National Aeronautics and Space Administration

autocor - calculates auto correlation for a time series
crosscor - calculates cross correlation of two time series
efold - creates epoch folded lightcurve, hardness and color-color plots
efsearch - finds best chi-squared period by folding over range of periods
listdata - list data file on the screen
lcmath - subtracts or adds two binned lightcurves
lcstats - calculates statistical variables a time series
lcurve - creates lightcurves, hardness and color-color plots
powspec - creates power spectrum density
timeskew - calculates time skewness function for a time series
xronwin - creates a window file suitable for xronos tasks

ascii2flc - creates a xronos input FITS file from an ASCII file
flc2ascii - dumps xronos input or output into ASCII file readable by QDP
rbf2fits - converts the "EXOSAT rate buffer" format into FITS
earth2sun - changes times to solar system barycenter