There are 8 other file types using
the X file extension!
.x - Alysis SuperDisk self-extracting archive
.x - Lex language source code
.x - Microsoft Direct-X SDK 3D graphics
.x - Stardent AVS X bitmap image file
.x - Chemical modeller output file
.x - XBLite program file
.x - X11 server import image
.x - Human68k operating system executable file
X file extension - Xview object file
What is x file? How to open x files?
File type specification:
The X file extension is associated with XView, a widget toolkit from Sun Microsystems introduced in 1988. It provides an OPEN LOOK user interface for X Window System applications, with an object-oriented application programming interface (API) for the C programming language. Its interface, controls, and layouts are very close to that of the earlier SunView window system, making it easy to convert existing applications from SunView to X. Sun also produced the User Interface Toolkit (UIT), a C++ API to XView.
The XView source code has been freely available since the early 1990s, making it the "first open-source professional-quality X Window System toolkit". XView was later abandoned by Sun in favor of Motif (the basis of CDE), and more recently GTK+ (the basis of GNOME).
XView was reputedly the first system to use right-button context menus, which are now ubiquitous among computer user interfaces. However, the claim to that first may in fact lie with Acorn Computers' Arthur operating system, which was released in 1987, though it used the middle mouse button rather than the right.
The .x files contain object data used by XView.