Prosody is a modern XMPP communication server. It aims to be easy to set up and configure, and efficient with system resources. Additionally, for developers it aims to be easy to extend and give a flexible system on which to rapidly develop added functionality, or prototype new protocols.

A collection of cryptographic algorithms and protocols, implemented for use from Python. Among the contents of the package:

Prey is a lightweight program to help track and recover a stolen laptop.

The strongSwan VPN suite uses the native IPsec stack in the standard Linux kernel. It supports both the IKEv1 and IKEv2 protocols.

gimp-dds is a plugin for GIMP that lets you manipulate Microsoft DirectDraw surfaces. These kind of files are widely used in 3D games for textures and the like.