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MuPDFSioyek
Free

Free and open source under the AGPL. Commercial licensing is sold separately.

 Free

Free and open source under the GPL. The developer accepts optional donations.

Windows, macOS, Linux, Android, iOS, Command line Windows, macOS, Linux
  • Extremely fast and small, with accurate rendering
  • The bundled mutool covers most scripted PDF manipulation
  • Opens a referenced figure, table or citation in an overlay without losing your place
  • Searchable highlights, bookmarks and marks across your whole library
  • The viewer interface is deliberately minimal and keyboard-driven
  • Commercial use of the library needs a paid licence from Artifex
  • The last tagged release is from December 2022
  • macOS shows a quarantine warning that needs working around on first launch
Downloadable app Downloadable app
Open source Open source
License: AGPL-3.0 License: GPL-3.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 21, 2026

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