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PaperKnife+Xodo
Free

Free and open source under the GPL-3.0 licence.

 Freemium

Reading and annotation are free. Editing and conversion quotas require a paid plan.

Android Windows, Android, iOS, Web
  • Works fully offline with no trackers
  • Merge, split, rotate and rearrange pages
  • The same annotation and signing tools on web, desktop and mobile
  • Works directly against Google Drive, Dropbox and OneDrive
  • Android only
  • No text editing or annotation listed
  • Conversion and advanced editing are limited without a paid plan
  • Closed source, and online tools process files on their servers
Downloadable app Downloadable app, Web application
Open source Closed source
License: GPL-3.0 License not stated
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 2, 2026

Checked September 22, 2026

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