PyWavelets is a Python module for calculating Simple and Inverse Discrete Wavelet Transform, as well as Wavelet Packets and Stationary Wavelet Transform.
rdiff-backup backs up one directory to another, possibly over a network. The target directory ends up a copy of the source directory, but extra reverse diffs are stored in a special subdirectory of that target directory, so you can still recover files los
A. Rigo, und S. Pedroni. OOPSLA'06: Companion to the 21st ACM SIGPLAN conference on Object-oriented programming systems, languages, and applications, Seite 944--953. ACM, (2006)