Wavesurfer is a sound manipulation program, it has been designed to suit both novice and advanced users. WaveSurfer has a simple and logical user interface that provides functionality in an intuitive way and which can be adapted to different tasks.

Cadabra is a computer algebra system designed specifically for the solution of problems encountered in field theory. It has extensive functionality for tensor polynomial simplification including multi-term symmetries, fermions and anti-commuting variables, Clifford algebras and Fierz transformations, implicit coordinate dependence, multiple index types and many more. The input format is a subset of TeX.

Ruby is the interpreted scripting language for quick and easy object-oriented programming. It has many features to process text files and to do system management tasks (as in perl). It is simple, straight-forward, and extensible.

Kbackup is a program that lets you back up any directories or files. It uses an easy to use directory tree to select the things to back up and lets you save your settings in "profile" files. These are simple textfiles containing definitions for directories and files to be included or excluded from the backup process.

plasmoid to control the amule application and helper apps and mimetype for handling emulecollections