diff --git a/ap/graphviz/doinst.sh b/ap/graphviz/doinst.sh
new file mode 100644
index 00000000..408578d1
--- /dev/null
+++ b/ap/graphviz/doinst.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+/usr/bin/dot -c
diff --git a/ap/graphviz/graphviz-2.20.3.tar.gz.sha1 b/ap/graphviz/graphviz-2.20.3.tar.gz.sha1
new file mode 100644
index 00000000..f848b761
--- /dev/null
+++ b/ap/graphviz/graphviz-2.20.3.tar.gz.sha1
@@ -0,0 +1 @@
+63ae6bdb6b410387477d339225cc4f61c2bc7322  graphviz-2.20.3.tar.gz
diff --git a/ap/graphviz/graphviz.SlackBuild b/ap/graphviz/graphviz.SlackBuild
new file mode 100755
index 00000000..92781f95
--- /dev/null
+++ b/ap/graphviz/graphviz.SlackBuild
@@ -0,0 +1,122 @@
+#!/bin/bash
+# Build script for Slackware
+# Damien Goutte-Gattat "gouttegd" <Damien.Goutte-Gattat at e.ujf-grenoble.fr>
+#
+# Redistribution and use of this script, with or without modifications, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AS IS'' AND ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Latest graphviz sourcecode is available at:
+# http://www.graphviz.org/
+#
+# Recommends: d/swig
+
+# Source package infos
+NAMESRC=${NAMESRC:-graphviz}
+VERSION=${VERSION:-2.20.3}
+ARCHIVE=${ARCHIVE:-$NAMESRC-$VERSION.tar.gz}
+WGET=${WGET:-http://www.graphviz.org/pub/graphviz/ARCHIVE/$ARCHIVE}
+
+# Built package infos
+NAMETGZ=${NAMETGZ:-graphviz}
+BUILD=${BUILD:-1GGD}
+ARCH=${ARCH:-i486}
+TARGET=${TARGET:-i486}
+
+# Directories
+TMP=${TMP:-/tmp}
+OUT=${OUT:-$TMP/build}
+PKG=${PKG:-$OUT/$NAMETGZ}
+CWD=$(pwd)
+
+set -e  # Quit if a command returns non-zero
+
+# Sanity checks
+if [ $UID -eq 0 ]; then
+    echo "You should NOT run this script as ROOT!"
+    exit 1
+fi
+if [ ! -d $TMP ]; then
+    echo "$TMP does not exist or is not a directory!"
+    exit 1
+fi
+
+# Compilation flags
+case "$ARCH" in
+i?86)
+    CPUOPT="-O2 -march=$ARCH -mtune=i686"
+    ;;
+*)
+    CPUOPT="-O2"
+    ;;
+esac
+
+# Get and verify the source archive
+if [ ! -r $ARCHIVE ]; then
+    wget "$WGET"
+fi
+sha1sum -c $ARCHIVE.sha1
+NAME=$(tar ft $ARCHIVE | head -n 1 | cut -d / -f 1)
+
+# Compile
+cd $TMP
+echo "Building $ARCHIVE..."
+tar xf $CWD/$ARCHIVE
+cd $NAME
+CFLAGS=$CPUOPT \
+CXXFLAGS=$CPUOPT \
+./configure \
+  --prefix=/usr \
+  --mandir=/usr/man \
+  --docdir=/usr/doc/$NAME \
+  --disable-static \
+  --enable-ltdl \
+  --disable-sharp \
+  --enable-python25
+make -j 3
+make install DESTDIR=$PKG
+
+# Strip binaries
+find $PKG | xargs file | grep "ELF 32-bit LSB" | cut -d : -f 1 | \
+  xargs strip --strip-unneeded 2> /dev/null
+
+# Compress man and info pages
+find $PKG/usr/man -type f -exec gzip -9 {} \;
+
+# Install the documentation
+mkdir -p $PKG/usr/doc
+mv $PKG/usr/share/graphviz/doc  $PKG/usr/doc/$NAME
+mv $PKG/usr/share/graphviz/demo $PKG/usr/doc/$NAME
+rmdir $PKG/usr/share/graphviz/{examples,smyrna}
+
+# Copy slack-desc and doinst.sh files
+install -D -m 644 $CWD/slack-desc $PKG/install/slack-desc
+install    -m 755 $CWD/doinst.sh  $PKG/install/doinst.sh
+
+# Package the tree
+cd $PKG
+mkdir -p $OUT
+PACKAGING="
+chown root:root . -R
+/sbin/makepkg -l y -c n $OUT/$NAMETGZ-$VERSION-$ARCH-$BUILD.tgz
+rm -rf $PKG
+rm -rf $TMP/$NAME
+"
+if type -p fakeroot ; then
+    echo "$PACKAGING" | fakeroot
+else
+    su -c "$PACKAGING"
+fi
diff --git a/ap/graphviz/slack-desc b/ap/graphviz/slack-desc
new file mode 100644
index 00000000..3fcfdca0
--- /dev/null
+++ b/ap/graphviz/slack-desc
@@ -0,0 +1,12 @@
+        |-----handy-ruler------------------------------------------------------|
+graphviz: graphviz (Graph visualization tools)
+graphviz: 
+graphviz: A collection of tools for the manipulation and layout of graphs
+graphviz: (as in nodes and edges, not as in barcharts).
+graphviz: 
+graphviz: 
+graphviz: 
+graphviz: 
+graphviz: 
+graphviz: 
+graphviz: