Free graphical user interface software for linux

Configurable Audible User Interface in short caui is a simple plugin-based audible user interface.
Plugins use speech synthesis software to interact with a user and perform specific actions. The main method of input is a keyboard or number pad.
This project is the successor to the Blind MP3 Player.
Enhancements:
- caui-cmd will exit immediately if caui has an mplayer process forked.

Squid Users Manager is a web-enabled and intuitive user interface written upon Ruby on Rails web development framework that manager Squid Proxy NCSA auth users across MD5 digest files.
The project is Open Source and distributed under the terms of the GPL licence.
Enhancements:
- Application Web 2.0 compliant
- New design with css and light layout.
- Ajax enabled app.
- More intuitive and elegant application.

Gwyddion is a modular program for SPM (scanning probe microscopy) data visualization and analysis. Primarily it is intended for analysis of height fields obtained by means of scanning probe microscopy techniques (AFM, MFM, STM, SNOM/NSOM), however it can be generally used for any other height field and image analysis (learn more about Gwyddion features).
This project is Free and Open Source software, covered by GNU General Public License. It aims to provide multiplatform modular program for 2D data analysis that could be easily extended by modules and plug-ins. Moreover, the status of free software enables to provide source codes to developers and users, which makes the further program improvement easier.
Gwyddion works on GNU/Linux, Microsoft Windows, Mac OS X and FreeBSD operating systems on common architectures, all systems can be used also for developement. Its graphical user interface is based on Gtk+ and port to other systems supported by Gtk+ should be possible.
Enhancements:
- The guide was brought up to date with Gwyddion 2.7.
- The coverage is now almost 100%; only a few obscure features remain underrepresented.
- The introductory part was extended. GNU sed is now required to build the guide from DocBook sources.

Cuiterm is a CUI (Composite User Interface) terminal.
CUI (Composite User Interface) is a compound type of user interface which incorporates the features of the GUI (Graphical User Interface) and the CLI (Command Line Interface) by realizing both interface in one area at the same time.
It is absolutely substantial that the CUI contains GUI elements and control language in the same area of the screen at the same time, so the incorporation is complete. CUI is not an optional, alternatively selectable combination of the two communication method but a truly new approach.
An other relevant feature of the CUI method is that it uses generated commands. When the user activated some GUI part of the user interface an automatically generated command appears to complete the task so the user can observ how the CLI part of the user interface can be used.
The cuiterm is a pilot application for the CUI methodology made to demonstrate the power of the composite user interfaces. As terminals are usually used with some shell to start simple UNIX utility programs, the Cui library can be considered as a composite user interface for the shell and some UNIX utilities. The following screenshot shows the starting screen of the cuiterm.
How to use it?
To test the composite user interface first you have to download the cuiterm and and install it. After the installation is complete the program can be started with the cuiterm command.
When the terminal emulator started it can be used the usual way by typing commands into it. Some programs and some complex commands are interpreted by the terminal and colorized (see the list below). For these commands the screen should have active areas usable with the left mouse button by double clicking on them. The output of some programs have floating menus with context sensitive functions. The menus can be accessed by the right mouse button. Some parts of the screen can be used to fire up a text entry field by holding down the left mouse button.
The following list contains some interpreted and processed commands that are worth trying.
ls -l and some variants of it
df
who
w
ps aux
stat
finger
cat /etc/fstab
Enhancements:
- This version contains new features, including an automatic GUI generator which creates dialog boxes from manual pages, a working progress bar, enhanced size bars, and some new command parsers.
- The drag and drop, the speed of the terminal, and the existing parsers were also enhanced.

qPyProfiler is a GUI (Graphical User Interface) to the Python profiler. It allow user to profile python application and browse profiling result in a convenient way. This projet starts on june 2007.

I started this project because I do not found any free software that do that for python profiling.

The project is a free software licenced under the GNU GPL V2.

giwconfig is graphical user interface which displays information about a wireless (WiFi) network interface.
Enhancements:
- The program now scans for a wireless interface on startup instead of using a hardcoded interface.

The Sajber Jukebox is a mpeg layer 3 player with a graphical user interface. Its based on Woo-jae Jungs splay for the audio and has a QT based graphical library for the interface.
Main features:
- Supports mpeg layer 3. The support for mpeg layer 1 & 2 and wav files is still in there, but untested.
- Playing of the net. By using normal http addresses, ie http://whatever.host.on.the.net/~someguy/song.mp3, you can play without having to first download.
- Forward, Rewind, Pause, Seek. The Sajber Jukebox allows for moving backwards and forwards in the song [unless its streaming, then rewind wont work]. By pressing on the progression bar you can make swift jumps to any place in the song of your liking.
- Mixer control. The Sajber Jukebox comes with a mixer control that allows you to change bass, treble, volume and pcm/dsp setting at any time without having to start a second program.
- Three types of browsers:
- File Browser. A local filemanager type of browser, which allows you to click around on your local system and select songs you wish to play.
- Standard Database. A database which allows you to recursively scan the harddisk or a directory structure in search for songs. The database is sorted by group, album and songname and makes it easy to keep track of your songs, unregardless of where on the harddisk they are located. It also supports http references in addition to ordinary files.
- Http Browser. This browser allows for playing songs of the net, and scanning home pages for songs. By giving the Http Browser an URL to a page, it will retrieve it and search it through for any references to playable files.
- Selections. You can select songs from any number of browsers, and play them with repeat and random.
- Configurability. The Sajber Jukebox is easy to configure, and provides a graphical interface instead of having to figure out how various options in the obscure rc files works.
- Saving. Selections, Standard Databases, Http Browsers and configurations can be saved to disk for easy retrieval, or autoloading at startup.
- Realtime threads. If youre a daredevil who believes that everything else on your machine oughta come second to the playing of audio, you can configure your player to use realtime scheduling.
- Bookmarks. You can save and edit bookmarks to various http or local locations for swift jumps around the filesystem or the world.
- Progression bar and timer to keep track of where in the song you are.
- Easily change between different databases and browsers.
- A smaller Players window, with the basic functions which wont cover the entire screen.