Python is a high-level, interactive, object-oriented language. Its 2.7 version includes an extensive class library with lots of goodies for network programming, system administration, sounds and graphics.

Security-enhanced Linux is a patch of the Linux® kernel and a number of utilities with enhanced security functionality designed to add mandatory access controls to Linux. The Security-enhanced Linux kernel contains new architectural components originally developed to improve the security of the Flask operating system. These architectural components provide general support for the enforcement of many kinds of mandatory access control policies, including those based on the concepts of Type Enforcement®, Role-based Access Control, and Multi-level Security.

This program can look for the definition or translation of a word in existing databases over the Internet

Crack is program designed to quickly locate vulnerabilities in Unix (or other) password files by scanning the contents of a password file, looking for users who have misguidedly chosen a weak login password.

Fityk is a flexible and portable program for nonlinear fitting of analytical functions (especially peak-shaped) to data (usually experimental data). In other words, for nonlinear peak separation and analysis.

Arduino is an open hardware microcontroller platform. This package contains the minimal set of tools to allow one to program an Arduino. It also contains examples and libraries. For a CLI, see the 'arduino-mk' package.