Free what is social networking software for linux

SocNetV is a Linux GUI program written in Qt3.
Social Networks Visualiser project main purpose is to bring to our Linux box comprehensive Social Networks Analysis and Visualisation.
It can read and write various network file formats and enables the user to visually modify an existing network or draw a new network using the mouse. Network and actor properties, such as distances, centralities, diameter etc, can be easily computed. Also, it can create random networks (lattice, same degree, etc).
SocNetV is NOT antagonistic to any commercial/scientific SNA programs, like PAJEK, visone, UCINET, AISee, KrackPlot, which are developed by groups of professionals and scientists. It is rather a personal trip to learn SNA and C++ programming while keeping the code open for others to learn from my mistakes. If you find it useful Ill be glad. But be aware that there is no warranty of efficiency, correctness or usability.
Oh, and this site is under never-ending construction as well.
Installation:
To see SocNetV in action, you need a modern Linux distro with Qt 3.x. Download the latest release from the link "Download" on the left. Untar the archive, cd to the new directory, and use:
/usr/lib/qt3/bin/qmake (or wherever are your Qt libs)
make
./socnetv
Enhancements:
- tarball of v. 043.1 was corrupted. fixed.
- Fixed display of HTML help in Debian package.
- Fixed wrong numbering of new actors with double-click.
- Fixed creation of links through middle-click.

Ruby Iptables NEtwork Displayer project draws an SVG from a Linux IP table generated by "iptables-save".

The Torque Network Library project is a robust, secure, and easy-to-use cross-platform C++ networking API designed for high performance simulations and games.
It features a UDP- based connection architecture with DoS prevention functionality, different types of data guarantee, bit stream compression, server object replication and updating, and a simple, highly space efficient RPC mechanism.
It includes a deterministic application journaling replay function for eliminating hard to find networking bugs.
Main features:
- Portable
- Powerful RPC Support
- Lightweight and efficient - not intended to be a replacement for CORBA.
- Extremely easy to use - two simple macro definitions and youre done.
- No complex wrapper classes to work with - write and call your functions as you normally would, and TNL will take care of the rest.
- Robust UDP-based notification protocol
- Supports fixed or adaptive rate data transfer.
- Arbitrary sized packet window.
- Robust connection handshaking.
- Handles packet loss/out of order delivery.
- Networked Objects
- Instantiation of objects by name or ID.
- IDs are assigned to NetGroups, so that only objects relevant to a connection can be references.
- Event Support
- Unguaranteed, guaranteed unordered, or guaranteed ordered event delivery.
- Notification to the event when it has been received or dropped by a client.
- Ghost Support
- Most-recent state information is transmitted to clienst.
- Scoping of objects to only those clients for which they are relevant - this helps prevent cheating or data sniffing and makes dramatically more effective use of available bandwidth.
- Prioritization of state updates by arbitrary criteria, such as relative velocity, team, ownership, etc.
- Extensible Protocol Architecture
- Easy to extend the protocol, for instance, to transmit player move information with every packet, or add voice support.
- See Torque for examples of additional capabilities that could be added to the protocol.

My Network Catalog is an indexing engine that allows Windows shares (or Samba shares) to be bound together over a local network.

My Network Catalog allows an easy centralized search of all the files available over the network.

Matrix Public Net spreads short voice messages through a web of trust; credibility decays until a threshold where the message is dropped.

Matrix Public Net comes with a program for recording and sending messages as well as plugins for XMMS and WinAmp that play received messages.

Extending the Blogosphere

This is a proposal for the extension of the Blogosphere, the network of Weblogs.
Individual Blogs are connected by their users implicitly: a community emerges, because users regularly read and comment on others entries. By making this connexions explicit, a web of trust is created which functions like a reputation mechanism.

The resulting system leverages the advantages of social networks for the distribution of news. It can be implemented as a decentralised system, with a simple extension to the Blogosphere.

The system is explained in a paper and in the presentation at the Mobile Entertainment conference in Manchester.

The RSS MPN-Interest module is the first part of this extension.