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unlockR vs PDF Unlocker: catalog facts
unlockR	PDF Unlocker
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source under the Apache 2.0 licence.
Linux	Android
Does one job with a minimal interface Runs locally, files are not uploaded	Processing stays on the device No account required
Only decrypts; no other PDF editing Linux is the main supported platform	Requires the correct password; it does not crack PDFs Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: Apache-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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