udevil (removable devices manager)

udevil is a command line Linux program which mounts and unmounts
removable devices without a password, shows device info, and monitors
device changes. It can also mount ISO files, nfs://, smb://, ftp://,
ssh:// URLs, and tmpfs/ramfs filesystems.
udevil is highly configurable, requires no daemon running, and depends
only on udev and glib. To use it, just prefix a normal mount command
with 'udevil'.

It's reccomended for proper autodetection of removable
devices to enable kernel polling. You can do it adding
this line to /etc/rc.d/rc.local (the value is in
milliseconds, higher means slower detection but lower
overhead)

echo 3000 > /sys/module/block/parameters/events_dfl_poll_msecs

zenity is an optional dependency.