GNU MP is a programmer's library for arbitrary precision arithmetic (ie, a bignum package). It can operate on signed integer, rational, and floating point numeric types.

This package provides a number of small utilities which are used primarily by the installation scripts of Debian packages, although you may use them directly.

This package contains an additional runtime library for C++ programs built with the GNU compiler.

NetworkManager is a system network service that manages your network devices and connections, attempting to keep active network connectivity when available. It manages ethernet, Wi-Fi, mobile broadband (WWAN), and PPPoE devices, and provides VPN integration with a variety of different VPN services.

Many mice have side or "thumb" buttons that see limited use in Linux, as well as a wheel that is not used by many older applications.