Packages using libtool:

Free:
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http://www.ens.fr/~laburthe/claire.html
ftp://ftp.x.org/contrib/widgets/motif/spinbox/
The GNU Guile project.
GTK+ and GIMP (Generic Image Manipulation Program).
   http://www.xcf.berkeley.edu/~gimp/gimp.html
SANE (Scanner Access Now Easy):  http://www.azstarnet.com/~davidm/
PalmOS/Pilot pilot-link: ftp://ryeham.ee.ryerson.ca/pub/PalmOS/

Nonfree:
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KDE (K Desktop Environment): http://www.kde.org/

Possible:
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OmniBroker (CORBA tool): http://www.ooc.com/ob.html