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SioyekPapers
Free

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

 Free

Free GNOME app, supported by donations to the GNOME Foundation.

Windows, macOS, Linux Linux
  • Opens a referenced figure, table or citation in an overlay without losing your place
  • Searchable highlights, bookmarks and marks across your whole library
  • Annotation and highlighting of PDFs
  • Opens DjVu, TIFF and comic book archives
  • The last tagged release is from December 2022
  • macOS shows a quarantine warning that needs working around on first launch
  • Linux only
  • No full PDF text editing
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0 License not stated
No account needed No account needed
Works offline Works offline

Checked September 21, 2026

Checked September 23, 2026

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