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PDF ToolkitXodo
Free

Free and open source under the Apache-2.0 licence.

 Freemium

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

Android Windows, Android, iOS, Web
  • Works fully offline on the device
  • Merge, split, compress and page editing in one app
  • The same annotation and signing tools on web, desktop and mobile
  • Works directly against Google Drive, Dropbox and OneDrive
  • Android only
  • No tagged releases on GitHub
  • 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: Apache-2.0 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.