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CCleaner vs System Mechanic: catalog facts
CCleaner	System Mechanic
Freemium A free version is available to download from the official site.	Paid Paid license, listed at $54.95 and often discounted.
Windows, macOS	Windows
Clears junk files and browser traces in one place Manages startup items	Combines junk cleanup, startup management and privacy wiping Automated maintenance through ActiveCare
Closed source Some features are outside the free version	Windows only Closed source and paid
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.