General-purpose multi-platform x86 and x86-64 assembler

http://www.nasm.us/

Nauty & Traces are programs for computing graph automorphism

https://pallini.di.uniroma1.it/

Brian Kernighan's pattern scanning and processing language

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

17 text-based modern games

https://github.com/abakh/nbsdgames

NCurses Disk Usage (LTS version written in C)

https://dev.yorhel.nl/ncdu https://code.blicky.net/yorhel/ncdu

Fast and modern Gopher, Gemini and finger terminal client

https://github.com/jansc/ncgopher

Library for terminal-independent, full-screen output

http://invisible-island.net/ncurses/ncurses.html

Scalable overlay networking tool

https://github.com/slackhq/nebula

Fast, highly customizable system info script

https://github.com/dylanaraps/neofetch

HTTP and WebDAV client library for Unix systems

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

Neovim client library and QT6 GUI

https://github.com/equalsraf/neovim-qt/

Developer-targeted fonts with a high number of glyphs

https://nerdfonts.com/

Symbols Nerd Font

https://www.nerdfonts.com

Free open source daemon for Internet Relay Chat (IRC)

http://ngircd.barton.de/

Ninja is a small build system closest in spirit to Make

https://ninja-build.org/

JSON library for Modern C++

https://nlohmann.github.io/json/

Nonlinear optimization library

https://nlopt.readthedocs.io/ https://github.com/stevengj/nlopt/

Lightweight, broker-less messaging

https://nanomsg.github.io/nng/

V8 JavaScript for client and server

https://nodejs.org/ https://github.com/nodejs/node

V8 JavaScript for client and server

https://nodejs.org/ https://github.com/nodejs/node

V8 JavaScript for client and server

https://nodejs.org/ https://github.com/nodejs/node

V8 JavaScript for client and server

https://nodejs.org/ https://github.com/nodejs/node

V8 JavaScript for client and server

https://nodejs.org/ https://github.com/nodejs/node

Prometheus exporter for machine metrics

https://github.com/prometheus/node_exporter

More functional native binary replacement for /sbin/nologin

Google Noto Fonts family (meta port)

https://www.google.com/get/noto/

Google Noto Fonts family (Basic)

https://www.google.com/get/noto/

Google Noto Fonts family (Emoji)

https://fonts.google.com/noto https://github.com/googlefonts/noto-emoji

Google Noto Fonts family (Extra)

https://www.google.com/get/noto/

Google Noto Fonts family (Traditional Chinese Hong Kong)

https://www.google.com/get/noto/

Google Noto Fonts family (Japanese)

https://www.google.com/get/noto/

Google Noto Fonts family (Korean)

https://www.google.com/get/noto/

Google Noto Fonts family (Simplified Chinese)

https://www.google.com/get/noto/

Google Noto Fonts family (Traditional Chinese)

https://www.google.com/get/noto/

Node package manager

http://npmjs.org/

Platform-neutral API for system level and libc like functions

http://www.mozilla.org/projects/nspr/index.html

Libraries to support development of security-enabled applications

http://www.mozilla.org/projects/security/pki/nss/

NTFS-3G plugin for reading XPRESS or LZX compressed files

https://github.com/ebiggers/ntfs-3g-system-compression

NTFS to Btrfs in-place conversion utility

https://github.com/maharmstone/ntfs2btrfs

Fast vulnerability scanner

https://github.com/projectdiscovery/nuclei

Tool to manipulate X configuration files for the NVidia driver

http://www.nvidia.com/object/unix.html

Standalone converter for the OpenOffice.org writer and scalc formats

http://siag.nu/o3read/

Simple and portable single file AV1 OBU parser

https://github.com/dwbuiten/obuparse

OpenCL Installable Client Driver

https://github.com/OCL-dev/ocl-icd

Customized version of the Source Code Pro font

https://github.com/nathco/Office-Code-Pro

Library that provides thread building blocks

https://software.intel.com/oneapi/onetbb

A BSDL Regular Expressions library compatible with POSIX/GNU/Perl

http://www.geocities.jp/kosako3/oniguruma/

Open Neural Network eXchange

https://onnx.ai https://github.com/onnx/onnx

Clean and modern sans-serif typeface

https://www.opensans.com

Software implementation of the OpenAL specification

http://kcat.strangesoft.net/openal.html