Zabbix - Track, record, alert and visualize performance and availability of IT resources
Total Network Inventory - Total Network Inventory is a piece of software designed to help with managing software inventory and auditing PC systems.
ManageEngine RecoveryManager Plus - RecoveryManager Plus is one such enterprise backup solution which has the ability to easily backup and restores both the domain controllers and virtual machines.
Lansweeper - Lansweeper discovers Windows, Linux and Mac machines in your network.
Lastpass - LastPass is an online password manager and form filler that makes web browsing easier and more secure.
Spiceworks Help Desk - Help desk software features that work for IT