Hardinfo!

CPU-Z is a freeware system profiler (system monitor) application for Microsoft Windows (for all versions from 95 on) that detects the central processing unit, RAM, motherboard chipset, and other hardware features of a modern personal computer, and presents the information in one window. CPU-Z is more in-depth in some areas than the features that Windows XP provides to identify various hardware components, and is thus needed to identify certain components without opening the case, especially the core revision and RAM clock rate. »

Speccy is an advanced System Information tool for your PC, available as installer version and as portable version in 24 languages. It does a quick scan of your machine and gives you a complete rundown of every piece of gear thats in your computer.

GPU-Z is a lightweight utility designed to give you all information about your video card and GPU. The application supports ATI and Nvidia cards. The information provided includes GPU model, BIOS version, clock rate, memory size, etc as well as live readings of card sensors for temperature, voltage and current.

The Open Hardware Monitor is a free open source software that monitors temperature sensors, fan speeds, voltages, load and clock speeds of a computer.

AIDA64 is a system information, diagnostics, and auditing application developed by FinalWire Ltd., that runs on Windows, Android, iOS, Windows Phone and Tizen operating systems. It displays detailed information on the components of a computer. Information can be saved to file in formats such as HTML, CSV, or XML.

SidebarDiagnostics - A simple sidebar for Windows desktop that displays hardware diagnostic information.

I-Nex is an application that gathers information for hardware components available on your system and displays it using an user interface similar to the popular Windows tool CPU-Z.

From the makers of CPU-Z, the PC WIZARD is among the most advanced system information programs on the market. PC WIZARD 2008 is a powerful utility designed especially for detection of hardware, but also some more analysis. It's able to identify a large scale of system components and supports the latest technologies and standards. This tool is periodically updated (usually once per month) in order to provide most accurate results.

The Belarc Advisor builds a detailed profile of your installed software and hardware, network inventory, missing Microsoft hotfixes, anti-virus status, security benchmarks, and displays the results in your Web browser. All of your PC profile information is kept private on your PC and is not sent to any web server.

cinnamon-cpufreq-applet - Port of Gnome 3 CPUFreq applet to Cinnamon - with some fixes.

Psensor is a graphical hardware temperature monitor for Linux. It can monitor the temperature of the motherboard and CPU sensors (using lm-sensors), the temperature of the NVidia GPUs (using XNVCtrl), the temperature of ATI/AMD GPUs, the temperature of the Hard Disk Drives (using hddtemp or libatasmart), the rotation speed of the fans (using lm-sensors), the CPU usage (since 0.6.2.10 and using Gtop2).

lshw (Hardware Lister) is a small tool to provide detailed information on the hardware configuration of the machine. It can report exact memory configuration, firmware version, mainboard configuration, CPU version and speed, cache configuration, bus speed, etc. on DMI-capable x86 or EFI (IA-64) systems and on some PowerPC machines.

SiSoftware Sandra (the System ANalyser, Diagnostic and Reporting Assistant) is an information & diagnostic utility. It should provide most of the information (including undocumented) you need to know about your hardware, software and other devices whether hardware or software.