Non-graphical, text-based World-Wide Web client

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

Lossless data compressor based on the LZMA algorithm

http://www.nongnu.org/lzip/

Portable speedy, lossless data compression library

http://www.oberhumer.com/opensource/lzo/

Fast file compressor similar to gzip, using the LZO library

http://www.oberhumer.com/opensource/lzop/

GNU M4

https://www.gnu.org/software/m4/m4.html

Bonjour (zero-configuration networking) by Apple

https://developer.apple.com/bonjour/

Apple mDNS responder - BSD nsswitch module

https://developer.apple.com/bonjour/

Dependency generator for makefiles

https://www.x.org/archive/X11R7.5/doc/man/man1/makedepend.1.html

Perl scripts to assist in the generation and application of patches

https://www.vromans.org/johan/software/sw_makepatch.html

Convert man pages to HTML

http://man2web.sourceforge.net/

Wrapper script for the various installations of Maven

Implementation of new/posix awk

http://invisible-island.net/mawk

Motherboard monitor for LM78/79, W8378x, AS99127F, VT82C686 and ADM9240

http://www.nt.phys.kyushu-u.ac.jp/shimizu/download/download.html

Converts CSV to MobileDB database

http://www.handmark.com/products/mobiledbtools/index.html

Alcohol 120% to ISO converter

https://BSDforge.com/projects/sysutils/mdf2iso/

Advertise a service via Rendezvous

https://github.com/Pro/mdnsd/

The wiki engine used by Wikipedia

http://www.mediawiki.org/

High-performance distributed memory object cache system

https://memcached.org/

Utility to test for faulty memory subsystem

http://pyropus.ca/software/memtester/

Small, fast Emacs-like editor

https://github.com/ibara/mg

Easy-to-use library for strong hashes such as MD5 and SHA1

http://mhash.sourceforge.net/

MidnightBSD desktop environment

http://people.midnightbsd.org/~laffer1

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/

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/

Drive a buggy across the moons surface

http://www.seehuhn.de/comp/moon-buggy

PostScript printing util for ASCII files, email, USENET news articles, etc

External MIME packer/unpacker

Library of complex numbers with arbitrarily high precision

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

Library for multiple-precision floating-point computations

https://www.mpfr.org/

Skins for MPlayer's Graphical User Interface (GUI)

http://www.mplayerhq.hu/

SMTP plugin for MUAs

https://marlam.de/msmtp/

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 (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

Library for terminal-independent, full-screen output

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

HTTP and WebDAV client library for Unix systems

http://www.webdav.org/neon/

Extendable SNMP implementation

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

Simple utility which reads and writes data across network connections

http://nc110.sourceforge.net/

Network performance benchmarking package

http://www.netperf.org/