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.
Udev Discover - A helping tool for udev testers, coders, hackers and consumers.
SIW - SIW is an advanced System Information for Windows tool.
Neofetch - Fancier version of Screenfetch that displays colors and supports more platforms.
Hardinfo - Hardinfo is a system information and benchmark tool for Linux.
CPU Frequency Selector - Cinnamon CPU Frequency Selector Applet