Things that depend on GnuTLS...

gistfile1.txt

$ apt-cache rdepends libgnutls26 | grep -v lib
Reverse Depends:
aiccu
vino
qemu-kvm
exim4-daemon-light
exim4-daemon-heavy
cups
xen-utils-4.1
wine1.4-amd64
vlc-nox
rsyslog-gnutls
qemu-system
qemu-kvm-spice
python-gnutls
mutt-patched
empathy-call
chromium-browser
aiccu
vino
telepathy-gabble
qemu-kvm
pacemaker
ntfs-3g
nautilus-sendto-empathy
mutt
lynx-cur
gnutls-bin
exim4-daemon-light
exim4-daemon-heavy
empathy
cups
xxxterm
xfce4-mailwatch-plugin
xen-utils-4.1
wzdftpd
wmbiff
wine1.4-amd64
weechat-curses
weechat-core
webfs
vpnc
vlc-nox
shishi-kdc
scrollz
rsyslog-gnutls
qutim
qemu-system
qemu-kvm-spice
python-gnutls
proxytunnel
prelude-manager
postal
plasma-widget-mail
pianobar
pan
pacemaker-mgmt-client
pacemaker-mgmt
openvas-server
openvas-plugins-base
nzbget
ngircd
mutt-patched
msmtp-gnome
msmtp
mpop-gnome
mpop
minbif-webcam
minbif
mandos-client
maki
kildclient
jd
ircd-ratbox
infinoted-0.5
gurlchecker
gtk-gnutella
gsasl
gnu-smalltalk
gnomint
gkrellm
freewheeling
freetds-bin
filezilla
empathy-call
elinks-lite
elinks
ekg2-remote
ekg2-jabber
echoping
csync2
claws-mail
charybdis
centerim-utf8
centerim-fribidi
centerim
bitlbee
aria2
anubis
aiccu
abiword
vino
telepathy-salut
telepathy-gabble
tdsodbc
qemu-kvm
pacemaker
ntfs-3g
nautilus-sendto-empathy
mutt
lynx-cur
lftp
gnutls-bin
exim4-daemon-light
exim4-daemon-heavy
empathy
cups