Arten Science is offering MonitorMyMac (http://www.monitormymac.co.uk) for Mac OS X free to parents. The software takes timed snapshots of your computer Screen and/or takes snapshots from your connected webcam.
These images can be stored locally, or remotely and are also optionally uploaded to your FTP server. This means they can they be accessed from anywhere with Internet access. MonitorMyMac is the “big brother” of ScreenAudit. It has a built-in image viewer and the ability to automatically send images to a remote server via FTP.