GNU Midnight Commander is a command-line file manager laid out in a common two-pane format. In addition to standard file management tasks such as copying and moving, Midnight Commander also supports viewing the contents of RPM package files and other archives and managing files on other computers via FTP or FISH. It also includes a powerful text editor for opening text files.

GnuDOS is a set of programs designed to help new users of the GNU system in growing accustomed to the system, particularly users who might be coming from a DOS background. It consists of a file manager, a text editor and a form designer for the console as well as a core library for building similar utilities.

Libmcrypt is a data encryption library. The library is thread safe and provides encryption and decryption functions. This version of the library supports many encryption algorithms and encryption modes. Some algorithms which are supported: SERPENT, RIJNDAEL, 3DES, GOST, SAFER+, CAST-256, RC2, XTEA, 3WAY, TWOFISH, BLOWFISH, ARCFOUR, WAKE and more.

MCrypt is a replacement for the old crypt() package and crypt(1) command, with extensions. It allows developers to use a wide range of encryption functions, without making drastic changes to their code. It allows users to encrypt files or data streams without having to be cryptographers. The companion to MCrypt is Libmcrypt, which contains the actual encryption functions themselves, and provides a standardized mechanism for accessing them.

Mhash is a thread-safe hash library, implemented in C, and provides a uniform interface to a large number of hash algorithms. These algorithms can be used to compute checksums, message digests, and other signatures. The HMAC support implements the basics for message authentication, following RFC 2104.

Algorithms currently supplied are:

CRC-32, CRC-32B, ALDER-32, MD-2, MD-4, MD-5, RIPEMD-128, RIPEMD-160, RIPEMD-256, RIPEMD-320, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, HAVAL-128, HAVAL-160, HAVAL-192, HAVAL-256, TIGER, TIGER-128, TIGER-160, GOST, WHIRLPOOL, SNEFRU-128, SNEFRU-256.

Orthanc is a standalone DICOM server with a RESTful API and plugin mechanism for extending its functionality.

(X)MedCon can be used to convert between different file formats used in medical imaging. The supported formats are ACR-NEMA 2.0, Analyze (SPM), Concorde/μPET, DICOM 3.0, CTI ECAT 6/7, NIfTI-1, Interfile 3.3, PNG, and GIF87a/89a. This package includes a command-line utility (medcon) and a GTK+ based GUI application (xmedcon).

This package provides GNUHealth Personal Health Record application for desktop and mobile devices that integrates with the GNU Health Federation.

This package provides plugins to use MySQL or MariaDB as the database backend of an Orthanc DICOM server instead of SQLite.

This package provides plugins to use MySQL or MariaDB as the database backend of an Orthanc DICOM server instead of SQLite.

(X)MedCon can be used to convert between different file formats used in medical imaging. The supported formats are ACR-NEMA 2.0, Analyze (SPM), Concorde/μPET, DICOM 3.0, CTI ECAT 6/7, NIfTI-1, Interfile 3.3, PNG, and GIF87a/89a. This package includes a command-line utility (medcon) and a GTK+ based GUI application (xmedcon).

This package provides plugins to use PostgreSQL as the database backend of an Orthanc DICOM server instead of SQLite.

Mercury is a logic/functional programming language which combines the clarity and expressiveness of declarative programming with advanced static analysis and error detection features. Its highly optimized execution algorithm delivers efficiency far in excess of existing logic programming systems, and close to conventional programming systems. Mercury addresses the problems of large-scale program development, allowing modularity, separate compilation, and numerous optimization/time trade-offs.

Mercury is a logic/functional programming language which combines the clarity and expressiveness of declarative programming with advanced static analysis and error detection features. Its highly optimized execution algorithm delivers efficiency far in excess of existing logic programming systems, and close to conventional programming systems. Mercury addresses the problems of large-scale program development, allowing modularity, separate compilation, and numerous optimization/time trade-offs.

M2-Planet, the PLAtform NEutral Transpiler, when combined with mescc-tools, compiles a subset of the C language into working binaries with introspective steps in between. It is self-hosting and for bootstrapping it also has an implementation in the M1 macro assembly language. M2-Planet is built as Phase-5 of the full source bootstrapping process and is capable of building GNU Mes.

GNU Mes--Maxwell Equations of Software--brings the Reduced Binary Seed bootstrap to Guix and aims to help create full source bootstrapping for GNU/Linux distributions. It consists of a mutual self-hosting Scheme interpreter in C and a Nyacc-based C compiler in Scheme and is compatible with Guile.

Mescc-tools is a collection of tools for use in a full source bootstrapping process. It consists of the M1 macro assembler, the hex2 linker, the blood-elf symbol table generator, the kaem shell, exec_enable and get_machine.

NYACC is set of Guile modules for generating parsers and lexical analyzers. It provides sample parsers, pretty-printers using SXML trees as an intermediate representation, a decent C parser and an `FFI Helper' tool to help create Guile Scheme bindings for C-based libraries. It also provides (partially implemented) compilers based on these parsers to allow execution with Guile as extension languages.

NYACC is set of Guile modules for generating parsers and lexical analyzers. It provides sample parsers, pretty-printers using SXML trees as an intermediate representation, a decent C parser and an `FFI Helper' tool to help create Guile Scheme bindings for C-based libraries. It also provides (partially implemented) compilers based on these parsers to allow execution with Guile as extension languages.

NYACC is set of Guile modules for generating parsers and lexical analyzers. It provides sample parsers, pretty-printers using SXML trees as an intermediate representation, a decent C parser and an `FFI Helper' tool to help create Guile Scheme bindings for C-based libraries. It also provides (partially implemented) compilers based on these parsers to allow execution with Guile as extension languages.

Python-nbxmpp is a Python library that provides a way for Python applications to use the XMPP network. This library was initially a fork of xmpppy.

Toxic is a console-based instant messaging client, using c-toxcore and ncurses. It provides audio calls, sound and desktop notifications, and Python scripting support.

Pidgin is a modular instant messaging client that supports many popular chat protocols.

This module adds the ability to set vCard for MUC rooms. One of the most common use cases is to define avatars for MUC rooms.