YATE is a telephony engine aimed at creating a telephony server that performs well enough to deal with PBX requirements and also flexible enough for complex Gateway and IVR solutions.

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

Osmium Tool is a multipurpose command line tool based on the Osmium library.

TwoLAME is an optimized MPEG Audio Layer 2 encoder. It is based on tooLAME by Mike Cheng, which in turn is based upon the ISO dist10 code and portions of LAME.

DocBook is an XML document type definition (DTD). That is, it contains the "DocBook" document structure. This is used by authors or editors writing documents in the DocBook XML format. DocBook was designed for books, articles, or reference documentation about technical matters or software. It has emerged as an open, standard DTD in the software industry, and is the documentation system of choice for many free software projects.

A collection of official plug-ins and applets for cairo-dock.