Blender
Blender is an application that has enjoyed wide spread usage and continues to build a strong fan base. From CGI stills to cinema quality animation, this node based application is easy to learn and will take your students creative energy in new directions.
Download Blender for Mac and PC at http://www.blender.org/
MPEG Streamclip
MPEG Streamclip is a powerful free video converter, player, editor for Mac and Windows. It can play many movie files, not only MPEGs; it can convert MPEG files between muxed/demuxed formats for authoring; it can encode movies to many formats, including iPod; it can cut, trim and join movies. MPEG Streamclip can also download videos from YouTube and Google by entering the page URL.
Supported input formats: MPEG, VOB, PS, M2P, MOD, VRO, DAT, MOV, DV, AVI, MP4, TS, M2T, MMV, REC, VID, AVR, M2V, M1V, MPV, AIFF, M1A, MP2, MPA, AC3, …
Download for Mac and PC at http://www.squared5.com/
Cinematize
Cinematize is an easy-to-use yet powerful introductory product for anybody who works with DVDs. Cinematize 2 offers everything you need to start extracting audio and video clips from DVDs. Extracted clips are ready for use in popular applications including QuickTime, Windows Movie Maker, Premiere, Final Cut, iMovie, PowerPoint, iTunes, even an iPod
Download for Mac and PC at http://www.miraizon.com
Omni Outliner
A great application for Macs that allows you to organise just about everything that opens and closes.
Download for Mac at http://www.omnigroup.com
Tablet Draw
A great little application for anyone wanting to use a graphics tablet but not wanting to be out of pocket for Photoshop or Corel Painter, again a Mac app only, sorry PC users.
download at http://www.moosoftware.com
Gimp
Can’t afford Photoshop? This extraordinary open source application has most of the functionality of Photoshop and you can put it on your network free. Available for most OS
Download for Mac and PC at http://www.gimp.org/
Terragen
If you have students who are wanting to investigate working with proceedural Landscape generating software, then Teragen is definitely worth looking at. Available in both Non Commercial and Commercial versions for Mac and PC.
Download at http://www.planetside.co.uk/
Apophysis
Open source Fractal flame generator. You can do some interesting things with this free app. For PC only.
Download at http://www.apophysis.org/
Here is an extraordinary tutorial site for teachers, (patricularly for Photoshop and Photography) Worth a look. Check it out