1. Screencast-o-matic
Download link: http://screencast-o-matic.com/home
Features: 15-minute free screen recording, with no editing tools. Movies are watermarked. No need to download any software. Pay to remove watermark, make longer recordings and have access to editing tools.
2. Camstudio (for Windows)
Download link: http://camstudio.org
Features: Free screen recording, with no editing tools. Have more settings to choose from than Screencast-o-matic. No watermark on videos.
3. Microsoft Expression Encoder (for Windows)
Download link: https://www.microsoft.com/en-us/download/details.aspx?id=24601
Tutorial: https://www.youtube.com/watch?v=8V9l1GrzTBU
Features: 10-min free screen recording, with simple editing tools. Pay for more features.
