The following weblinks will take you to some very useful Open Source Software/Freeware.

1 Image Processing

AutoScreenRecorder 2.0 (Screen capture to AVI or MPEG video)
BIMP Lite (Small and simple batch processor for image files)
Bobyte AviScreen Classic (Capturing screen activity in AVI video or bitmap images)
Blender (3D modelling, animation, rendering, post-production, interactive creation and playback)
Genetica Viewer (Texture generation and storage)
GIMP (Image Manipulation Program)
Kodak EasyShare (Image edit and storage for Kodak digital cameras)
Photostory 3 (Movies from collection of images)
ScreenHunter 5 (Still image screenshots to BMP, JPEG or GIF)
WinTopo (converting raster images to vector data)
Windows Movie Maker (Load and edit movies)
Wink (Tutorial and Presentation creation by screen capture)

2 Image & Document creation

ArtRage2 (Stylish painting package)
Block CAD (3D visualisation using Lego blocks)
Google SketchUp 6 (Easy-to-learn 3D modelling program)
LEGO Digital Designer (Virtual LEGO modeller)
OpenOffice Draw (Powerful graphics package)
OpenOffice Impress (Create effective multimedia presentations)
Scribus (Desktop publishing)

3 Utilities

Audacity (Sound recorder and editor)
Avery DesignPro 5 Lite (Label maker)
Cortona (3D VRML viewer)
iTunes (Store and manage digital music, podcasts and video)
PopUp Maker 5 (Pop-up windows for web pages)
PrimoPDF (Create PDFs from MS Word etc.)
Sizer (Re-size a window without changing screen resolution)
Swiff Player (Plays swf movies)
Swiff Point Player (Allows swf movies to play in PowerPoint)

4 Design and Technology Courseware

Injection Moulding
Chip Factory
Logic System (Digital electronic circuit diagrams and PIC programming)
Crocodile Clips Elementary (Simulation for teaching the first principles of electricity,)
Programming Editor Software (Programming environment for generating PICAXE programs, includes BASIC to assembler code compiler)
Easy Sense (Datalogging (evaluation))
IKEA Kitchen Planner (Drag and drop kitchen units and appliances into layouts and view them in 3D)
IKEA Office Planner (Planning tool for offices - drag and drop into a layout and view in 3D)
GanttProject (A tool for creating a project schedule by means of an interlinked Gantt chart and resource load chart)
MindManager Smart (Icon based mind map creator)
FreeMind (Mind mapping software with hyperlinking)
West Point Bridge Designer (Model, test, and optimize a steel highway bridge)
Wild Things (Design and Print Patterns for Hats, Bags & Other Fun Stuff)
Swiff Player (Plays swf movies)
Swiff Point Player (Allows swf movies to play in PowerPoint)