What are some alternatives?
Lansweeper Network Inventory - Lansweeper discovers Windows, Linux and Mac machines in your network.
Speccy - Speccy - find the details of your computer's specs. Great for spotting issues or finding compatible upgrades. Download the latest version free.
Spiceworks Help Desk - Help desk software features that work for IT
CPU-Z - CPU-Z is a freeware that gathers information on some of the main devices of your system : Processor name and number, codename, process, package, cache levels.
Alloy Discovery Express - Award-winning hardware and software inventory suite for IT organizations.
Total Network Inventory - Total Network Inventory is a piece of software designed to help with managing software inventory and auditing PC systems.