Twin directories of proflibs:

[DIR]  ftp://ftp.measurement-factory.com/FreeBSD-3.4.TMF/ftp/proflibs/
[DIR]  ftp://ftp.measurement-factory.com/FreeBSD-4.3-TMF/ftp/proflibs/
[DIR]  ftp://ftp.nerim.net/mirrors/FreeBSD/releases/i386/6.4-RC2/proflibs/
[DIR]  ftp://ftp.afps.chel.su/pub/FreeBSD/3.2-RELEASE/proflibs/
[DIR]  ftp://ftp.afps.chel.su/pub/FreeBSD/4.5-RELEASE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/releases/amd64/6.3-RELEASE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/releases/amd64/6.4-BETA/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/releases/amd64/7.0-RELEASE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/releases/amd64/7.1-BETA/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/releases/amd64/7.2-RELEASE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/releases/i386/6.3-RELEASE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/releases/i386/6.4-BETA/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/releases/i386/7.0-RELEASE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/releases/i386/7.1-BETA/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/releases/i386/7.1-BETA2/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/releases/i386/7.2-RC2/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/amd64/7.1-20080925-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/amd64/7.1-20080929-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/amd64/7.1-20081001-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/amd64/7.1-20081003-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/amd64/7.1-20081121-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/amd64/7.2-20090503-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/6.4-20081001-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/6.4-20081002-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/6.4-20081003-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/6.4-20081004-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/7.1-20081001-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/7.1-20081002-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/7.1-20081003-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/7.1-20081004-PRE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/8-20080927-CURRENT/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/8-20080929-CURRENT/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/8-20081001-CURRENT/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/8-20081003-CURRENT/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/8-20081122-CURRENT/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/8-20090502-CURRENT/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/snapshots/i386/8-20090608-CURRENT/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/old/2.1.7.1-RELEASE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/old/2.2.8-RELEASE/proflibs/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/old/2.0.5-RELEASE/proflibs/
[DIR]  ftp://ftp.cs.rpi.edu/mirrors/FreeBSD/releases/sparc64/7.1-RELEASE/proflibs/
[DIR]  ftp://ftp.vsi.ru/pub/FreeBSD/releases/amd64/6.1-RELEASE/proflibs/
[DIR]  ftp://ftp.vsi.ru/pub/FreeBSD/releases/i386/4.10-RELEASE/proflibs/
[DIR]  ftp://ftp.vsi.ru/pub/FreeBSD/releases/i386/4.11-RELEASE/proflibs/
[DIR]  ftp://ftp.vsi.ru/pub/FreeBSD/releases/i386/4.3-RELEASE/proflibs/
[DIR]  ftp://ftp.vsi.ru/pub/FreeBSD/releases/i386/6.1-RELEASE/proflibs/
[DIR]  ftp://ftp.vsi.ru/pub/FreeBSD/releases/i386/6.2-RELEASE/proflibs/
[DIR]  ftp://ftp.vsi.ru/pub/FreeBSD/releases/i386/7.0-RELEASE/proflibs/
[DIR]  ftp://ftp.cs.rpi.edu/mirrors/FreeBSD/releases/powerpc/7.1-RELEASE/proflibs/
[DIR]  ftp://ftp.fagskolen.gjovik.no/pub/FreeBSD/releases/i386/7.0-RELEASE/proflibs/