7plus

An encoder for packet radio

a2ps

Any to PostScript filter

acroread

Adobe's PDF reader

active-dvi

A DVI previewer and a presenter for slides written in LaTeX

adiff

wordwise diff

agrep

agrep is a tool for the fast searching of text allowing for errors in the search pattern.

aiksaurus

A thesaurus lib, tool and database

an

Very fast anagram generator with dictionary lookup

ansifilter

Handles text files containing ANSI terminal escape codes

antiword

free MS Word reader

antixls

It is used to prints out an XLS file with minimal formatting, or extracts the data into CSV format.

apvlv

Alf's PDF Viewer Like Vim

asa

ASA Carriage control conversion for ouput by Fortran programs

asciidoc

A text document format for writing short documents, articles, books and UNIX man pages

aspell

A spell checker replacement for ispell

bact

Boosting Algorithm for Classification of Trees

barcode

barcode generator

bibclean

BibTeX bibliography prettyprinter and syntax checker

bibletime

Qt4 Bible study application using the SWORD library.

bibus

Bibliographic and reference management software, integrates with OO.o and MS Word

bibutils

Interconverts between various bibliography formats using a common XML intermediate

binfind

binfind searches files for a byte sequence specified on the command line.

bogosort

A file sorting program which uses the bogosort algorithm

build-docbook-catalog

DocBook XML catalog auto-updater

c2ps

Generates a beautified ps document from a source file (c/c++)

calibre

Ebook management application.

catdoc

A convertor for Microsoft Word, Excel and RTF Files to text

cb2bib

Tool for extracting unformatted bibliographic references

cedilla

UTF-8 to postscript converter.

chasen

Japanese Morphological Analysis System, ChaSen

chm2pdf

A script that converts a CHM file into a single PDF file.

chmsee

Gecko-based HTML Help (chm) viewer

clara

An OCR (Optical Character Recognition) program

cmigemo

C/Migemo -- Migemo library implementation in C

code2html

Converts source files to colored HTML output.

convertlit

CLit converts MS ebook .lit files to .opf (xml+html+png+jpg)

convmv

convert filenames to utf8 or any other charset

cook

COOK is an embedded language which can be used as a macro preprocessor and for similar text processing.

crf++

Yet Another CRF toolkit for segmenting/labelling sequential data

crm114

A powerful text processing tool, mainly used for spam filtering

csvfix

A stream editor for manipulating CSV files

cuneiform

An enterprise quality optical character recognition (OCR) engine by Cognitive Technologies

cwtext

Text to Morse Code converter

dbacl

digramic Bayesian text classifier

ddir

A perl implementation of the tree(1) program

delta

Heuristically minimizes interesting files

dictd

Dictionary Client/Server for the DICT protocol

diction

Diction and style checkers for english and german texts

diffpdf

Program that textually or visually compares two PDF files

ding

Tk based dictionary (German-English) (incl. dictionary itself)

djview

Portable DjVu viewer using Qt4

djvu

DjVu viewers, encoders and utilities

docbook-dsssl-stylesheets

DSSSL Stylesheets for DocBook.

docbook-sgml

A helper package for sgml docbook

docbook-sgml-dtd

Docbook SGML DTD 4.4

docbook-sgml-utils

Shell scripts to manage DocBook documents

docbook-xml-dtd

Docbook DTD for XML

docbook-xml-simple-dtd

Docbook DTD for XML

docbook-xsl-ns-stylesheets

XSL Stylesheets for Docbook

docbook-xsl-stylesheets

XSL Stylesheets for Docbook

docbook2X

Tools to convert docbook to man and info

docx2txt

Convert MS Office docx files to plain text

dos2unix

Convert DOS or MAC text files to UNIX format or vice versa

duali

Arabic dictionary based on the DICT protocol

duconv

A small util that converts from dos<->unix

dvibook

DVI file utilities: dvibook, dviconcat, dvitodvi, and dviselect.

dvipdfm

DVI to PDF translator

dvipdfmx

DVI to PDF translator with multi-byte character support

dvipng

Translate DVI files into PNG or GIF graphics

dvipsk

DVI-to-PostScript translator

dvisvgm

Converts DVI files to SVG

ebook-tools

Tools for accessing and converting various ebook file formats.

enchant

Spellchecker wrapping library

enscript

powerful text-to-postscript converter

epdfview

Lightweight PDF viewer using Poppler and GTK+ libraries.

epspdf

GUI and command-line converter for [e]ps and pdf

epstool

Creates or extracts preview images in EPS files, fixes bounding boxes,converts to bitmaps.

evince

Simple document viewer for GNOME

expander

Expander is a utility that acts as a filter for text editors.

fbreader

E-Book Reader. Supports many e-book formats.

fdftk

Acrobat FDF Toolkit

flpsed

Pseudo PostScript editor

freepwing

FreePWING is a free JIS X 4081 (subset of EPWING V1) formatter

gentoo-guide-xml-dtd

DTD for Gentoo-Guide Style XML Files

getxbook

Download books from google, amazon, barnes and noble.

ghostscript-gpl

Ghostscript is an interpreter for the PostScript language and for PDF

glark

File searcher similar to grep but with fancy output

glosung

watch word program for the GNOME2 desktop (watch word (german): losung)

gnome-doc-utils

A collection of documentation utilities for the Gnome project

gnopaster

A submitter for gnopaste, a nopaste service like http://nopaste.info

gocr

An OCR (Optical Character Recognition) reader

goldendict

Feature-rich dictionary lookup program

gonzui

source code search engine

grutatxt

A converter from plain text to HTML and other markup languages

gsview

gsView PostScript and PDF viewer

gtkspell

Spell checking widget for GTK

gtranslator

An enhanced gettext po file editor for GNOME

gv

Viewer for PostScript and PDF documents using Ghostscript

hd2u

Dos2Unix like text file converter

highlight

converts source code to formatted text ((X)HTML, RTF, (La)TeX, XSL-FO, XML) with syntax highlight

hnb

A program to organize many kinds of data in one place.

htag

random signature maker

html-xml-utils

A number of simple utilities for manipulating HTML and XML files.

html2text

A HTML to text converter

html401

DTDs for the HyperText Markup Language 4.01

htmlc

HTML template files expander

htmldoc

Convert HTML pages into a PDF document

htmlinc

HTML Include System by Ulli Meybohm

htmlrecode

Recodes HTML file using a new character set

htmltidy

Tidy the layout and correct errors in HTML and XML documents

htp

An HTML preprocessor

hunspell

Hunspell spell checker - an improved replacement for myspell in OOo.

hyperestraier

a full-text search system for communities

info2html

Converts GNU .info files to HTML

iso-codes

Provides the list of country and language names

ispell

fast screen-oriented spelling checker

jabref

GUI frontend for BibTeX, written in Java

jadetex

TeX macros used by Jade TeX output

jing

Jing: A RELAX NG validator in Java

jpdftweak

Swiss Army Knife for PDF files

kbibtex

BibTeX editor for KDE to edit bibliographies used with LaTeX

kchmviewer

KchmViewer is a feature rich chm file viewer, based on Qt.

kding

KDing is a KDE port of Ding, a dictionary lookup program.

kiwix

A ZIM reader, especially for offline web content retrieved from Wikipedia

kpaste

Command-line tool to paste to paste.kde.org

landslide

Landslide generates a slideshow using the slides that power the html5-slides presentation

lcdf-typetools

Font utilities for eg manipulating OTF

letterize

Generate English-plausible alphabetic mnemonics for a phone number

libexttextcat

Library implementing N-gram-based text categorization

libgxps

Library for handling and rendering XPS documents

libpaper

Library for handling paper characteristics

libspectre

A library for rendering Postscript documents

libwpd

WordPerfect Document import/export library

libwpg

C++ library to read and parse graphics in WPG

libwps

Microsoft Works file word processor format import filter library

libxmlpatch

A set of tools to create and apply patch to XML files using XPath

linuxdoc-tools

A toolset for processing LinuxDoc DTD SGML files

llpp

a graphical PDF viewer which aims to superficially resemble less(1)

lodgeit

Command-line interface to paste.pocoo.org

lout

high-level language for document formatting

lv

Powerful Multilingual File Viewer

mathtex

MathTeX lets you easily embed LaTeX math in your own html pages, blogs, wikis, etc

mbtpdfasm

mbtPdfAsm can assemble/merge PDF files, extract information from PDF files, and update the metadata in PDF files.

mecab

Yet Another Part-of-Speech and Morphological Analyzer

mftrace

Traces TeX fonts to PFA or PFB fonts (formerly pktrace)

mht-rip

convert mht/mhtml files to something usable

migemo

Migemo is Japanese Incremental Search Tool

mpage

Many to one page printing utility

multitail

Tail with multiple windows

mupdf

a lightweight PDF viewer and toolkit written in portable C

mythes

A simple thesaurus for Libreoffice

namazu

Namazu is a full-text search engine

nfoview

simple viewer for NFO files, which are ASCII art in the CP437 codepage

notecase

Hierarchical note manager written using GTK+ and C++

noweb

a literate programming tool, lighter than web

o3read

Converts OpenOffice formats to text or HTML.

ocrad

GNU Ocrad is an OCR (Optical Character Recognition) program

odt2txt

A simple converter from OpenDocument Text to plain text

openjade

Jade is an implementation of DSSSL - an ISO standard for formatting SGML and XML documents

opensp

A free, object-oriented toolkit for SGML parsing and entity management

ots

Open source Text Summarizer, as used in newer releases of abiword and kword.

pandoc

Conversion between markup formats

paps

Unicode-aware text to PostScript converter

par

a paragraph reformatter, vaguely similar to fmt, but better

passivetex

A namespace-aware XML parser written in Tex

pastebin

CLI to pastebin.com

pdf2djvu

A tool to create DjVu files from PDF files

pdf2html

Converts pdf files to html files

pdf2oo

Converts pdf files to odf

pdfgrep

A tool similar to grep which searches text in PDFs

pdfjam

pdfnup, pdfjoin and pdf90

pdfminer

Python tool for extracting information from PDF documents

pdfsandwich

generator of sandwich OCR pdf files

pdfshuffler

PDF-Shuffler is GUI app that can merge or split pdfs and rotate, crop and rearrange their pages.

pdftk

A tool for manipulating PDF documents

pep

General purpose filter and file cleaning program

pinfo

Hypertext info and man viewer based on (n)curses

po4a

Tools for helping translation of documentation

podofo

PoDoFo is a C++ library to work with the PDF file format.

poppler

PDF rendering library based on the xpdf-3.0 code base

poppler-data

Data files for poppler to support uncommon encodings without xpdfrc

ps2eps

Tool for generating Encapsulated Postscript Format (EPS,EPSF) files from one-page Postscript documents

ps2pkm

Tool that converts a PostScript type1 font into a corresponding TeX PK font

psiconv

An interpreter for Psion 5(MX) file formats

pspdftool

Tool for prepress preparation of PDF and PostScript documents

pspresent

A tool to display full-screen PostScript presentations.

pstotext

Extract ASCII text from a PostScript or PDF file

psutils

PostScript Utilities

pybookreader

A book reader for .fb2 .html and plain text (possibly gzipped)

pylize

Python HTML Slideshow Generator using HTML and CSS

pyrpub

content conversion tool for Palm

pytextile

A Python implementation of Textile, Dean Allen's Human Text Generator for creating (X)HTML.

qgoogletranslator

GUI for google translate web service

qpdf

A command-line program that does structural, content-preserving transformations on PDF files

qpdfview

A tabbed PDF viewer using the poppler library

queequeg

A checker for English grammar, for people who are not native English.

rarian

A documentation metadata library

recode

Convert files between various character sets

reed

This is a text pager (text file viewer), used to display etexts.

refbase

Web-based solution for managing scientific literature, references and citations

rfcutil

return all related RFCs based upon a number or a search string

rhyme

Console based Rhyming Dictionary

rman

PolyGlotMan man page translator AKA RosettaMan

rnv

A lightweight Relax NG Compact Syntax validator

robodoc

Automating Software Documentation

ronn

Ronn converts simple, human readable textfiles to roff for terminal display, and also to HTML.

rpl

Intelligent recursive search/replace utility

rtf2html

RTF to HTML converter.

sablotron

An XSLT Parser in C++

sary

Sary: suffix array library and tools

scrollkeeper

Dummy scrollkeeper for testing rarian

scrollkeeper-dtd

DTD from the Scrollkeeper package

sdcv

Console version of Stardict program

searchmonkey

Powerful text searches using regular expressions

sgml-common

Base ISO character entities and utilities for SGML

sgmltools-lite

Python interface to SGML software in a DocBook/OpenJade env

sgrep

Structured grep: tool for searching and indexing text, SGML,XML and HTML files and filtering text streams using structural criteria.

sigil

Sigil is a multi-platform WYSIWYG ebook editor for ePub format.

silvercity

A lexical analyser for many languages.

skribe

Skribe is a text processor for technical documents written in scheme.

sloccount

Tools for counting Source Lines of Code (SLOC) for a large number of languages

spellutils

spellutils includes 'newsbody' (useful for spellchecking in mails, etc.)

stardict

A international dictionary supporting fuzzy and glob style matching

sword

Library for Bible reading software.

sword-modules

A collection of modules for the SWORD project

t1utils

Type 1 Font utilities

tabler

A utility to create text art tables from delimited input

talkfilters

Convert ordinary English text into text that mimics a stereotyped or otherwise humorous dialect

teckit

Text Encoding Conversion toolkit

tesseract

An OCR Engine that was developed at HP and now at Google

tex-guy

Set of TeX DVI previewers and printer drivers.

texi2html

Perl script that converts Texinfo to HTML

texlive

A complete TeX distribution

texlive-core

A complete TeX distribution

tkinfo

Info Browser in TK

tkman

TkMan man and info page browser

tofrodos

text file conversion utility that converts ASCII files between the MSDOS format and the Unix format

tokyodystopia

A fulltext search engine for Tokyo Cabinet

trang

Multi-format schema converter based on RELAX NG

tree

Lists directories recursively, and produces an indented listing of files.

ttf2pt1

True Type Font to Postscript Type 1 Converter

tuxcards

A hierarchical notebook

txt2man

txt2man, src2man (C only) and bookman convert scripts for man pages.

txt2pdbdoc

Text/HTML to Doc file converter for the Palm Pilot

txt2tags

A tool for generating marked up documents (HTML, SGML, ...) from a plain text file with markup

u2ps

A text to PostScript converter like a2ps, but supports UTF-8

unac

Library and command-line tool for removing accents from characters

unix2dos

UNIX to DOS text file format converter

unpaper

Post-processor for scanned and photocopied book pages

unrtf

Converts RTF files to various formats

utrac

Universal Text Recognizer and Converter

uudeview

uu, xx, base64, binhex decoder

uvconv

A small utility that converts among Vietnamese charsets

vilistextum

Html to ascii converter specifically programmed to get the best out of incorrect html

vlna

Add nonbreakable spaces after some prepositions in Czech texts

wdiff

Create a diff disregarding formatting

webgen

A template-based static website generator.

wgetpaste

Command-line interface to various pastebins

wiki2beamer

Tool to produce LaTeX Beamer code from wiki-like input.

winefish

LaTeX editor based on Bluefish

wklej

A wklej.org submitter

wpd2odt

WordPerfect Document (wpd/wpg) to Open document (odt/odg) converter

wscr

A Lightweight and Fast Anagram Solver

wv

Tool for conversion of MSWord doc and rtf files to something readable

wv2

Excellent MS Word filter lib, used in most Office suites

xapian-omega

An application built on Xapian, consisting of indexers and a CGI search frontend.

xchm

Utility for viewing Microsoft .chm files.

xdvik

DVI previewer for X Window System

xdvipdfmx

Extended dvipdfmx for use with XeTeX and other unicode TeXs.

xfbib

a lightweight BibTeX editor

xhtml1

DTDs for the eXtensible HyperText Markup Language 1.0

xindy

A Flexible Indexing System

xiphos

A bible study frontend for Sword (formerly known as GnomeSword)

xlhtml

Convert MS Excel and Powerpoint files to HTML

xlsx2csv

Convert MS Office xlsx files to CSV

xml2

These tools are used to convert XML and HTML to and from a line-oriented format.

xml2doc

Tool to convert simple XML to a variety of formats (pdf, html, txt, manpage)

xmldiff

A tool that figures out the differences between two similar XML files

xmlformat

Reformat XML documents to your custom style

xmlstarlet

A set of tools to transform, query, validate, and edit XML documents

xmlto

script for converting XML and DocBook formatted documents to a variety of output formats

xournal

Xournal is an application for notetaking, sketching, and keeping a journal using a stylus.

yagf

Graphical front-end for cuneiform and tesseract OCR tools

yelp-tools

Collection of tools for building and converting documentation

yudit

free (Y)unicode text editor for all unices

zathura

A highly customizable and functional document viewer

zathura-djvu

DjVu plug-in for zathura

zathura-pdf-poppler

PDF plug-in for zathura

zathura-ps

PostScript plug-in for zathura

zemberek-server

A Turkish spell checker server based on Zemberek NLP library

zpspell

Zemberek-Pardus spell checker interface.

7plus

gv

qpdfview

a2ps

hd2u

queequeg

acroread

highlight

rarian

active-dvi

hnb

recode

adiff

htag

reed

agrep

html-xml-utils

refbase

aiksaurus

html2text

rfcutil

an

html401

rhyme

ansifilter

htmlc

rman

antiword

htmldoc

rnv

antixls

htmlinc

robodoc

apvlv

htmlrecode

ronn

asa

htmltidy

rpl

asciidoc

htp

rtf2html

aspell

hunspell

sablotron

bact

hyperestraier

sary

barcode

info2html

scrollkeeper

bibclean

iso-codes

scrollkeeper-dtd

bibletime

ispell

sdcv

bibus

jabref

searchmonkey

bibutils

jadetex

sgml-common

binfind

jing

sgmltools-lite

bogosort

jpdftweak

sgrep

build-docbook-catalog

kbibtex

sigil

c2ps

kchmviewer

silvercity

calibre

kding

skribe

catdoc

kiwix

sloccount

cb2bib

kpaste

spellutils

cedilla

landslide

stardict

chasen

lcdf-typetools

sword

chm2pdf

letterize

sword-modules

chmsee

libexttextcat

t1utils

clara

libgxps

tabler

cmigemo

libpaper

talkfilters

code2html

libspectre

teckit

convertlit

libwpd

tesseract

convmv

libwpg

tex-guy

cook

libwps

texi2html

crf++

libxmlpatch

texlive

crm114

linuxdoc-tools

texlive-core

csvfix

llpp

tkinfo

cuneiform

lodgeit

tkman

cwtext

lout

tofrodos

dbacl

lv

tokyodystopia

ddir

mathtex

trang

delta

mbtpdfasm

tree

dictd

mecab

ttf2pt1

diction

mftrace

tuxcards

diffpdf

mht-rip

txt2man

ding

migemo

txt2pdbdoc

djview

mpage

txt2tags

djvu

multitail

u2ps

docbook-dsssl-stylesheets

mupdf

unac

docbook-sgml

mythes

unix2dos

docbook-sgml-dtd

namazu

unpaper

docbook-sgml-utils

nfoview

unrtf

docbook-xml-dtd

notecase

utrac

docbook-xml-simple-dtd

noweb

uudeview

docbook-xsl-ns-stylesheets

o3read

uvconv

docbook-xsl-stylesheets

ocrad

vilistextum

docbook2X

odt2txt

vlna

docx2txt

openjade

wdiff

dos2unix

opensp

webgen

duali

ots

wgetpaste

duconv

pandoc

wiki2beamer

dvibook

paps

winefish

dvipdfm

par

wklej

dvipdfmx

passivetex

wpd2odt

dvipng

pastebin

wscr

dvipsk

pdf2djvu

wv

dvisvgm

pdf2html

wv2

ebook-tools

pdf2oo

xapian-omega

enchant

pdfgrep

xchm

enscript

pdfjam

xdvik

epdfview

pdfminer

xdvipdfmx

epspdf

pdfsandwich

xfbib

epstool

pdfshuffler

xhtml1

evince

pdftk

xindy

expander

pep

xiphos

fbreader

pinfo

xlhtml

fdftk

po4a

xlsx2csv

flpsed

podofo

xml2

freepwing

poppler

xml2doc

gentoo-guide-xml-dtd

poppler-data

xmldiff

getxbook

ps2eps

xmlformat

ghostscript-gpl

ps2pkm

xmlstarlet

glark

psiconv

xmlto

glosung

pspdftool

xournal

gnome-doc-utils

pspresent

yagf

gnopaster

pstotext

yelp-tools

gocr

psutils

yudit

goldendict

pybookreader

zathura

gonzui

pylize

zathura-djvu

grutatxt

pyrpub

zathura-pdf-poppler

gsview

pytextile

zathura-ps

gtkspell

qgoogletranslator

zemberek-server

gtranslator

qpdf

zpspell