CamStudio

CamStudio is able to record all screen and audio activity on your computer and create industry-standard AVI video files and using its built-in SWF Producer can turn those AVIs into lean, mean, bandwidth-friendly Streaming Flash videos (SWFs)

What's new in this version: Version 2.5 beta adds recording a region by windows, mouse-button-based visual feedback, true multilanguage support, recording audio from speakers, and a variety of other new features and fixes.