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Permanent Eraser... When you normally delete your files in Mac OS X, the operating system is only forgetting where those particular files are placed, while the data still physically remains on the drive. Beginning with Mac OS 10.3, Apple enhanced its security by introducing the Secure Empty Trash... Platforms: Mac

A small, self-contained, configurable Sudoku generator and helper. It generates Sudoku problems having unique solution, with three difficulty levels. If level is "easy" or "medium", the Sudoku pattern shows some symmetry. A "manual input" option is also available.It includes tools for analysis... Platforms: Matlab

eews is a PHP5/MySQL CMS software for all platforms where PHP is available.It has a very intuitive interface to build simple but efficient websites without knowing any programming language. Based on modules, it is extremely flexible and extensible. Platforms: PHP