Par2 files create redundant data that can be used later in case parts of the original data is lost or corrupted.

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.

NAM is a Tcl/TK based animation tool for viewing network simulation traces and real world packet traces. It supports topology layout, packet level animation, and various data inspection tools. NAM began at LBL. It has evolved substantially over the past few years. The NAM development effort was an ongoing collaboration with the VINT project. Currently, it is being developed at ISI as part of the SAMAN and Conser projects.

This is the Gtk interactive geometry software. It allows one to create geometric figure plus the interactive manipulation of such figure in respect with their geometric constraints. It is usable in teaching situation with students from primary or secondary level.