xpsk31 is a GTK+ graphical version of lpsk31, using the same basic signal decoding and encoding engine but controlled by the user via the GUI. In addition it has a FFT-derived "waterfall" display of the incoming signal and a "magniphase" display that shows the magnitude, phase and frequency error of the psk31 signal. It has similar QSO logging facilities and CAT control, for the FT847 and FT857 transceivers, which can be used to tune the transceiver to the appropriate carrier frequency by clicking on a signal trace. By default, xpsk31 wants to install a config file into the installing user's home directory. This has been redirected to /usr/share/xpsk31-$VERSION/xpsx31rc and can be installed from there into ~/xpsk31/.