wxDesigner
WxWindows dialog editor.
wxDownload Fast
Open source download manager. WxMaxima
Cross platform GUI for the computer algebra system maxima.
wxWidgets
Library for cross-platform GUI development.
wzdftpd
Portable, modular, small and efficient FTP server.
x0rfbserver
Remote control an X desktop. x11vnc
VNC server for real X displays. x2x
Sharing keyboard, mouse and clipboard between two X servers. x3270
X-Windows 3270 Emulator. Xajax
Develop asynchronous Ajax applications with PHP. XamimeLT
Email content control, policy-enforcement filtering system.
XAmple XML Editor
Java-based XML editor analyzes XML schemas generates document-specific GUIs.
XAMPP
Easy to install Apache distribution. Xarchiver
Lightweight desktop independent archive manager. X ARCHON
X ARCHON is a clone of the golden oldie ARCHON game. Xarm library
C++ wrapper of Motif, CDE, Xbae and Xmext. XawTV
A TV viewing application and a few TV utilities. X-Bc
A GUI to bc, a scientific calculator. XBlast
Bomberman-like 3D Game. XBMC
Media player and entertainment hub for digital media. XBoard
Graphical user interfaces for chess. X-Bomber
X-Bomber is a game that is meant to be similar to. XCache
Fast, stable PHP opcode cacher. xCAT
Tool kit that can be used for the deployment and administration of complex Linux clusters.