Free Video Ripping Encoding software

1. Handbrake (Windows, Linux)
http://download.cnet.com/HandBrake/3000-2194_4-10808250.html?
http://handbrake.fr/downloads.php

2. StaxRip (Windows)
http://staxmedia.sourceforge.net/

3. AutoGordianKnot (Windows, Linux)
http://www.autogk.me.uk/modules.php?name=Downloads

Conversion from DVD to other compressed video formats.

Free HD Video Editing software

KDEnlive for Linux
http://www.kdenlive.org
http://en.wikipedia.org/wiki/Kdenlive

Avidemux for Windows and Linux
http://fixounet.free.fr/avidemux/
http://download.cnet.com/Avidemux/3000-13631_4-10829933.html

Screen video capture software for Windows and Linux

Some of them are among the best screen recording software available. Most of them are free.

XVidCap for Linux
http://xvidcap.sourceforge.net
http://en.wikipedia.org/wiki/XVidCap

recordMyDesktop for linux
http://recordmydesktop.sourceforge.net
http://en.wikipedia.org/wiki/RecordMyDesktop

Wink for linux and windows
http://www.debugmode.com/wink/


screentoaster
Free Online Screen Recorder
No installaton; java based
http://www.screentoaster.com


CamStudio: for windows
http://camstudio.org

VidShot Capturer 1.0 for Windows
http://www.geovid.com/VidShot_Capturer/

Screen2Exe 3.0 for Windows
http://www.screen-record.com/screen2exe.htm
http://download.cnet.com/Screen2Exe/3000-13631_4-10673120.html

Microsoft Expression Studio EncoderPro for Windows
http://www.microsoft.com/expression/products/EncoderPro_Overview.aspx