Snapshot - Scheduled Screen Capture
Snapshot is an easy-to-use tool for recording the contents of the whole screen at regular intervals. It can send these snapshots to a printer, and/or the Windows clipboard, and/or save them to bitmap, JPG, GIF or PNG files. It can be configured to take snapshots at a regular interval, or on demand.
Why would you want to do this? Well who knows, but it was originally written to automatically capture share information from an on-line display.
Snapshot runs from the tool-tray to avoid getting in the picture it takes.
Snapshot is completely free to download and use.
This program is for desktop Windows only. Sorry, but it won't work on a Mac, Android or Linux.