Zabbix vs Oh Dear: Which is best for you?

The fact that it is open source, it will have a positive effect on our budget and free up resources for staff training and other investments that in turn will positively impact out Zabbix utilization

There are issues with data collection timing and accuracy, occasionally causing delays between the displayed information and actual events.

Adding a page is a breeze, and the notifications are quick and easy to understand. If you use multiple pages, the price is reasonable and can easily be added to a web maintenance service for your customers.

The interface is a bit buggy and the status page lacks some feature (email subscription, link between an update and a service, ...)