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Popsicle vs Impression: catalog facts
Popsicle	Impression
Free Free and open source.	Free Free and open source under the GPLv3.
Linux, Command line	Linux
Flashes several USB drives in parallel GTK interface plus a command-line version	Minimal interface focused on one task Fits in with the GNOME desktop
Linux only Focused on writing images, with no image download feature	Linux only Fewer options than full-featured image writers
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
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.