Free usability engineering software for linux

TCPreen is a simple tool to monitor and analyze data transmitted between clients and servers through connection-oriented streams data such as a TCP sessions; it supports TCP over either IPv4 or IPv6. This tool focuses on the data stream (software/socket layer), not on the lower level transmission protocol as packet sniffers do.
TCPreen listens on a TCP port and wait for incoming connections to come in. Then, it forwards data sent by the connecting client to another server port (possibly on another computer) and forwards server responses back to the client.
TCPreen can display data on your console in real-time and/or save it to log files for later reference.There are various display formats.
While it was originally meant to help developers reverse-engineer TCP-based protocols, it can also be very useful to debug network server or client software or for a system administrator to monitor a TCP service.
Enhancements:
- libsolve/getaddrinfo.{c,h}, src/winstub.{c,h}:
- dirty kludge to resolve getaddrinfo & co at run-time
- so that tcpreen can still run on Windows 2000 and older.

Software Engineering Environment (SEE) is frame for manufacturing information. It is implemented in sevlet and xml, and is used by the web-browser.
Software Engineering Environment (SEE) attempts to provide the information manufacturing platform for software development.
SEE is a free project, that is the author will provide all of its source code at the same time.
It runs in any servlet environment (The author merely verified in the Win and Linux environment), not using any special technique and needs no auxiliary program.
All of its data are saved in XML files, and need not database. (The future release will support the option of saving data, so that the user can select some free database, such as mysql, or commercial database to improve SEE speed.)
This means that the user can run SEE without any money. (Tomcat is a free servlet environment.)
User uses all SEE functions with the web-browser. So information sharing is very convenient.
SEE supports Simplified Chinese, Traditional Chinese, and English now.( It will support any language if someone will translate.) User can switch to interfaces in different language at any time when SEE is running. And user can add language translations which will work at once.
The main body of SEE is a frame for information manufacturing. All information included in it can be costumed dynamically and all changes will get into effect immediately. This means that the user can modify or add her/his own information structure as will at any time.
SEE provides various predefined selections for information attributes, which correspond various predefined information manufacturing patterns. The user can focus on the information description when costuming information definition, and the system will implement the functions automatically. This is the core of SEE. Most functions of SEE are in this model.
The default information definition of SEE is the result that the author understands what is the Software Engineering.
Although the target of SEE is helping for software development, actually, user can use it to design any type information, such as book registering, personnel lists, and financial reports etc.
The speed of SEE is not bad. Reading and writing 20000 records needs no more than 1 second. At present, the sorting speed is 9 seconds for 5000 records. (The testing platform is 1.8G CPU and 256M memory)
Enhancements:
- The data interface to prepare supporting databases.
- The databases are not supported in this release.
- A new interface style "Beautiful Flowers".
- These flowers are photoed in parks in this year by the author.
- The author likes the honeybee who holds a flower in its mouth very much. It is the first cartoon figure by the author. It will appear when you save wrong data. :)
- The function of "Personal Message".
- User can only query the messages sent by and sent to herself/himself. And user can only remove the messages sent to herself/himself.
- After a user read a message sent to her/him, SEE will mark it as "have_read" automatically.
- The number of new arrived messages will be shown in the interface.
- The data privileges management
- When user "Remove All" or "Modify All", the "base conditions" will be checked at first. That is user can only do what she/he can do.
- The Password fields values can not be visited, except when the user, who owns the "Import" privilege to current data, exports the data.
- All the data structures of ACL tables are changed! Their keywords become the "Title". This will permit user define better ACL.
- And the "condition" in the ACL tables are implemented completely. Now any "SEE conditions" is valid.
- Snapshot for image file
- When list the data, a snapshot will be shown for the image files type, which may end with jpg/jpeg/gif/png.
- Data sorting concerned with langauges.
- Thus when sorting data in Chinese, the result is Chinese result.
- General users can not visit the "User" table! Then they can not fill in many data!
- This is a fatal bug! This means all former releases can not be used actually!
- Now all ACL tables are redesigned.
- When a new user is added without password, SEE will add some password itself! Then this new user can never login!
- This is another fatal bug!
- In the last English release, which is 0.06, the ACL data are in Chinese!
- So the English users can not use SEE at all~~
- This is still a fatal bug!
- The "Risk Items" in the table "Deviation Handling" is wrong defined.
- This will cause an error information when user clicks the "Select" button.
- The values of Password fields can be visited when query or export.
- Although the values are meaningless encoded codes, they are still security thread.
- When some quota marks in the key values, pages will report errors and the function buttons, such as Modify and Remove, can not act!
- This is because quota is also an element of web page.
- When the interface language changes, the language in audit records changes too!
- This is not permitted. Language of all data is determined when SEE is installed and can not change with interface!

Lucidity hopes to become the next generation graphical user interface focused on speed and usability.
Lucidity is being developed in Ruby and at this point Im the only developer. Although not much information is given on this site (right now, that is) I have a pretty good idea of where Im aiming towards with this interface.
Enhancements:
- This is a (testing only) local chat application that allows two or more instances of a chat application to communicate with each other.

Alternity is a multi-protocol instant messenger program for Linux. Currently Alternity only supports AIM, but has been designed to add others in the future. The project was started with two specific goals, functionality and usability.

I found in my wanderings of Linux and open source software, that many have great features, yet are not user friendly. Those that are user friendly have no features and are often poorly written. This project was started to bridge that gap, specifically with instant messenger programs.

Quizmaster project is a program designed to allow the creation of short, fun quizzes.

Quizmaster is a type-oriented quiz program that gives multiple-choice questions along the axes you provide and selects the results that most closely match your visitors responses (think SelectSmart or the Myers-Briggs test).

It comes with amusing quizzes already installed.

Quizmaster is a search engine meant to provide high-usability and powerful access to documents being searched. It does not search the web, but local files provided to it. It is meant to help the user find materials quickly.

Blue Planet is a KDE theme defined by simplicity, usability, dark-blue colors and future look.

Its including background picture that is taken form http://www.guanajuatoenlinea.com .

For those with big resolution:

1600 x 1200 pixels background can be download here:

http://ic3.deviantart.com/images/i/2003/42/2/b/Titan_Blue___221.jpg

Iconset on this screenshots are Futurosoft icons (only changed Go! icon to Fedora default). Download it from here:

http://www.kde-look.org/content/show.php?content=50667

Background color of application is white due to compatibility issues (you can put black but than text isnt readable in some programs).

CAELinux is a live DVD Linux distribution dedicated to computer aided engineering and finite element analysis. Based on PcLinuxOs, it features a full software solution for professional 3D FE analysis from CAD geometry.
It includes the Salome 3D pre/post processor, Code_Aster non-linear/multi- physics FE solver, GMSH 3D pre/post processor, GNU Octave, Scilab, and more.
Enhancements:
- This version is principaly an OS update of the previous 3a version.
- The system was upgraded to the latest PCLinuxOs 0.93.
- The kernel was updated 2.6.16 Kernels for SMP and 4Gb were added.
- 3D drivers for Nvidia and ATI were added.
- Salome was updated to 3.2.2.
- Code-Aster was updated to STA9.0.
- Calculix was updated to 1.6.
- GMSH was updated to 2.0.
- Tutorials and an introduction video were added.
- The Code-Aster documentation has been translated to English.

AldoContent is a lightweight CMS focused on usability and simplicity. It is designed for multilingual Web sites and can have sections with public and private content.

The project has file management, is extensible with plugins, and uses gettext for localization. Is written in PHP for a MySQL backend.

For authors and editors it offers rich text edition, taking them away from HTML code. Publishing content in a web site with AldoContent intalled on it is extremelly easy. Also AldoContent generates automatically the navigation menus when the authors add pages.

AldoContent is written in PHP programing language by Miguel Angel Da Vila and uses MySQL database as back-end.