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Optimizer vs BoosterX: catalog facts
Optimizer	BoosterX
Free Free and open source, no longer developed.	Free Free to download; the homepage does not mention a paid tier.
Windows	Windows
Many privacy and performance tweaks in one portable program Available in 24 languages	Shows the current state of each setting and what will change Saved profiles can be reapplied after a Windows reinstall
Deprecated and archived; the author points users to OptimizerNXT System tweaks such as stopping updates or disabling Defender can leave Windows less secure	Closed source and Windows only Performance gains depend on hardware and are claimed by the developer
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License: Proprietary
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked October 2, 2026

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