diff --git a/office/catdvi/README b/office/catdvi/README
new file mode 100644
index 0000000000..bc8b5f09ad
--- /dev/null
+++ b/office/catdvi/README
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+catdvi can be used to transform TeX DVI files into text, losing
+formatting its main aim on SBo is to be used by recoll, when it cannot
+extract text from pdf files by other means.
+
+
+catdvi is a program that translates TeX Device Independent (DVI) files
+into readable plain text. The program is under development. It
+produces satisfactory results in many cases, but still has some issues
+with complicated input.
+
+Goals Actually, "translate to plain text" can mean several different
+things, depending on the intended use:
+
+Output formatted text that resembles the layout of the DVI file as
+closely as possible, suitable for e.g. preview on a character cell
+terminal or printing on a teletype style printer. Output unformatted
+text in "read order". (Rather than "print order", which makes quite a
+difference with e.g. multi-column page layouts). Useful for searching,
+indexing and other kinds of postprocessing, and maybe also for export
+to different text processors. Output (not completely plain) text in
+read order with the formatting distilled into some kind of markup so
+that paragraph breaks, subscripts, superscripts, etc. can still be
+recognized. This functionality is essentially a (La-)TeX decompiler,
+useful for recovery of lost or otherwise unavailable .tex files.
+catdvi's principal target is to create human-readable text files from
+DVI input, and hence the first kind of translation.
+
+The second kind is supported as well because one of the developers
+needed it and it could be obtained as an easy by-product (based on the
+mostly true assumption that read order = order in the source file =
+order in the DVI file).
+
+The third kind of translation is the most difficult one to achieve
+since a DVI file does not contain logical markup information. The
+structure of the text has to be guessed from heuristic principles and
+an analysis of certain characteristics of TeX's output. No attempt in
+this direction has been made so far. But knowledge of some aspects of
+text structure would also help to improve the quality of layout in
+case 1. If it turns out these can reliably be guessed, an option to
+show them as markup will probably follow. This feature has low
+priority at the moment, especially since nobody has expressed a need
+for it.
+
diff --git a/office/catdvi/catdvi.SlackBuild b/office/catdvi/catdvi.SlackBuild
new file mode 100644
index 0000000000..432fd9078e
--- /dev/null
+++ b/office/catdvi/catdvi.SlackBuild
@@ -0,0 +1,123 @@
+#!/bin/bash
+
+# Slackware build script for catdvi
+
+# Copyright 2023 Lockywolf
+# 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.
+
+cd $(dirname $0) ; CWD=$(pwd)
+
+PRGNAM=catdvi
+VERSION=${VERSION:-0.14}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+PKGTYPE=${PKGTYPE:-tgz}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i586 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
+# the name of the created package would be, and then exit. This information
+# could be useful to other scripts.
+if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
+  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
+  exit 0
+fi
+
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+if [ "$ARCH" = "i586" ]; then
+  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "aarch64" ]; 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
+tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
+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 {} \;
+sed -i 39d kpathsea.c
+CFLAGS="$SLKCFLAGS -std=c89 " \
+./configure \
+  --prefix=/usr \
+  --libdir=/usr/lib${LIBDIRSUFFIX} \
+  --sysconfdir=/etc \
+  --localstatedir=/var \
+  --mandir=/usr/man \
+  --disable-static \
+  --build=$ARCH-slackware-linux
+
+make
+
+mkdir -p "$PKG/usr/bin"
+cp catdvi "$PKG/usr/bin/"
+mkdir -p "$PKG/usr/man/man1"
+cp catdvi.1 "$PKG/usr/man/man1"
+
+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
+
+find $PKG/usr/man -type f -exec gzip -9 {} \;
+for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a \
+AUTHORS \
+COPYING    \
+ChangeLog  \
+NEWS       \
+README     \
+TODO       \
+  $PKG/usr/doc/$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
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
diff --git a/office/catdvi/catdvi.info b/office/catdvi/catdvi.info
new file mode 100644
index 0000000000..3596129caa
--- /dev/null
+++ b/office/catdvi/catdvi.info
@@ -0,0 +1,10 @@
+PRGNAM="catdvi"
+VERSION="0.14"
+HOMEPAGE="https://catdvi.sf.net"
+DOWNLOAD="https://excellmedia.dl.sourceforge.net/project/catdvi/catdvi/0.14/catdvi-0.14.tar.gz"
+MD5SUM="41b04de48c1ca9abf8d3f9ecedc2b376"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES=""
+MAINTAINER="Lockywolf"
+EMAIL="for_sbo.catdvi_2023-05-17@lockywolf.net"
diff --git a/office/catdvi/slack-desc b/office/catdvi/slack-desc
new file mode 100644
index 0000000000..23362ead0c
--- /dev/null
+++ b/office/catdvi/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 ':'.
+
+      |-----handy-ruler------------------------------------------------------|
+catdvi: catdvi (dvi fallback for recoll)
+catdvi:
+catdvi: catdvi can be used to transform DVI files into text, losing
+catdvi: formatting its main aim on SBo is to be used by recoll, when it
+catdvi: cannot extract text from DVI files by other means.
+catdvi:
+catdvi:
+catdvi:
+catdvi:
+catdvi:
+catdvi: