GLU offers simple interfaces for building mipmaps; checking for the presence of extensions in the OpenGL (or other libraries which follow the same conventions for advertising extensions); drawing piecewise-linear curves, NURBS, quadrics and other primitives (including, but not limited to, teapots); tesselating surfaces; setting up projection matrices and unprojecting screen coordinates to world coordinates.

D-Bus is a message bus, used for sending messages between applications. Conceptually, it fits somewhere in between raw sockets and CORBA in terms of complexity.

This package provides a machine-readable database of legal regulations on radio emissions that affect use of wireless networking. The Linux kernel and drivers use this to maintain compliance with those regulations.

Android images (.img) are typically ext4 filesystems in a special sparse file format. These are tools to help make that format.

CUPS filter driver supporting (some) Brother laser printer.

This package contains tools to manage Debian based Xen virtual servers.