Open Source Software can be understood as software which can be used free of charge and provides license to change the source code for the users particular needs. All the materials on this list are available free of charge, and many allow access to the source code.
These products are created and maintained in a public, collaborative manner whereby users can typically download, use and modify them to meet their particular needs.
Before downloading any Open Source product, make sure to research its reputation for performance and reliability. For help, take a look at Top Tips for Evaluating Open Source Software.
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).
Screen Capture like the other applications. Only here there is a emphasis on immediacy of use and simplicity.