Benchmarking tool for analysing TCP and UDP performance

https://codeberg.org/BSDforge/ttcp/

Color emoji font using Twitter Unicode 10

https://github.com/eosrei/twemoji-color-font

Ubuntu font family

https://design.ubuntu.com/font/

Universal charset detection library

https://www.freedesktop.org/wiki/Software/uchardet/

Lightweight UDP torrent tracker

https://github.com/troydm/udpt

FUSE driver for FreeBSD's UFSv2

https://github.com/realchonk/fuse-ufs

Fast copy utility for UFS filesystem

http://people.freebsd.org/~simokawa/ufs/

Universal Hardware Data Model

https://github.com/chipsalliance/UHDM

High performance peer-to-peer hub for the ADC network

https://www.uhub.org/

Prometheus metrics exporter for the Unbound DNS resolver

https://github.com/letsencrypt/unbound_exporter

Terminfo parsing library

https://github.com/neovim/unibilium

FUSE based implementation of the well-known unionfs

https://github.com/rpodgorny/unionfs-fuse

BYTE magazine's Public Domain benchmark for UNIX

https://github.com/kdlucas/byte-unixbench

Extract, view & test RAR archives

http://www.rarsoft.com/

Unreal - the next generation ircd

https://www.unrealircd.org/

FUSE-based fault injection filesystem

https://github.com/ligurio/unreliablefs

Network performance tool to model and replay of networking patterns

https://uperf.org/

Universal Plug and Play Software Development Kit

http://pupnp.sourceforge.net/

URI parsing library

http://uriparser.sourceforge.net/

URW core35 fonts in various formats

https://www.ghostscript.com

USB HID device dumping utility

https://github.com/DIGImend/usbhid-dump

Database of all known IDs used in USB devices

http://www.linux-usb.org/

Daemon for multiplexing connections over USB to iPhone/iPod Touch

http://www.libimobiledevice.org

Utility for listing USB devices

https://github.com/gregkh/usbutils

Simple, portable, lightweight library for handling UTF-8 strings

https://github.com/nemtrif/utfcpp

UTF-8 processing library

https://juliastrings.github.io/utf8proc/

hash table for C structures

http://uthash.sourceforge.net/

Kernel driver for absolute USB HID mice

https://github.com/wulf7/utouch

Monospaced bitmap fonts for X11

https://people.mpi-inf.mpg.de/~uwe/misc/uw-ttyp0/

V Programming Language

https://vlang.io/ https://github.com/vlang/v

Video4Linux utilities

https://linuxtv.org/wiki/index.php/V4l-utils

Video4Linux IOCTL header files

https://linuxtv.org

Memory debugging and profiling tool

https://bitbucket.org/stass/valgrind-freebsd/overview

Markup Validation Service from the World Wide Web Consortium (W3C)

http://validator.w3.org/

Vamp audio analysis plugin SDK

https://www.vamp-plugins.org/

Simple Persian/Arabic font

https://rastikerdar.github.io/vazirmatn/

Library for manipulation of triangle meshes

https://github.com/cnr-isti-vclab/vcglib

Virtual Ethernet Interface

https://github.com/hmatyschok/if_vether

Programming font with cursive italics and ligatures

https://rubjo.github.io/victor-mono/

Video stabilization library

http://public.hronopik.de/vid.stab/

Web-based Version Control Repository Browsing

https://www.viewvc.org/

Improved version of the vi editor

http://www.vim.org/

VirtualBox additions for FreeBSD guests

https://www.virtualbox.org/

VirtualBox kernel module

http://www.virtualbox.org/

VirtualBox kernel module for FreeBSD

https://www.virtualbox.org/

Redirects commands from an OpenGL app to another X server

https://www.virtualgl.org

Management system for bhyve virtual machines

https://github.com/churchers/vm-bhyve

Zsh completion for vm-bhyve

https://github.com/metalefty/vm-bhyve-zcomp

Connect virtual machines to the tor network

https://github.com/yurivict/vm-to-tor

Perceptual video quality assessment based on multi-method fusion

https://github.com/Netflix/vmaf