The keyword specifies . CCleaner has always been available in a Free edition, but the paid tiers offer automation and control that power users crave.
Businesses should note: If you require official support or indemnification, you must purchase a current license from Avast. But for internal, non-critical use on isolated machines, the preactivated legacy version is a pragmatic solution. CCleaner 4.15.4725 -preactivated- Business - Professional