Two of those programs I am aware of can have legitimate uses:

• Process Lasso can manage which cores and core affinities a program uses, not unlike Windows' Task Manager, but also remember them. If the CPU is overly taxed by multiple programs at once, an affinity can be set to try to prioritize one over the other. This can help to reduce stutter and artifacts in live audio processing software by prioritizing it at the top with a high or real-time affinity. But with a strong enough CPU and good program management, this is unnecessary.

• Throttlestop is used for systems with Intel CPUs, usually laptops, to reconfigure the CPU's power (wattage, voltage) and speed. Intel even offers its own tool that does much the same, called Intel XTU (eXtreme Tuning Utility). Many laptops are incorrectly configured by default and will quickly overheat when stressed, causing the CPU to slow down which could be a cause for audio to not be processed correctly. By limiting the power or speed, or even setting a new artificial overheat point below the hardware's actual overheat point, it's possible to maintain an expected amount of speed.