Cam studio is an open source Software that provides all the basic functions for a Screencast i.e recording all screen and audio activity on our Desktop or Screen.
Camstudio Software is very ease to use and very light (1.3 MB) that you can carry it on a USB drive.New in version 2 is the ability to save your captured session to the .swf file format, meaning that your video can be streamed via HTTP using the Flash player.
CamStudio can also help in adding high-quality, anti-aliased screen captions to your recordings in seconds.The Video Annotation feature even helps in personalising your videos by including a webcam movie of yourself “picture-in-picture” over your desktop.
It comes with its own Lossless Codec that produces crystal clear results with a much smaller filesize compared with other more popular codecs, like Microsoft Video 1.
I recommend you to watch this helpful CamStudio tutorial on YouTube.
Best of all,CamStudio 100% free. No need to license it for commercial products, no registration, nothing. It is licensed under the GPL license.