Speccy - Speccy - find the details of your computer's specs. Great for spotting issues or finding compatible upgrades. Download the latest version free.

arandr - ARandR is designed to provide a simple visual front end for XRandR.

HWiNFO - Professional System Information and Diagnostics. Comprehensive Hardware Analysis, Monitoring and Reporting for Windows and DOS. FREEWARE. download. Advertisements.

Glxinfo - glxinfo is a command-line tool that can help you diagnose problems with your 3D acceleration setup.

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.

Hardinfo - Hardinfo is a system information and benchmark tool for Linux.