Xd3d is a package for advanced 2D and 3D visualization. It is mainly aimed for applications in science and engineering and supports various input formats.

Xfig is a graphics program that allows a fast creation of technical and scientific figures. Exporters for various formats guarantee a painless integration with other software, e.g. LaTeX.

gPhoto2 is a collection of software packages providing an interface to digital cameras with support for more than 800 models. Images can be retrieved by using an easy-to-use GUI application, a command-line tool or mounting the camera as a file system.