Some folks just aren't happy with GNOME 3. Some aren't happy with the whole concept while others think it just really needs more simmering. Regardless of where you might fall in that spectrum, there may be hope yet.
When you release code under the GNU General Public License (GPL), you undertake a specific set of obligations. Many of these obligations, such as providing a copyright notice and a copy of the GPL version you are using, are relatively simple.
With Nagios, the leading open source infrastructure monitoring application, you can monitor your whole enterprise by using a distributed monitoring scheme in which local slave instances of Nagios perform monitoring tasks and report the results back to a single master.