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O&O AppBuster vs WinUtil: catalog facts
O&O AppBuster	WinUtil
Free Free of charge as part of O&O's freeware range.	Free Free and open source under the MIT licence. The author sells a faster .NET implementation…
Windows	Windows
Removes preinstalled Windows apps without scripting Shows hidden apps as well as visible ones	Installs a chosen set of applications in bulk through the package managers Tweaks, troubleshooting tools and Windows update control in the same interface
Windows only Closed source	Must be run as administrator because it makes system-wide changes The launch method downloads and runs a script from the internet
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
No account needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 21, 2026

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