Compare software

PDF4QTXodo PDF Studio
Free

Free and open source; donations are accepted through GitHub Sponsors.

 Paid

Paid software with a downloadable free trial.

Windows, Linux, Command line Windows, macOS, Linux
  • Viewing and editing applications in one project
  • Command-line tool for scripted PDF work
  • Native versions for Windows, macOS and Linux
  • OCR, redaction, comparison and batch processing
  • No macOS version
  • Mostly the work of a single principal developer
  • Paid licence after the trial
  • Recent rebranding to Xodo may cause confusion in documentation
Downloadable app Downloadable app
Open source Closed source
License: MIT License not stated
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 1, 2026

Checked September 23, 2026

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