Use iSentry to instantly turn your computer with web camera into a Internet-connected motion-sensing security system. Just launch iSentry, point your camera to the region you want to monitor, and prepare to receive a video or photo should any motion activity is detected.
With wide selection of settings, iSentry allows you to configure quality of pictures and video clips, enable sound, alerts and receive email notifications about the events detected. Also iSentry can upload the pictures and video clips it takes on disk or in iPhoto album.
Note that you still can download legacy iSentry v1.5 from iSentry Support web page.