Free to be used software for linux

Ptk Phone is a small program written in Perl/Tk to be used as an address book.

It handles email addresses and comments as well.

Wombat Linux Server is a port of Linux that runs as an application on top of L4/Iguana.

This package is not really intended to be used standalone. It is best to download it as part of the Iguana project.

SirTobis ButtonBar is a small GTK button bar.
It has few dependencies, is highly configurable, and is intended to be used for administrating remote servers.
Main features:
- tiny and fast
- show load, user and host
- command entry
- menus and submenus
- vertical or horizontal alignement
- with or withour tooltips, icons, text

openTNEF is a project focused on providing a quality TNEF decoding library.

openTNEF aims to encourage corporate involvement with its development. The use of the BSD licence has previously been shown to be effective in fostering strong development ties as seen with sister projects such as ripMIME, alterMIME and FileType.

While openTNEF can be used as a stand-alone appication, able to decode winmail.dat files, its primary purpose is to actually be developed as a library to be used in the more comprehensive MIME decoding package ripMIME. As openTNEF reaches various stages of feature and stability, it will be rolled back into the ripMIME tree to be used.

Currently, openTNEF is not at the same level of diversity and quality of other open-sourced TNEF decoding projects such as yTNEF and TNEF. We naturally wish to address this issue. openTNEF has been forked out of the existing ripMIME project in order to provide a stronger focus on its development.

TocaRaul! is a playlist manager intended to be used with icecast2, and ices2 to stream ogg vorbis files over the network.
TocaRaul! is still in a very early stage of development, but it already has the basic functions to be considered usable.
This name is a tribute to Raul Seixas. He was a Brazilian rocknroll singer who died in 1989 by a heart attack. He still has many fans. Some of these fans use to scream "Toca Raul!!!" (in english its like: "Play Raul!!!") in many rocknroll shows (and other ones too) in Brazil.
Enhancements:
- Improvements were made to the addsong script.
- An entire album can be added to the playslist.
- An entire directory can be added to the database.
- A small play history was implemented.
- Many other minors improvements were made.

BioCluster is a peer-to-peer clustering platform for Asterisk, the open source PBX, which allows Asterisk to be used as a full carrier-grade telephony solution. This project is meant to be installed on several machines together with Asterisk, turning them into a VoIP cluster.

While the BioCluster peer-to-peer protocol was initially designed to cater to Asterisk-based clustering solutions, the BioCluster framework is capable of being extended to support various forms of normally unclustered devices or software packages.

Tvheadend 2.4 brings users the convenience of a streaming server/relay which supports a variety of sources and multiple output formats.
Tvheadend is initially intended to be used for receiving TV (DVB, Analog, IPTV) and to transmit it using a number of different output formats to subscribers. Together with powerful DVR (Digital Video Recorder) features, an advanced EPG and a web-interface it can be used as a TV distribution hub in your home.