Snagit is a free and simple software used to share images and short videos of your computer screen. Jing gives you the ability to add basic visual elements to your captures and share them fast.
CamStudio is a free software that records all screen and audio activity on your computer and create industry-standard AVI video files.
Screencast-O-Matic is a one-click screen capture recording software that can be used on Windows or Mac computers with no install. Users can record up to 15 minutes of a screen tutorial or a video of themselves.