SIW is an advanced System Information for Windows tool that gathers detailed information about your system properties and settings and displays it in an extremely comprehensible manner.
 

The system information is divided into few major categories:

Software Information: Operating System, Installed Software and Hotfixes, Processes, Services, Users, Open Files, System Uptime, Installed Codecs, Software Licenses (Product Keys / Serial Numbers / CD Key), Secrets (Password Recovery).
Hardware Information: Motherboard, Sensors, BIOS, CPU, chipset, PCI/AGP, USB and ISA/PnP Devices, Memory, Video Card, Monitor, Disk Drives, CD/DVD Devices, SCSI Devices, S.M.A.R.T., Ports, Printers.
Network Information: Network Cards, Network Shares, currently active Network Connections, Open Ports.
Network Tools: MAC Address Changer, Neighborhood Scan, Ping, Trace, Statistics