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