Calligra Suite is a set of applications written to help you to accomplish your work. It includes office applications such as a word processor, a spreadsheet, a presentation program, a database application, etc., and raster and vector graphics tools.

KDE is produced by an international technology team that creates free and open source software for desktop and portable computing. Among KDE's products are a modern desktop system for Linux and UNIX platforms, comprehensive office productivity and groupware suites and hundreds of software titles in many categories including Internet and web applications, multimedia, entertainment, educational, graphics and software development.

Brp-pacu compares the output of the system to the input of the system and allows you to use this data to perform final equalization by matching the results with actual DSP/EQ.

Viewmol is able to graphically aid in the generation of molecular structures for computations and to visualize their results.

Pure Data (also known as Pd) is a real-time graphical programming environment for audio and graphics processing.