Freeware
- Quicktime Player (Mac only): You may download QuickTime player to your Mac and record a movie, audio or screen, and do a simple editing, such as trim, split, rotate, etc. For more information, visit https://support.apple.com/en-us/HT201066
- Jing (Both PC and Mac compatible): Jing is a free version of paid screen capture software Camtasia. https://www.techsmith.com/jing-features.html
Commercial Software
CamStudio, PC only, free at http://camstudio.org/