Free graphical presentation software for linux

General Graphics User Interface is an effort to produce a common graphical user interface for any command-line program.

It uses a wizard-like input front end to collect the information needed. It then calls the desired program automatically with all the necessary options.

The user is able to point&click on various options and select them in a convenient way. In order to create a new user-interface, a user doesnt need to know a programming language, since there is a graphical editor for new GGUI "scripts".

Lestat provides a connection/port scan monitoring system.

Lestat is a simple system which is designed to allow trends in port scans to be identified and displayed in a simple manner. The system comprises a Perl agent which collects packets and logs them to a database, and a presentation layer which draws graphs and presents a GUI via PHP.

Linux graphical bootsplash allows you to use custom graphics during early system startup. It makes it possible to place a nice graphic behind or above the kernel boot messages.
Linux graphical bootsplash hooks into the fbcon layer and, if activated, searches the initial ramdisk for a JPEG picture to show.
On any output operations to the console, it takes care of painting a margin around your text and a background picture behind the text with a set of special cfb functions.
Main features:
- Nice graphics (JPEG)
- Antialiased text rendering (TrueType)
- Animations (MNG)
- Progress Bar
- Display of boot messages above or below a graphic. ("verbose" and "silent" modes)
- Fully themeable
Enhancements:
- The bootsplash patch was updated to apply cleanly against Linux kernel 2.6.21.

GtkOrphan (a Perl/Gtk2 application for debian systems) is a graphical tool which analyzes the status of your installations, looking for orphaned libraries.

GtkOrphan project implements a GUI front-end for deborphan, adding the package-removal capability.

GraceTMPL is a set of C++ classes which allow data to be saved as Grace files, optionally using a template.
XmGrace is a very powerful tool to produce 2D-Plots of your data. However, though there is also support for running grace in batch mode there is a certain lack in support for automation.
When it comes to producing a presentation of your data on many sheets and your preferred formatting of the data should change sometime in the process, you could easily be confronted with a bunch of work doing the necessary changes.
The GraceTMPL classes provide an easy way to use existing grace-files as a template to format any number of graphs in a predefined way and save them as grace-files. This way you can apply the same graphical appearance to all of your data. In case your preferences change, you just alter the template and reformat your complete set of data within the shortest amount of time.
Main features:
- The application using the GraceTMPL classes can define environment variables for the sheet, each graph and each dataset. The variables can be used in the template for dynamic string replacement. Even output filenames can be templated using variable substitution.
- Datasets in the template file can be marked to be included in the destination files for easy reference.
- Datasets can be tagged with arbitrary information strings to be interpreted by the application using GraceTMPL. This way information can be passed to the application on how to create the datasets and what kind of information is intended by the template author.
- In case no template file is loaded by the application, GraceTMPL::Save will output plain sets of data tables which can easily be imported by XmGrace or other applications.

lafontaine project is a graphical logo interpreter.
It was made for educational use.
Main features:
- the interface is easy to apprehend,
- there is a specific Logo language version for each country,
- Lafontaine is highly portable (by using the gtk library)

SAgl is a portable small antialiased graphics library. It offers lines, circles, and bezier curves, as well as thick lines and fills.

It can be used on top of SDL or with X or any other graphics system.