Sioyek vs word-sys PDF Editor
Comparing two open source alternatives to Adobe Acrobat and Foxit Reader and Nitro PDF. Use the comparison below to decide which one fits your needs.
Sioyek
GPL-3.0Cross-platform PDF viewer focused on textbooks and research papers with smart navigation, marks, bookmarks, and bibliography jumping.
word-sys PDF Editor
GPL-3.0A free, open-source PDF editor for Linux that lets you edit text, images and objects, merge documents, and export to DOCX, PPTX and more.
Side-by-side comparison
| Sioyek | word-sys PDF Editor | |
|---|---|---|
| License | GPL-3.0 | GPL-3.0 |
| Self-hostable | No | No |
| GitHub Stars | 9,924 | 114 |
| Forks | 387 | 3 |
| Open Issues | 341 | — |
| Last Commit | Oct 7, 2026 | Oct 5, 2026 |
| First Released | Jul 11, 2021 | Feb 15, 2025 |
| Categories | ||
| Tags |
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