zCI is freeware for computer inventory. It is free but contains a lot of corporate feature. zCI has 100% web-based user interface, including its automatic data gathering mechanism. Also, zCI has peripheral inventory capability and facilities to manage device ownerships.

zCI provides client programs for Windows and Linux/Unix operating system. The client programs automatically collect hardware and software information, such as hardware list, software list, computer serial number, monitor serial number, MAC address and etc. The free zCI gives you more and better features compared to many non-free inventory softwares.

• TheOne Computer Inventory Free Edition 3.3.0
  TheOne Computer Inventory Free Edition acts as a client and uses to connect to Computer Inventory Server so that Server can store its software and hardware config,and gather OS...

• Computer Census 3.00.0037
  A network inventory, hardware inventory, and software inventory tool: Over 200 key data points are reported in these categories: Manufacturer Computer System, Product Information, BIOS, Operating System, OS Environment Settings, CPU, RAM, Motherboard, Chassis, Logical Drives, Hard Disk Detail, CD DVD Detail, Tape Drive Detail, Mouse, Keyboard, Port Connections, Serial, Parallel Ports, USB, SCSI Devices, Modem, Audio, Video, Video Adapter Settings, Printers, Network Settings (IP Address, MAC Address, DHCP, DNS, WINS), System Services (DHCP, DNS, WINS) & Network Client Services, Protocols, Network Adapters, Shared Resources, Drivers, Registered Software Packages, Hot Fixes, Service Packs, Registered Applications

• Network Inventory Software 3.9
  Network Inventory Advisor covers all network inventory needs and features software, hardware, licenses audit tools for automated inventory of networks with 20 or more than 1000 nodes

• Inventory Manager Lite 1.0
  This FREE Help Desk and Network Inventory Management program is purpose built to help network administrators and help desk staff to more easily manage the hardware, software and activity on their networks