With this Cron Manager you're able to link snippets to the servers crontab. You can configure snippets to a minute interval and the Cron Manager will execute it. Also possible to add properties to your snippets and the return value of the snippet will be logged.
Installation via the Package Management inside MODx Revolution.For futher details see the official ADDON docs.http://rtfm.modx.com/display/ADDON/CronManager
New in CronManager 1.0.0-rc1