Prime95 - Prime95 is a program that searches for new Mersenne prime numbers.
CPU Frequency Selector - Cinnamon CPU Frequency Selector Applet
HeavyLoad - The individual test methods employed by HeavyLoad can be customized to fit your needs.
AIDA64 - AIDA64 is a system information, diagnostics and benchmarking solution for Windows PC.
Linpack Xtreme - Linpack Xtreme is a benchmark and the most aggressive stress testing software available today.
Udev Discover - A helping tool for udev testers, coders, hackers and consumers.