JOE is a powerful console screen editor with a "mode-less" user interface similar to many user-friendly editors. JOE has some of the key bindings and many of the powerful features of GNU Emacs.

dte is a portable console text editor with features like multiple buffers/tabs, syntax highlighting, customizable color scheme (including support for 24-bit true colours), kitty keyboard protocol, editorconfig support, amongst other features.

Mogan is a scientific structural text editor, a fork of GNU TeXmacs.

Text Pieces is a tool for quick text transformations such as checksums, encoding, decoding, etc.

The basic features of Text Pieces are:

• Base64 encoding and decoding

• SHA-1, SHA-2 and MD5 checksums

• Prettify and minify JSON

• Covert JSON to YAML and vice versa

• Count lines, symbols and words

• Escape and unescape string, URL and HTML

• Remove leading and trailing whitespaces

• Sort and reverse sort lines

• Reverse lines and whole text

• You can write your own scripts and create custom tools

Tecoc is a portable version of the venerable TECO written in C that strives to keep the original behavior.

GNU TeXmacs is a text editing platform which is specialized for scientists. It is ideal for editing structured documents with different types of content. It has robust support for mathematical formulas and plots. It can also act as an interface to external mathematical programs such as R and Octave. TeXmacs is completely extensible via Guile.

GNU nano is a small and simple text editor for use in a terminal. Besides basic editing, it supports: undo/redo, syntax highlighting, spell checking, justifying, auto-indentation, bracket matching, interactive search-and-replace (with regular expressions), and the editing of multiple files.

libgtextutils is a text utilities library used by the fastx toolkit from the Hannon Lab.

aha (Ansi Html Adapter) converts ANSI escape sequences of a Unix terminal to HTML code.

dbacl is a fast Bayesian text and email classifier. It builds a variety of language models using maximum entropy (minimum divergence) principles, and these can then be used to categorize input data automatically among multiple categories.

CityHash provides hash functions for strings. The functions mix the input bits thoroughly but are not suitable for cryptography.

utf8proc is a small C library that provides Unicode normalization, case-folding, and other operations for data in the UTF-8 encoding.

The drm_tools package contains the following commands:

accudate

An extended version of the "date" program that has sub-second accuracy.

binformat

Format complex binary data into text.

binload

Load data into a binary file using simple commands from the input.

binorder

Sort, merge, search, retrieve or generate test data consisting of fixed size binary records.

binreplace

Find or find/replace in binary files.

binsplit

Split test data consisting of fixed size binary records into one or more output streams.

chardiff

Find changes between two files at the character level. Unlike "diff", it lists just the characters that differ, so if the 40,000th character is different only that one character will be shown, not the entire line.

columnadd

Add columns of integers, decimals, and/or times.

datasniffer

A utility for formatting binary data dumps.

dmath

Double precision interactive command line math calculator.

extract

Extract and emit data from text files based on character or token position.

execinput

A utility that reads from STDIN and executes each line as a command in a sub-process.

indexed_text

A utility for rapid retrieval of text by line numbers, in any order, from a text file.

mdump

Format binary data.

msgqueue

Create message queues and send/receive messages.

mbin

dtmbout

Multiple buffer in and out. Used for buffering a lot of data between a slow device and a fast device. Mostly for buffering streaming tape drives for use with slower network connections, so that streaming is maintained as much as possible to minimize wear on the tape device.

pockmark

Corrupt data streams - useful for testing error correction and data recovery.

tarsieve

Filter, list, or split a tar file.

docx2txt is a Perl based command line utility to convert Microsoft Office .docx documents to equivalent text documents. Latest version supports following features during text extraction.

• Character conversions; currency characters are converted to respective names like Euro.

• Capitalisation of text blocks.

• Center and right justification of text fitting in a line of (configurable) 80 columns.

• Horizontal ruler, line breaks, paragraphs separation, tabs.

• Indicating hyperlinked text along with the hyperlink (configurable).

• Handling (bullet, decimal, letter, roman) lists along with (attempt at) indentation.

Vale is a fully extensible linter that focuses on your own writing style by making use of rules in individual YAML files. It is syntax-aware on markup languages such as HTML, Markdown, Asciidoc, and reStructuredText. The community around it also has a list of style guides implemented with Vale in their styles repo.

utf8proc is a small C library that provides Unicode normalization, case-folding, and other operations for data in the UTF-8 encoding.

Useful tools when working with Unicode files when one doesn't know the writing system, doesn't have the necessary font, needs to inspect invisible characters, needs to find out whether characters have been combined or in what order they occur, or needs statistics on which characters occur.

• uniname defaults to printing the character offset of each character, its byte offset, its hex code value, its encoding, the glyph itself, and its name. It may also be used to validate UTF-8 input.

• unidesc reports the character ranges to which different portions of the text belong. It can also be used to identify Unicode encodings (e.g. UTF-16be) flagged by magic numbers.

• unihist generates a histogram of the characters in its input.

• ExplicateUTF8 is intended for debugging or for learning about Unicode. It determines and explains the validity of a sequence of bytes as a UTF8 encoding.

• utf8lookup provides a handy way to look up Unicode characters from the command line.

• unireverse reverse each line of UTF-8 input character-by-character.

Antiword is an application for displaying Microsoft Word documents. It can also convert the document to PostScript or XML. Only documents made by MS Word version 2 and version 6 or later are supported. The name comes from: "The antidote against people who send Microsoft Word files to everybody, because they believe that everybody runs Windows and therefore runs Word".

The two programs are useful for generating test data, for inspecting binary files, and for interfacing programs that generate textual output to programs that require binary input and conversely. They can also be useful when it is desired to reformat numbers.

• ascii2binary reads input consisting of ascii or hexadecimal representation numbers separated by whitespace and produces as output the binary equivalents. The type and precision of the binary output is selected using command line flags.

• binary2ascii reads input consisting of binary numbers and converts them to their ascii or hexadecimal representation. Command line flags specify the type and size of the binary numbers and provide control over the format of the output. Unsigned integers may be written out in binary, octal, decimal, or hexadecimal.

  Signed integers may be written out only in binary or decimal. Floating point numbers may be written out only decimal, either in standard or scientific notation. (If you want to examine the binary representation of floating point numbers, just treat the input as a sequence of unsigned characters.)

UTF8-CPP is a C++ library for handling UTF-8 encoded text in a portable way.

AutoComplete is a library allowing you to add IDE-like auto-completion (aka "code completion" or "Intellisense") to any Swing JTextComponent. Special integration is added for RSyntaxTextArea, since this feature is commonly needed when editing source code. Features include: Drop-down completion choice list. Optional companion "description" window, complete with full HTML support and navigable with hyperlinks. Optional parameter completion assistance for functions and methods, ala Eclipse and NetBeans. Completion information is typically specified in an XML file, but can even be dynamic.

ack is a tool for finding text inside files. It is designed for hackers and programmers by being fast, ignoring VCS directories, letting a user easily specify file types, match highlighting, Perl-Compatible Regular Expressions, and being faster to type than grep.

odt2txt is a command-line tool which extracts the text out of OpenDocument Texts, as produced by OpenOffice.org, KOffice, StarOffice and others.

odt2txt can also extract text from some file formats similar to OpenDocument Text, such as OpenOffice.org XML (*.sxw), which was used by OpenOffice.org version 1.x and older StarOffice versions. To a lesser extent, odt2txt may be useful to extract content from OpenDocument spreadsheets (*.ods) and OpenDocument presentations (*.odp).

Open Chinese Convert (OpenCC) converts between Traditional Chinese and Simplified Chinese, supporting character-level conversion, phrase-level conversion, variant conversion, and regional idioms among Mainland China, Taiwan, and Hong-Kong.