inFlow Inventory - inFlow Inventory is inventory management software for small businesses.
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.
Snipe-IT - Managing assets with a Google doc or a shared Excel spreadsheet is more common than you think.
Pandora FMS - Pandora FMS: Opensource monitoring software
Skyware Inventory - Web-based Inventory Management.
cStatus - Monitor and scan a network.