Free serious software for linux

Ch is an embeddable C/C++ interpreter for cross-platform scripting, shell programming, 2D/3D plotting, numerical computing, and embedded scripting. C/Ch/C++ allow users to use one language, anywhere and everywhere, for any programming tasks. Ch is the solution for:
- Embedded Scripting
- Enterprise
- Academic
- Plotting and Numerical Computing
C++ is C plus plus minus. Ch is C plus (Ch = C+). Ch is a C interpreter. Ch is C with classes and high-level extensions. Ch is a superset of C. Note that C++ is no longer a superset of C. For example, VLA and IEEE floating-point arithmetic in C are not supported in C++.
C is for low-level system programming and embedded systems; C++ for large-scale projects. Ch is optimal for platform-independent scripting in numerical computing and visualization, rapid application development, Web programming and plotting, embedded scripting, shell programming and integration with legacy systems.
Like C++, Ch is designed to be a superset of C, which means a C program can run in Ch without modification. Unlike C++ which is designed for serious professional programmers (elite), Ch is designed for both novice beginners with no computer experience (average Joe and John) as well as experienced programmers.

KNetworkConf is a KDE Control Center module to configure TCP/IP settings on a Linux machine. I developed it because I couldnt find any application to configure TCP/IP settings from within KDE, and I think this is a "must have" app for a serious Desktop Enviroment like KDE.
Main features:
- Configure installed network devices (you cant add new ones for now) in
- basic and advanced mode (ie. dont auto configure broadcast and netmask
- values).
- Autodetection of wireless interfaces.
- Configure the default gateway and gateway device.
- Configure host and domain names.
- Add/remove DNS servers (/etc/resolv.conf).
- Add/Remove known Hosts (/etc/hosts).
Enhancements:
- Ugraded network backend to GST 1.1.4
- Support for two new platforms: Specifix and Vine Linux, being now 15 the platforms supported.
- Parcial wireless support: Autodetection of wireless network interfaces.
- New dialog for managing static hosts.
- Many User Interface enhaments.
- Lots of bug fixes
- Lots of code cleanups
- Updated spanish, french, german, polish and norewian translations.

The Aurora Project is an attempt to create a new generation of Linux distributions. It will try to break free from old patterns and establish Linux as a serious world player.
Currently, Aurora Project consists of the Aurora Desktop Environment which, unlike most other Linux-based desktop environments, dont attempts to accomplish everything but to remove the focus from system configuration and desktop customizing by creating an easy-to-use out-of-the-box intuitive and beutiful desktop experience.
The UI is (for now) somewhat Microsoft Windows-inspired. I am satisfied with the general layout of the panel and start menu, currently I am busy designing the core functionality of the desktop with the panel as my number one priority. Also there is the session manager, the desktop manager and the shared library.
The Aurora Project currently consists of two major components - the panel and the shared library.
Main features:
- Windows-like user interface with a start menu.
- Freedesktop-compliant application menu (compatible with GNOME and KDE).
- Frequently used applications are easy to access.

Libundo is a simple, easy-to-use library which manages recording and playback of undo/redo information for application developers.
It is designed to be simple to plug in to existing applications and require only a minimal amount of support code be written to support multi-level undo/redo.
Libundo handles all the details of determining what has changed after an undoable action is performed, recording that information and saving it for use when an undo is performed.
Libundo makes it easy for application writers to give end users what they want.
Libundo is available under the GNU GPL and is not tied to any GUI libraries or application frameworks. Libundo has a C language interface.
Enhancements:
- Fixed a serious bug, when allocation of a large chunk (larger than the page size) after an undo operation would corrupt the memory. The bug was introduced in 0.8.1.

Inflex is a solution to the problem of scanning emails which are passing through your server, both local and outbound.
Inflex give to you the ability to block or pass email based on any set of tests you choose, varying from Virus scans to Email text content.
Inflex can do this because it unpacks all email sent through it in such a way that normal UNIX tests can be performed to determine the nature of the email.
The need for a system as Inflex arose out of the need to be able to tightly control and filter emails at a central location, existing scanning systems could only scan local mail.
Local mail only scanning is a serious limitation when a corporation is trying to prevent unwanted email from getting out to the world.
Inflexs ability to scan for arbitary file names and types allows administrators to react instantly to virus threats which may not yet be detectable in antivirus packages [typical
delays between virus deployment and antivirus updates can be as long as 48 hours, more than ample to cause an entire network to be crippled].
Installation:
./install.sh
Enhancements:
- Updated ripMIME engine
- Added Fedora support
- Added HBEV AV support

AreaEdit is a formVista compatible fork of the rapidly developing Xinha project. AreaEdit project is the code that is generated by the formVista FVML < htmleditor > tag during rendering.
Xinha itself is a fork of the original HTMLArea component created by Mihai Bazon and sponsored by Interactivetools. AreaEdit maintains the original HTMLArea (modified BSD) license and is free to use.
While it is designed to work within formVista without modification, AreaEdit does not requre formVista. It is a fully functional editor component supporting a number of plugins and can as easily be used as a standalone editor component for any PHP web application.
The primary difference between AreaEdit and Xinha is one of focus. The Xinha project aims to be a rapidly developing feature-filled editor with many plugins.
By contrast, AreaEdit takes a slower minimalists approach. It aims first and foremost to be functional and maintainable. The feature set we are focusing on is targeted squarely at the serious non-technical business user. Business users dont care about the nuances of HTML
and

tags, they just want the editor to work as they would expect.
If your audience is primarly composed to developers or those familar with HTML, you should take a look at Xinha.
AreaEdit is known to work with MSIE 5.5 or later and any modern Gecko based browsers. (FireFox, Mozilla).
Enhancements:
- This release finally works around the intermittent MSIE "Operation Aborted" error that were seen in some installs.
- The documentation and examples have been updated.

libsift is an algorithm to identify and locate interesting points within an image. For all such points, a descriptive signature is extracted.
The signatures can be stored and matched among multiple images, allowing for a large number of interesting applications, such as aligning overlapping images and identifying objects or motion within image sequences.
libsift is used by the autopano-sift program to create panorama images.
This library is a 100% C# implementation of the SIFT algorithm ("Scale-Invariant Feature Transform") and additional matching algorithms. The SIFT algorithm is an image feature location and extraction algorithm which provides the following key advantages over similar algorithms:
- Combined feature location and extraction algorithm.
- The keypoint locations are more precise and repeatable, because SIFT uses subpixel localization and multiple scale keypoint identification
- The descriptors are highly distinctive. For example, I tested with up to 300,000 keypoints while matching a large 60 picture panorama and it did not have a single invalid match.
- The feature vectors can be efficiently correlated using probabilistic algorithms like Best-Bin-First kd-tree search.
Enhancements:
- A serious bug in the Gaussian sigma computation and a bug in the DoG scale handling were fixed.