nagios vs hobbit
In my opinion, no competition at all! I've just taken on a new job where they use Nagios for monitoring. I've never used nagios before so it's a pretty steep learning curve. The setup is basic and it's may job to flesh it out and provide some detail - graphs, reports etc. Every time I have to add a new monitor or get asked to graph something, I keep thinking 'This would be so much easier with hobbit!'