The cron processor is an addition for cron to handle the output of cronjobs via a database and a web interface instead of email.
It is not a replacement of cron.
If you manage one or more servers and you have cronjobs, they send you an output by email. This can lead to flood your mailbox and important information can be overseen.
The cron processor stores all cron emails in a database and you will get a web interface to view all of your cronjobs searchable by status, title, hostname and by date.
Additionally you can send a digest of all jobs once per day by email.
More information can be found here