x11
Zenity
Display GNOME dialogs from the command line
Yelp
A help browser for the GNOME 2 desktop
Yeahconsole
quake console-like extension for X terminals
Yalias
An enhanced execution box with regex pattern matching
Yakuake-kde4
Drop-down terminal emulator for KDE
Yakuake
Quake-style terminal emulator based on KDE's Konsole
Xzoom
Magnify, rotate, mirror the image on the X screen
Xxkb
XKB keyboard layout indicator and switcher
Xwud
Image displayer for X
Xwit
X interface tool
