Fswebcam is a tiny and flexible webcam command-line program for capturing images from a V4L1/V4L2 device. It accepts a number of formats, can skip the first (possibly bad) frames before performing the actual capture, and can perform simple manipulation on the captured image, such as resizing, averaging multiple frames or overlaying a caption or an image.

xdg-utils contains utilities for integrating applications with the desktop environment, regardless of which desktop environment is used.

GTK is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK is suitable for projects ranging from small one-off tools to complete application suites.

Cloud-init provides a framework and tool to configure and customize virtual machine instances for Infrastructure-as-a-Service (IaaS) clouds platforms. It can for example set a default locale and hostname, generate SSH private host keys, install SSH public keys for logging into a default account, set up ephemeral mount points, and run user-provided scripts.

This library provides APIs to interface with various system components such as the system journal, the system service manager, D-Bus and more.

pip is the Python package installer. It integrates with virtualenv, doesn't do partial installs, can save package state for replaying, can install from non-egg sources, and can install from version control repositories.