OpenOSX: GrassPro: GMT

filter1d	Time domain filtering of 1-D time series, a general time domain filter for multiple column time series data. The user specifies the number of columns of input and which column is the time.
grdfilter	Filter 2-D .grd data sets in the time domain using one of the selected convolution or non-convolution filters and compute distances using Cartesian or Spherical geometries.
gmtmath	Perform over 100 math operations including add, multiply, SIN, LOG, TAN, etc. on one or more table data files or constants using Reverse Polish Notation (RPN) syntax (e.g., Hewlett-Packard calculator-style). Arbitrarily complicated expressions may therefore be evaluated with the final result output to a file or the Terminal.
blockmode	Filter to block average/decimate (x,y,z) data by mode estimation
pswiggle	Draw table data time-series along track on maps; it plots z as a function of distance along a track.
fitcircle	Finds the mean position and pole of the best fit great or small circle to points on a sphere
grdfft	Perform mathematical operations on gridded files in the frequency domain. grdfft will take the 2-D forward Fast Fourier Transform and perform one or more mathematical operations in the frequency domain before transforming back to the space domain. An option is provided to scale the data before writing the new values.