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OSFMount vs PowerISO: catalog facts
OSFMount	PowerISO
Free Free to download and use.	Freemium Offered as a free download; paid licensing details are not described on the homepage.
Windows	Windows
Mounts many image formats, including E01, VHD and ISO Read-only mounting by default protects the original image	Mounts disc images as virtual drives Creates bootable USB drives, including Windows to USB
Windows only Closed source	Closed source Many features overlap with free tools such as 7-Zip and Rufus
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

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