GCompris is an educational software suite with numerous activities for children aged 2 to 10. Some of the activities are game-orientated, but nonetheless still educational. These include computer discovery (keyboard, mouse, different mouse gestures), algebra (table memory, enumeration, double entry table, mirror image), science (the canal lock, the water cycle, the submarine, electric simulation), geography (place the country on the map), games (chess, memory, connect 4, oware, sudoku), reading practice, and others (learn to tell time, puzzles of famous paintings, vector drawing, cartoon making, etc.). It currently offers in excess of 100 activities, and more are being developed.
Genius is an arbitrary precision integer and multiple precision floating point calculator. It includes its own programming language similar in some aspects to C, bc, or Pascal. It can deal with rational numbers and complex numbers. It has matrix support as well. It uses the gmp library so it is very fast for calculations of large numbers. It has a command line and a GNOME interface. The GNOME interface supports plotting functions and 3D surfaces.
Libgda is a (relatively small) database access library. It provides a wrapper like ODBC but with more features for accessing several database engines, a general data model for use with CSV or XML files, a metadata extractor that retrieves information about database objects in a common way, and a SQL console application (like mysql, psql or sqlite3 consoles).
Squeak is an OpenSource and super-portable implementation of a multi-media capable Smalltalk-80 based object-oriented programming environment. It is written entirely in Smalltalk and has a high-performance VM, created by compiling the Smalltalk VM code into efficient and portable C code. It now uses the Self language's Morphic User Interface but still provides the original MVC GUI as well.
X Northern Captain is a file manager for X Windows. XNC has the same ideology as Norton Commander but also many additional and specific functions including a Virtual File System with support for tar, zip, rar, rpm, deb, bzip2, and lha archives, FTP support, built-in xterminal, viewer for JPEG, GIF, BMP, TGA, XPM, and XBM formats, an editor, users menu, extensions association, bookmarks for frequently used directories, and more.
wmnetload is a network interface monitor dockapp for Window Maker. It is designed to fit well with dockapps like wmcpuload and wmmemmon. It tracks whether the interface is functioning and displays current network interface throughput, along with an auto-scaling graph of recent network activity (the graph separates upstream and downstream traffic load cleanly without resorting to colors).
KDirStat (KDE Directory Statistics) is a small utility program that sums up disk usage for direcory trees, very much like the Unix 'du' command. It displays the disk space used up by a directory tree, both numerically and graphically. It is network transparent (i.e., you can use it to sum up FTP servers), and comes with predefined and user configurable cleanup actions. You can directly open a directory branch in Konqueror or the shell of your choice, compress it to a .tar.bz2 archive, or define your own cleanup actions.
ThreeDFM is a 3D file manager that uses OpenGL. Currently, only file system browsing is implemented. The main reason for this project is that using a 2D file manager is slow. More information about files can be conveyed in 3 dimensions. Not only will you be able to see the file's properties, but you will quickly be able to see a particular file's relationship to the others in the surrounding directories. A simple example of this is the file's size, as this can be shown by the size or colour of its representation. It will also be possible to view the contents of multiple directories simultaneously as they stretch off into the distance.