Mod player which plays MTM, STM, XM, MOD, S3M, ULT, UNI and IT mods

http://mikmod.sourceforge.net/

Construct and optionally send MIME messages from command line

http://www.argon.org/~roderick/

MIME Media Types list

http://packages.qa.debian.org/m/mime-support.html

MS-DOS Telix serial communication program "workalike"

https://salsa.debian.org/minicom-team/minicom/

Zip library and programs from Zlib distribution

http://www.winimage.com/zLibDll/minizip.html

Program to create Compose cache files

Create an index of X font files in a directory

http://www.xfree86.org/current/mkfontdir.1.html

Creates an index of scalable font files for X

http://www.xfree86.org/4.3.0/mkfontscale.1.html

MirBSD enhanced shell based on pdksh

https://mirbsd.org/mksh

Shared memory allocation library for pre-forked process models

http://www.ossp.org/pkg/lib/mm/

Open source implementation of .NET Development Framework

http://www.mono-project.com/

Powerful text mode based programming IDE

http://konst.org.ua/motor/

Library and tools to read, create, and modify mp4 files

http://code.google.com/p/mp4v2/

External MIME packer/unpacker

Library of complex numbers with arbitrarily high precision

https://www.multiprecision.org/mpc/

MPEG-2 Encoder and Decoder

http://www.mpeg.org/MPEG/video/mssg-free-mpeg-software.html

Library for multiple-precision floating-point computations

https://www.mpfr.org/

Command-line player for MPEG Layer 1, 2, and 3 audio files

http://www.mpg123.de/

Skins for MPlayer's Graphical User Interface (GUI)

http://www.mplayerhq.hu/

SMTP plugin for MUAs

https://marlam.de/msmtp/

A collection of tools for manipulating MSDOS files

http://www.gnu.org/software/mtools/intro.html

Common components between a munin node and server

https://munin-monitoring.org/

Node-specific part of Munin

https://munin-monitoring.org/

Convert a MySQL dump to a PostgreSQL dump

http://pgfoundry.org/projects/mysql2pgsql/

Multithreaded SQL database (client)

http://www.mysql.com/

Multithreaded SQL database (scripts)

http://www.mysql.com/

Multithreaded SQL database (server)

http://www.mysql.com/

Multithreaded SQL database (client)

http://www.mysql.com/

Multithreaded SQL database (server)

http://www.mysql.com/

Multithreaded SQL database (client)

http://www.mysql.com/

Multithreaded SQL database (server)

http://www.mysql.com/

Nano's ANOther editor, an enhanced free Pico clone

http://www.nano-editor.org/

Small weblog engine written in Bash for the command line

http://nanoblogger.sourceforge.net/

General-purpose multi-platform x86 and amd64 assembler

https://www.nasm.us/

Brian Kernighan's pattern scanning and processing language

http://cm.bell-labs.com/cm/cs/awkbook/index.html

FTP client with advanced user interface

https://www.ncftp.com/ncftp/

Commercial FTP daemon with a 30-day evaluation license

http://www.ncftp.com/ncftpd/

Library for terminal-independent, full-screen output

https://invisible-island.net/ncurses/

HTTP and WebDAV client library for Unix systems

https://notroj.github.io/neon/

Extendable SNMP implementation

http://net-snmp.sourceforge.net/

Simple utility which reads and writes data across network connections

http://nc110.sourceforge.net/

Network benchmark

http://www.ars.de/ars/ars.nsf/docs/netio/

Toolkit for conversion of images between different formats

http://netpbm.sourceforge.net/

Network performance benchmarking package

http://www.netperf.org/

Self-scaling network benchmark

http://bitspjoule.org/netpipe/

Low-level cryptographic library

https://www.lysator.liu.se/~nisse/nettle/

Implementation of AT&T Research UNIX V8 newer(1)

Download news articles from NNTP server

Not Eriks Windowing Toolkit: console I/O handling library

https://fedorahosted.org/newt/

Robust and small WWW server

https://nginx.com/