The Dude - MikroTik is a Latvian company which was founded in 1996 to develop routers and wireless ISP systems. MikroTik now provides hardware and software for Internet connectivity in most of the countries around the world.
Total Network Inventory - Total Network Inventory is a piece of software designed to help with managing software inventory and auditing PC systems.
Pandora FMS - Pandora FMS: Opensource monitoring software
Lansweeper - Lansweeper discovers Windows, Linux and Mac machines in your network.
cStatus - Monitor and scan a network.
Spiceworks Help Desk - Help desk software features that work for IT