I obviously cannot show all the X11R6 apps running under Windows
in a forum message, but here's a few examples of command line commands
on one of my Vista systems:

REGULUS bash 1/3156> grep PS1 .bashrc
PS1="\h ${BASH##*/} $PPID/$$> "

REGULUS bash 1/3156> uname -a
CYGWIN_NT-6.0 REGULUS 1.5.25(0.156/4/2) 2008-06-12 19:34 i686 Cygwin

REGULUS bash 1/3156> ls /proc/registry/
HKEY_CLASSES_ROOT/ HKEY_CURRENT_USER/ HKEY_LOCAL_MACHINE/
HKEY_USERS/
HKEY_CURRENT_CONFIG/ HKEY_DYN_DATA/ HKEY_PERFORMANCE_DATA/

REGULUS bash 1/3156> echo $PATH
/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/cygdrive/c/Windows/system32:/cygdri\
ve/c/Windows:/cygdrive/c/Windows/System3
2/Wbem:/cygdrive/c/hp/bin/Python:/usr/lib/lapack

REGULUS bash 1/3156> echo $MANPATH
/usr/local/man:/usr/share/man:/usr/man:/usr/ssl/man:/usr/share/qt3/doc/man:/usr/\
X11R6/man