Nagios! It has had over 600 new projects developed for it in the past year (2011).

Where is OCSInventoryNG ??

OCSInventoryNG does not really fit into the requirements of this poll.

--jeremy

Nagios
 

Nagios XI

nagios
 

nagios

I sure nagios is the best! It's very easy and scalable system.

I like this monitor

Nagios is the only tool I've used for a long time. I've tried monit but the notification logic it wasn't so logic to me.
So Nagios is usefull, easy to understand and configure.
... and it has a huge user group.

Keep up with the good work Nagios team.

Nagios would always be my choice to ease of use and constant developments.

We use Groundworks but are converting to Nagios XI.

Good product, I would be certainly enhjoying working on it,

Obviously it is NAGIOS - ultimately you can monitor anything

I've been using Nagios since 2006 (and built some custom SNMP tools back then), so Nagios for me!

Of the year?... I'm voting shinken as I think they've made the most of the year in terms of progress.

Personally, I use nagios because I know it. I know shinken is supposed to be a drop-in replacement but I'm not motivated enough to try it. Nagios+pnp+nconf+dual-homed server w/ backup DSL+lots of custom plugins makes for a lovely monitoring system.

Nagios - I've been using Nagios for several years!