Source code, explanations, file formats, and examples of the Edgebreaker compression and decompression techniques.
http://www.gvu.gatech.edu/~jarek/edgebreaker/eb/
Gmsh is a three-dimensional finite element mesh generator, primarily Delaunay, with built-in pre- and post-processing facilities. Gmsh is freely available for Windows and most UNIX platforms.
http://www.geuz.org/gmsh/
Benchmark comparing speeds of many FFT codes. Results from many machines, and code to run it yourself.
http://www.fftw.org/benchfft
Jeff Erickson's links to freely available implementations of geometric algorithms and software.
http://compgeom.cs.uiuc.edu/~jeffe/compgeom/code.html
Ken ClarkSon's convex hulls, Delaunay triangulations, alpha shapes calculator in C
http://cm.bell-labs.com/netlib/voronoi/hull.html
Covers FFTs, Z transforms, and Hilbert transforms.
http://sepwww.stanford.edu/sep/prof/fgdp/c1/paper_html/node1.html
A real-time spectral analysis application with spectral analysis tools, statistical functions and visualization system. It can analyse data from WAV files or sound input from microphone or CD player. Shareware.
http://www.sigview.com/
Fortran 90 codes for Fast Fourier Transforms and Discrete Weighted Transforms, for use in number theory research.
http://hogranch.com/mayer/resume.html