Letter: X
- x3270-3.3.4p7-3.ML5.4: An X Window System based IBM 3278/3279 terminal emulator
- x3270-text-3.3.4p7-3.ML5.4: IBM 3278/3279 terminal emulator for text mode
- x3270-x11-3.3.4p7-3.ML5.4: IBM 3278/3279 terminal emulator for the X Window System
- xchat-2.6.6-8.ML5: A popular and easy to use graphical IRC (chat) client
- xorg-x11-drv-keyboard-1.1.0-3: Xorg X11 keyboard input driver
- xorg-x11-server-1.1.1-48.26.ML5.5: X.Org X11 X server
- xorg-x11-server-Xdmx-1.1.1-48.26.ML5.5: Distributed Multihead X Server and utilities
- xorg-x11-server-Xephyr-1.1.1-48.26.ML5.5: A nested server.
- xorg-x11-server-Xnest-1.1.1-48.26.ML5.5: A nested server.
- xorg-x11-server-Xorg-1.1.1-48.26.ML5.5: Xorg X server
- xorg-x11-server-Xvfb-1.1.1-48.26.ML5.5: A X Windows System virtual framebuffer X server.
- xorg-x11-server-sdk-1.1.1-48.26.ML5.5: SDK for X server driver module development