Starvin’ Marvin

I’ve setup a simple and reliable monitoring mechanism on VPS. Basically i’m using:

• Monit:  as stated in the site, monit is a utility for managing and monitoring, processes, files, directories and filesystems on a UNIX system. Monit conducts automatic maintenance and repair and can execute meaningful causal actions in error situations. So basically I’m using it to monitor (and restart if necessary) the daemons I consider important.
• Munin: well it generates a ton of graphs and stats that allows me to check up how everything is going.

I like these tools, they are simple and nice. So what do you guys use?