Free visually 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.

KDirStat is a graphical disk usage utility, very much like the Unix "du" command.
KDirStat project displays a directory tree both in classical tree format (like Konqueror, but with accumulated tree sizes, shown as MB / GB and as percentage bars) and in "treemap" format like SequoiaView.
In addition to that, KDirStat provides cleanup facilities to reclaim disk space - both predefined and customizable.
Main features:
Display Features
- Graphical and numeric display of used disk space
- Files kept apart from directories in separate items to prevent cluttering the display
- All numbers displayed human readable - e.g., 34.4 MB instead of 36116381 Bytes
- Different colors in the directory tree display to keep the different tree levels visually apart
- Display of latest change time within an entire directory tree - you can easily see what object was changed last and when.
Treemap Display
- Treemap as alternate (auxiliary) view of a directory tree
- Easily find large in a directory tree: You see the entire tree at once. Large rectangles are large files - you can see them even if they are hidden somewhere deep within the tree.
- Treemap view slaved to the tree (list) view: Click on a file in the treemap, and it is selected in the tree view - and vice versa.
- Treemap tiles are colored by file type - all images in cyan, all audio tracks (MP3 etc.) in yellow, executables in magenta etc.; you can see from the color what a treemap rectangle is.
- Many treemap variants available:
- Plain treemap
- Squarified treemap (no thin elongated rectangles)
- Cushion treemap
- Colored treemap
- All combinations of the above
- Fast implementation: Treemap built in fractions of a second (on quite ordinary machines: Athlon-550 class)
- Treemap subwindow can be resized as the user prefers
- Treemap can be switched off with a single keypress (F9)
- Context menu with cleanup actions etc.
- Zoom the treemap in/out treemap with double click (left/right)
- Many treemap configuration options
Directory Reading
- Stays on one file system by default - reads mounted file systems only on request.
- You dont care about a mounted /usr file system if the root file system is full and you need to find out why in a hurry, nor do you want to scan everybodys home directory on the NFS server when your local disk is full.
- Network transparency: Scan FTP or Samba directories - or whatever else protocols KDE support.
- PacMan animation while directories are being read. OK, this is not exactly essential, but its fun.
Cleaning up
- Predefined cleanup actions: Easily delete a file or a directory tree, move it to the KDE trash bin, compress it to a .tar.bz2 archive or simply open a shell or a Konqueror window there.
- User-defined cleanup actions: Add your own cleanup commands or edit the existing ones.
- "Send mail to owner" report facility: Send a mail requesting the owner of a large directory tree to please clean up unused files.
Misc
- Feedback mail facility: Rate the program and tell the authors your opinion about it.
Whats New in 2.4.4 Release:
- Sparse files and hard links are now properly supported.
Whats New in 2.5.2 Release:
- Can now read and write directory contents from cache files generated by (supplied) Perl script, e.g. in cron job over night

AnalyticMath is a FREE, cross-platform (Windows, Linux, etc.) mathematics / plotting program with a powerful editor and integrated auto-calc features that will help you develop and visually analyse mathematical expressions quickly and easily.

The program is intuitive, simple to use, and suitable for everyone from students to theoretical physicists.

This new release has many refinements over ver. 1.0 as well as some minor bug fixes.

Oralux project hopes to facilitate access to GNU/Linux for the visually impaired.
Firstly, through lowering the barrier by facilitating installation of the necessary software.
At the moment, the current version offers an experienced user a quick way to have GNU/Linux working on a PC.
The Oralux project must go further.
We hope to help and guide the newbie to reach the following initial stages:
- starting with Emacspeak or Yasr
- finding relevant documentation and browsing it,
- receiving and sending emails,
- browsing the web,
- and whatever else might be important to you...
You may want to help us to reach these aims by sharing your skills: advising and giving feedback, supplying configuration files, translating documentation, writing a tutorial and developing the Oralux scripts (shell and php).
Oralux is a Knoppix customization, the self-installing distro created by Klaus Knopper. Knoppix includes, on a single CD, nearly three compressed CDs.
Oralux boots up from the CD, whatever the already installed operating system (Win98, XP,...) may be.
Oralux includes, thanks to BRLTTY, a number of braille drivers.
The Oralux user interface is based on Emacspeak the Audio Desktop created by T. V. Raman. Emacspeak offers a complete and powerful desktop.
Another environment is available based on Yasr, the lightweight and portable screen reader by Mike Gorse.
The CD includes a free English Text-To-Speech software (TTS): Flite (Carnegie Mellon University).
It also includes EFM from Pierre Lorenzon for French and English. EFM is based on Festival (University of Edinburgh) and MBROLA (Thierry Dutoit, Universite de Mons).
Using Festival and MBROLA, implementing other languages might be possible: contributors are welcome!
ParleMax is a speech server in French based on LLiaphon and MBROLA. ParleMax and LLiaphon come from the Biglux team.
Multispeech is a speech server based for Russian on Ru_tts and for the English on freephone and MBROLA. Multispeech can automatically switch from one synthesis to the other. Igor B. Poretsky is the Multispeech and Ru_tts author.
Oralux can install the DECtalk software synthesizer (4.61 or 5.0), a multi language TTS from the Fonix company. This TTS allows Oralux to access the following languages: English or Castillan Spanish, French or German.
Enhancements:
- Major feature enhancements

Quanta Plus is a highly stable and feature rich web development environment. Quantas vision has always been to start with the best architectural foundations, design for efficient and natural use and enable maximal user extensibility.

We recognize that we dont have the resources to do everything we would like to so our target is to make it easy for you to help make this the best community based desktop application anywhere. Pretty much everything in Quanta is designed so you can extend it.

Even the way it handles XML DTDs is based on XML files you can edit. You can even import DTDs, write scripts to manage editor contents, visually create dialogs for your scripts and assign script actions to nearly any file operation in a project. You can even look at and communicate with a wide range of what happens inside Quanta using DCOP.

Quanta is based on KDE so this means it is network transparent from any dialog or project. It can use not only FTP but other KDE KIO slaves from file dialogs or in project settings. For instance if you want secure access try the fish KIO slave that uses SSH.

Just enter fish://[user]@domain in any dialog or select fish in your project settings. Here on this site you will find information on using Kommander to visually build dialogs you can extend Quanta with. These applications talk to each other using an IPC (Inter Process Communication) called DCOP (DEsktop Communication Protocol).

Of course I realize this can sound like alphabet soup techno-babble to some web developers, but heres what it means. When you are using Quanta and realize you would like to do something and you want to ask "Can I do this?" you can expect the answer will not only be yes, but it will probably be even cooler than you hoped for.

Not included on this site are other tools you can use with Quanta for revision control and reviewing and merging changes in files. Those applications are Cervisia and Kompare, and if they are not installed and you install them Quanta will use them.

We would like to think that there are rich rewards to be found here for those willing to explore new ways of doing things, or perhaps in some cases old ways that are just new to you.

Tree::Binary is a Object Oriented Binary Tree for Perl.

SYNOPSIS

use Tree::Binary;

# a tree representaion of the expression:
# ((2 + 2) * (4 + 5))
my $btree = Tree::Binary->new("*")
->setLeft(
Tree::Binary->new("+")
->setLeft(Tree::Binary->new("2"))
->setRight(Tree::Binary->new("2"))
)
->setRight(
Tree::Binary->new("+")
->setLeft(Tree::Binary->new("4"))
->setRight(Tree::Binary->new("5"))
);
# Or shown visually:
# +---(*)---+
# | |
# +-(+)-+ +-(+)-+
# | | | |
# (2) (2) (4) (5)

# get a InOrder visitor
my $visitor = Tree::Binary::Visitor::InOrderTraversal->new();
$btree->accept($visitor);

# print the expression in infix order
print $visitor->getAccumulation(); # prints "2 + 2 * 4 + 5"

# get a PreOrder visitor
my $visitor = Tree::Binary::Visitor::PreOrderTraversal->new();
$btree->accept($visitor);

# print the expression in prefix order
print $visitor->getAccumulation(); # prints "* + 2 2 + 4 5"

# get a PostOrder visitor
my $visitor = Tree::Binary::Visitor::PostOrderTraversal->new();
$btree->accept($visitor);

# print the expression in postfix order
print $visitor->getAccumulation(); # prints "2 2 + 4 5 + *"

# get a Breadth First visitor
my $visitor = Tree::Binary::Visitor::BreadthFirstTraversal->new();
$btree->accept($visitor);

# print the expression in breadth first order
print $visitor->getAccumulation(); # prints "* + + 2 2 4 5"

# be sure to clean up all circular references
$btree->DESTROY();

This module is a fully object oriented implementation of a binary tree. Binary trees are a specialized type of tree which has only two possible branches, a left branch and a right branch. While it is possible to use an n-ary tree, like Tree::Simple, to fill most of your binary tree needs, a true binary tree object is just easier to mantain and use.

Binary Tree objects are especially useful (to me anyway) when building parse trees of things like mathematical or boolean expressions. They can also be used in games for such things as descisions trees. Binary trees are a well studied data structure and there is a wealth of information on the web about them.

This module uses exceptions and a minimal Design By Contract style. All method arguments are required unless specified in the documentation, if a required argument is not defined an exception will usually be thrown. Many arguments are also required to be of a specific type, for instance the $tree argument to both the setLeft and setRight methods, must be a Tree::Binary object or an object derived from Tree::Binary, otherwise an exception is thrown. This may seems harsh to some, but this allows me to have the confidence that my code works as I intend, and for you to enjoy the same level of confidence when using this module. Note however that this module does not use any Exception or Error module, the exceptions are just strings thrown with die.

This object uses a number of methods copied from another module of mine, Tree::Simple. Users of that module will find many similar methods and behaviors. However, it did not make sense for Tree::Binary to be derived from Tree::Simple, as there are a number of methods in Tree::Simple that just wouldnt make sense in Tree::Binary. So, while I normally do not approve of cut-and-paste code reuse, it was what made the most sense in this case.

Tvark is a network monitoring tool (sniffer) with a GUI front-end, and is tied to a MySQL database. Tvark is necessarily resource-intensive. It is a multithreaded, database utility for recording network traffic. As a consequence, it uses 100% of the CPU simply because of context-switching and packet handling. Additionally, using the database with Tvark on a high traffic network will generate a great deal of stored data quite rapidly, hence filtering options.
The database is set to record traffic based on the filtering options selected in the GUI. This will change in a future release so that database population will have its own filtering options without having to run the GUI.
What we are looking to provide is a forensic tool that meets two needs. First, an admin should be able to get a feel for traffic on the network by running the GUI, and be able to determine traffic of interest quickly and visually. Second, a simple database of traffic information allows us, and anyone else, to build forensic modules that display traffic information in a customized (and thereby useful) way.
Enhancements:
- Rename MIN/MAX to avoid name conflicts.
- Avoid creating mutex before pthread_create to make some libcs happy.