Igor Pro

A visualization for scientific analysis and visualization of large datasets, especially time series or other evenly-spaced data.
Features an OpenGL-based 3D visualization tool, Gizmo, which combines high-level data-oriented objects (surfaces, iso-surfaces, voxelgrams, paths, ribbons, etc) with OpenGL objects (line, quad, trianel, box, etc) and operations for lighting, shading, blending, etc.
Functions range from FFT and Wavelet operations, to data smoothing and (constrained) curve fitting, from differentiation and integration, to clustering and image processing.

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