1. Applications: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z 

X
xapm - display Advanced Power Management (APM) BIOS information
xargs - build and execute command lines from standard input
xawtv-remote - remote, v4lctl -- control video4linux devices
xawtv - a X11 program for watching TV
xbmtopbm - convert an X11 or X10 bitmap into a portable bitmap
xcam - a graphical camera frontend for SANE
ximtoppm - convert an Xim file into a portable pixmap
xmlcatalog - Command line tool to parse and manipulate XML or SGML catalog files.
xmllint - command line XML tool
xmlwf - Determines if an XML document is well-formed
xmms - an audio player for X.
xpdf - Portable Document Format (PDF) file viewer for X (version 2.01)
xpmtoppm - convert an X11 pixmap into a PPM image
xsane - scanner frontend for SANE
xsltproc - command line xslt processor
xsubpp - compiler to convert Perl XS code into C code
xvminitoppm - convert a XV "thumbnail" picture to PPM
xwdtopnm - convert a X11 or X10 window dump file into a portable anymap
xxd