What are some alternatives?
When comparing Eyes Of Network and glpi-project.org GLPI, you can also consider the following products
DiamanteDesk - DiamanteDesk is an open-source easy-to-use help-desk solution.
ZenDesk - Zendesk is a beautiful, lightweight help-desk solution.
openITCOCKPIT - openITCOCKPIT is an open source out of the box monitoring framework. It can be installed on Debian based distributions through apt and provides a user friendly web interface where you can create all your hosts and services you like to monitor.
Spiceworks Help Desk - Help desk software features that work for IT
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
FusionInventory - Fork of the OCS Inventory project that enables users to inventory their IT assets.