RestrictedFormats/PlayingDVDs. Applications. Applications Guides These guides provide information about various applications that are available for Ubuntu, both from repositories and from other sources.
Accessories – Various useful utilities. Repositories/Ubuntu. There are literally thousands of Ubuntu programs available to meet the needs of Ubuntu users.
Many of these programs are stored in software archives commonly referred to as repositories. Repositories make it easy to install new software, while also providing a high level of security, since the software is thoroughly tested and built specifically for each version of Ubuntu. Ubuntu distinguishes between software that is "free" and software that is not free.
SynapticHowto. Synaptic is a graphical front-end to apt, the package management system in Ubuntu.
It combines the point-and-click simplicity of the graphical user interface with the power of the apt-get command line tool. You can install, remove, configure, or upgrade software packages, browse, sort and search the list of available software packages, manage repositories, or upgrade the whole system. You can queue up a number of actions before you execute them. Synaptic will inform you about dependencies (additional packages required by the software package you have chosen) as well as conflicts with other packages that are already installed on your system.