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ImageUSB vs USBImager: catalog facts
ImageUSB	USBImager
Free Free to download and use.	Free Free and open source under the MIT licence.
Windows	Windows, macOS, Linux
Writes one image to many USB drives concurrently Bit-level copies that preserve slack space and the MBR	Writes compressed images without unpacking first Runs on Windows, Linux and macOS
Writing CD ISO images directly may not produce a bootable drive on every system Closed source	Deliberately minimal feature set Writing to the wrong drive erases it
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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