Office and Design

OpenOffice.org – Fully compatible office software for your school work
Dia – Make technical diagrams and flowcharts
Scribus – Create professional looking posters and magazines
GanttProject – Plan your school projects with this project management software
FreeMind – Collect your ideas with this mind mapping Software
PDF Creator – Make PDF documents from any program
Sumatra PDF – Read PDF files quickly and easily

Internet

Firefox – A safe, secure and fast web browser
Thunderbird – Manage your emails better than ever – Reclaim your inbox!
Pidgin – Talk to your friends whatever instant message client they use
Kompozer – Create web pages easily, without having to code
RSSOwl – Keep up with your favourite internet news feeds on your desktop

Art and Graphics

GIMP – Edit digital photos and create graphics
GIMP animation – Create animations
Inkscape – Make professional looking vector graphics
Blender – 3D graphic modeling, animation, rendering and playback
Tuxpaint – Drawing program for children ages 3 to 12

Mulitmedia

VLC – Play music, videos and DVDs
Audacity – Record, edit and mix music
TuxGuitar – Compose your own music
Avidemux – Edit movies and add special effects
Infra Recorder – Burn your own CDs and DVDs
CamStudio – Record your actions on a computer
Really Slick Screensavers – Great looking screensavers

Science and Mathematics

Nasa Worldwind - Discover the earth and other planets
GraphCalc – A graphical calculator
Guido Van Robot – Learn how computer programs work
CarMetal – Cool mathematical modelling tool
Maxima – University standard computer algebra system
Celestia – Explore the universe in three dimensions
Stellarium – A planetarium on your PC

Games

FreeCiv - Control the world through diplomacy and conquest
FreeCol – Discover the ‘New World’ and build an empire
TuxTyping 2 – Learn to type like a pro
Tux of Math Command – Test your mathematical skills
Winboard Chess – The classic game of chess

Utilities

GTK+
7zip
Abakt
Clamwin
HealthMonitor
Workrave

Advanced Internet

Httrack
Tight VNC
Filezilla
Azureus
WinSCP

From http://www.theopendisc.com/education