape/3.01/unix/
[DIR]  ftp://ftp.uni-leipzig.de/pub/kommunikation/infosysteme/wwwclients/netscape/4.03/english/unix/
[DIR]  ftp://ftp.uni-leipzig.de/pub/kommunikation/infosysteme/wwwclients/netscape/gold/unix/
[DIR]  ftp://ftp.uni-leipzig.de/pub/grafik/unix/
[DIR]  ftp://ftp.aai.ee/pub/unix/
[DIR]  ftp://ftp.qms.com/pub/cta/out_going/unix/
[DIR]  ftp://ftp.qms.com/pub/cts/out_going/unix/
[DIR]  ftp://ftp.qms.com/pub/crc/out_going/unix/
[DIR]  ftp://ftp.qms.com/pub/drivers/unix/
[DIR]  ftp://ftp.netvision.net.il/pub/unix/
[DIR]  ftp://ftp.shrubbery.net/pub/pc/unix/
[DIR]  ftp://ftp.gfz-potsdam.de/pub/transfer/kg_igs/igsacc/product/SOFTWARE/sp3c_2_sp3a/unix/
[DIR]  ftp://ftp.zoology.ubc.ca/pub/unix/
[DIR]  ftp://ftp.mimuw.edu.pl/People/sebek/3060/old/materialy-plytka-SO-2004-cd/strona_www_SO/Linux/Kod/net/unix/
[DIR]  ftp://ftp.mimuw.edu.pl/People/sebek/3060/old/materialy-plytka-SO-2004/strona_www_SO/Linux/Kod/net/unix/
[DIR]  ftp://ftp.mimuw.edu.pl/People/sebek/3060/materialy-plytka-SO-2005/strona_www_SO/Linux/Kod/net/unix/
[DIR]  ftp://ftp.mimuw.edu.pl/People/jsbien/pto/ftp.cc.huji.ac.il/editors/editors/unix/
[DIR]  ftp://ftp.mimuw.edu.pl/People/jsbien/pto/ftp.cc.huji.ac.il/editors/unix/
[DIR]  ftp://ftp.mimuw.edu.pl/People/jsbien/pto/ftp.cc.huji.ac.il/tex/editors/unix/
[DIR]  ftp://ftp.mimuw.edu.pl/People/jsbien/pto/ftp.cc.huji.ac.il/tex/unix/
[DIR]  ftp://ftp.kemsu.ru/pub/mirrors/ftp.avp.ru/AutoPatches/unix/
[DIR]  ftp://ftp.kemsu.ru/pub/Text/RTFM/unix-faq/unix/
[DIR]  ftp://ftp.udel.edu/pub/people/donovan/unix/
[DIR]  ftp://82.96.64.7/pub/linux/kernel/people/marcelo/linux-2.4/net/unix/
[DIR]  ftp://ftp.dit.upm.es/mirrors/ftp.rediris.es/mirror/wu-ftpd/binaries/dec/unix/
[DIR]  ftp://ftp.dit.upm.es/mirrors/ftp.ifi.uio.no/pub/pgp/2.x/unix/
[DIR]  ftp://ftp.dit.upm.es/mirrors/ftp.ifi.uio.no/pub/pgp/5.0/unix/
[DIR]  ftp://ftp.dit.upm.es/mirrors/ftp.ifi.uio.no/pub/pgp/6.5/6.5.1i/unix/
[DIR]  ftp://ftp.dit.upm.es/mirrors/ftp.ox.ac.uk/pub/crypto/pgp/OLD/unix/
[DIR]  ftp://ftp.dit.upm.es/mirrors/ftp.ox.ac.uk/pub/crypto/pgp/pgpi/2.x/unix/
[DIR]  ftp://ftp.dit.upm.es/mirrors/ftp.ox.ac.uk/pub/crypto/pgp/pgpi/5.0/unix/
[DIR]  ftp://ftp.dit.upm.es/mirrors/ftp.ox.ac.uk/pub/crypto/pgp/pgpi/6.5/6.5.1i/unix/
[DIR]  ftp://ftp.csufresno.edu/pub/software/irc/unix/
[DIR]  ftp://ftp.csufresno.edu/pub/software/netscape/netscape6/6_PR1/unix/
[DIR]  ftp://ftp.csufresno.edu/pub/unix/
[DIR]  ftp://ftp.uni-freiburg.de/pub/bera/users/trish/doc/unix/
[DIR]  ftp://ftp.reed.edu/mirrors/faqs/mail/setup/unix/
[DIR]  ftp://ftp.reed.edu/mirrors/faqs/unix-faq/unix/
[DIR]  ftp://ftp.reed.edu/unix/
[DIR]  ftp://ftp.eenet.ee/pub/cpan/authors/id/K/KP/KPATTON/unix/
[DIR]  ftp://ftp.arnes.si/software/software/unix/