Registry cleaners are largely considered "snake oil" for modern operating systems like Windows 10 and 11, which manage their own databases efficiently. Better Alternatives

WinThruster is commercial software. Using a "RePack" or "Portable" version to bypass the purchase constitutes software piracy. Beyond the legal aspect, using such software deprives you of technical support from the developer if the software damages your system.

: Malwarebytes and other security suites often flag WinThruster as a PUP or PUA (Potentially Unwanted Application).