Webcron.org: crontab on the web

In the spotlight:

Webcron is an automated task service at set hours. If you know Unix or Linux you already heard about the Crontab. Webcron is a Web adaptation of this well-known Crontab. But nothing complicated at all!

Webcron allows you to do tasks at set hours by looking for a page on your website. For example, save your database, therefore you only have to prepare a script database_save.php that saves the database to a file. Add then a task to you Webcron to do the http://www.domaine.com/sauvegarde_base.php request.

Very simple and recommended.