Change Detection - http://changedetection.com/
Service that notifies visitors about web page changes. |
ChangeDetect - http://www.changedetect.com/
Service that saves favorite web pages, monitors content, and sends an automatic email notification when a web page change is detected. |
http://www.webcron.org/ - http://www.webcron.org/
Arrange to do tasks at set hours by looking for a page on your website. |