Kazam the app for your linux system, make screen recordings!

kazam

screencast and screenshot application created with design in mind

Kazam provides a well designed and easy to use interface for capturing screencasts and screenshots. It can record desktop video and multiple audio streams simultaneously with control over audio levels and the screen region being captured.
classic gothic/horror-themed first person shooter

quake

classic gothic/horror-themed first person shooter

Quake is a classic first-person shooter game by id Software, released in 1996. This package contains a launcher script and menu entry to play Quake with any suitable engine.
manage the repositories that you install software from (gtk)

software-properties-gtk

manage the repositories that you install software from (gtk)

This software provides an abstraction of the used apt repositories. It allows you to easily manage your distribution and independent software vendor software sources.
Password manager

keepass2

Password manager

KeePass is a easy-to-use password manager for Windows, Linux, Mac OS X and mobile devices. You can store your passwords in highly-encrypted databases, which can only be unlocked with one master password and/or a key file. A database consists of only one file that can be transferred from one computer to another easily. KeePass can import data from various file formats. The password list can be exported to various formats, including TXT, HTML, XML and CSV files.
Preferences dialog of Arduino.

arduino

AVR development board IDE from Arduino CC

Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments.
terminal-based package manager

aptitude

terminal-based package manager

aptitude is a package manager with a number of useful features, including: a mutt-like syntax for matching packages in a flexible manner, dselect-like persistence of user actions, the ability to retrieve and display the Debian changelog of most packages, and a command-line mode similar to that of apt-get.