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

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