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Qrca vs Barcoder: catalog facts
Qrca	Barcoder
Free Free and open source under the GPL-3.0+.	Free Free and open source under GPL-2.0-or-later.
Linux, Android	Linux
Both scans and generates QR codes Runs on Linux desktops and Android	Creates both barcodes and QR codes Runs locally instead of through a website
Scanning needs a camera Narrow single-purpose tool	Linux only Little documentation about supported formats
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-2.0-or-later
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 October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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