diff --git a/development/leo/README b/development/leo/README
new file mode 100644
index 0000000000..38b4e54297
--- /dev/null
+++ b/development/leo/README
@@ -0,0 +1,3 @@
+Leo is a PIM, an IDE and an outliner for programmers, authors and web
+designers. Leo's unique features organize data in a revolutionary way.
+Python scripts can easily access all parts of Leo outlines.
diff --git a/development/leo/doinst.sh b/development/leo/doinst.sh
new file mode 100644
index 0000000000..ff4c9b763a
--- /dev/null
+++ b/development/leo/doinst.sh
@@ -0,0 +1,13 @@
+if [ -x /usr/bin/update-desktop-database ]; then
+   /usr/bin/update-desktop-database -q usr/share/applications >/dev/null 2>&1
+fi
+
+if [ -x /usr/bin/update-mime-database ]; then
+  /usr/bin/update-mime-database usr/share/mime >/dev/null 2>&1
+fi
+
+if [ -e usr/share/icons/hicolor/icon-theme.cache ]; then
+  if [ -x /usr/bin/gtk-update-icon-cache ]; then
+    /usr/bin/gtk-update-icon-cache usr/share/icons/hicolor >/dev/null 2>&1
+  fi
+fi
diff --git a/development/leo/leo.SlackBuild b/development/leo/leo.SlackBuild
new file mode 100644
index 0000000000..1c1159481b
--- /dev/null
+++ b/development/leo/leo.SlackBuild
@@ -0,0 +1,92 @@
+#!/bin/sh
+
+# Slackware build script for leo
+
+# Copyright 2014 Dimitris Zlatanidis Greece-Orestiada
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, 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.
+
+PRGNAM=leo
+VERSION=${VERSION:-4.11-final}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i486 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+CWD=$(pwd)
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+if [ "$ARCH" = "i486" ]; then
+  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+fi
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM-$VERSION
+unzip $CWD/$PRGNAM-$VERSION.zip
+cd $PRGNAM-$VERSION
+chown -R root:root .
+find -L . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+ -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+python setup.py install --root=$PKG
+
+mkdir -p $PKG/usr/share/applications
+install -D -m644 $CWD/$PRGNAM.desktop $PKG/usr/share/applications/$PRGNAM.desktop
+
+mkdir -p $PKG/usr/share/pixmaps/
+install -D -m644 leo/Icons/LeoApp.ico $PKG/usr/share/pixmaps/$PRGNAM.svg
+
+find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
+  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a INSTALL.TXT PKG-INFO LICENSE.TXT $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+cat $CWD/doinst.sh > $PKG/install/doinst.sh
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
diff --git a/development/leo/leo.desktop b/development/leo/leo.desktop
new file mode 100644
index 0000000000..f8b3ca09fd
--- /dev/null
+++ b/development/leo/leo.desktop
@@ -0,0 +1,9 @@
+[Desktop Entry]
+Name=Leonine Editor with Outlines (leo)
+Name[he]= Leo
+Comment=Developer's Text Editor
+Exec=leo
+Icon=leo
+Terminal=false
+Type=Application
+Categories=Development;TextEditor
diff --git a/development/leo/leo.info b/development/leo/leo.info
new file mode 100644
index 0000000000..95a2fa266a
--- /dev/null
+++ b/development/leo/leo.info
@@ -0,0 +1,10 @@
+PRGNAM="leo"
+VERSION="4.11"
+HOMEPAGE="http://leoeditor.com"
+DOWNLOAD="https://pypi.python.org/packages/source/l/leo/leo-4.11-final.zip"
+MD5SUM="8366e2eb0ca67a398d149cd62d8d4990"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES="pysetuptools"
+MAINTAINER="Dimitris Zlatanidis"
+EMAIL="d.zlatanidis@gmail.com"
diff --git a/development/leo/slack-desc b/development/leo/slack-desc
new file mode 100644
index 0000000000..e8b055f0d9
--- /dev/null
+++ b/development/leo/slack-desc
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+   |-----handy-ruler------------------------------------------------------|
+leo: leo (Leonine Editor with Outlines)
+leo:
+leo: Leo is a PIM, IDE and outliner that accelerates the work flow
+leo: of programmers, authors and web designers.
+leo: 
+leo:
+leo:
+leo:
+leo:
+leo: Homepage: http://leoeditor.com 
+leo: