Similar to OpenSSL

Tomboy (software)

Tomoyo Linux

Ubuntu Studio

Udev

Underscore.js

Uniform Office Format

Unity (user interface)

Universal Network Objects

Veusz

Virt-manager

VirtualDub

Vrms

Waifu2x

GNOME Web

Web2py

WebKit

WebM

Webmin

WebP

Wiki.js

X-CD-Roast

Xandros

Xdvi