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apvlvMuPDF
Free

Free and open source.

 Free

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

Windows, Linux Windows, macOS, Linux, Android, iOS, Command line
  • Vim-style keyboard navigation
  • Opens both PDF and EPUB
  • Extremely fast and small, with accurate rendering
  • The bundled mutool covers most scripted PDF manipulation
  • Small user base
  • Keyboard-centric interface takes learning
  • The viewer interface is deliberately minimal and keyboard-driven
  • Commercial use of the library needs a paid licence from Artifex
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0 License: AGPL-3.0
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.