Koodo Reader vs SumatraPDF
Comparing two open source alternatives to Adobe Acrobat and Foxit Reader . Use the comparison below to decide which one fits your needs.
Koodo Reader
AGPL-3.0Cross-platform ebook reader supporting PDF, EPUB, MOBI, comics and more, with sync across Windows, macOS, Linux, Android, iOS, and Web.
SumatraPDF
GPL-3.0Lightweight, free PDF, eBook, and comic reader for Windows that launches instantly and stays out of the way; multi-format support with minimal interface.
Side-by-side comparison
| Koodo Reader | SumatraPDF | |
|---|---|---|
| License | AGPL-3.0 | GPL-3.0 |
| Self-hostable | No | No |
| GitHub Stars | 27,882 | 17,322 |
| Forks | 2,076 | 2,020 |
| Open Issues | 273 | 135 |
| Last Commit | Aug 16, 2026 | Aug 16, 2026 |
| First Released | Mar 5, 2020 | Oct 2, 2012 |
| Categories | ||
| Tags |
Similar open source alternatives
PdfDing
Self-hosted PDF manager, viewer, and editor with multi-device sync, tagging, and an in-browser reader; deployable via Docker.
Adobe Acrobat
Outline
The fastest growing-team knowledge base — beautiful, realtime collaborative, feature packed, and markdown compatible Notion and Confluence alternative.
Notion
Sioyek
Cross-platform PDF viewer focused on textbooks and research papers with smart navigation, marks, bookmarks, and bibliography jumping.
Adobe Acrobat
KillerPDF
Lightweight, fully portable PDF editor for Windows. Edit, merge, annotate, and sign PDFs locally with no subscription, accounts, or hidden telemetry anywhere.
Adobe Acrobat
Pympress
Lightweight GTK PDF presenter for dual-screen setups, showing current slide, next slide, and presenter notes on separate displays.
Adobe Acrobat