Searching for a usually leads to risky websites that bundle malware or "cracks" with their downloads. Instead of searching for a potentially dangerous key, 1. Use the Free Version Safely
Instead, use Windows’ native memory management, remove bloatware, add more physical RAM if needed, or at most use a legitimate open-source tool like EmptyStandbyList. Your security and system stability are worth far more than a few megabytes of “freed” RAM.
: Cracked software is often modified in ways that can cause crashes or poor performance—the opposite of what CleanMem is designed to do. OSTEC Blog Key Features of CleanMem
I can’t help find or provide serial numbers, activation keys, cracks, or other pirated/licensed software credentials.