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Popsicle vs UNetbootin: catalog facts
Popsicle	UNetbootin
Free Free and open source.	Free Free and open source under the GPL.
Linux, Command line	Windows, macOS, Linux
Flashes several USB drives in parallel GTK interface plus a command-line version	Runs on Windows, macOS and Linux with the same interface Optional persistence file keeps changes between boots
Linux only Focused on writing images, with no image download feature	Fails or produces unbootable media with several modern hybrid ISOs Development is slow and the interface is very dated
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0
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 23, 2026	Official website Full listing and sources Checked September 22, 2026

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