PdfDing vs SumatraPDF
Comparing two open source alternatives to Adobe Acrobat and Foxit Reader. Use the comparison below to decide which one fits your needs.
PdfDing
AGPL-3.0Self-hosted PDF manager, viewer, and editor with multi-device sync, tagging, and an in-browser reader; deployable via Docker.
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
| PdfDing | SumatraPDF | |
|---|---|---|
| License | AGPL-3.0 | GPL-3.0 |
| Self-hostable | Yes | No |
| GitHub Stars | 20 | 17,739 |
| Forks | — | 2,055 |
| Open Issues | 10 | 47 |
| Last Commit | Sep 12, 2026 | Oct 12, 2026 |
| First Released | Aug 25, 2026 | Oct 2, 2012 |
| Categories | ||
| Tags |
GitHub stars over time
GitHub stars over time
Similar open source alternatives
Sioyek
Cross-platform PDF viewer focused on textbooks and research papers with smart navigation, marks, bookmarks, and bibliography jumping.
Adobe Acrobat
KillerPDF
KillerPDF is a lightweight, fully portable PDF editor for Windows. Edit, merge, annotate, and sign PDFs locally with no subscription, accounts, or hidden telemetry anywhere on your computer.
Adobe Acrobat
DartPDF
A free, local PDF editor for mobile, desktop, and web. Annotate, fill forms, sign, and redact with no account or uploads.
Adobe Acrobat
PdfCraft
Open-source PDF workbench in pure Rust — read, organize, combine, split, comment and secure PDFs.
Adobe Acrobat
word-sys PDF Editor
A free, open-source PDF editor for Linux that lets you edit text, images and objects, merge documents, and export to DOCX, PPTX and more.
Adobe Acrobat
Pympress
Lightweight GTK PDF presenter for dual-screen setups, showing current slide, next slide, and presenter notes on separate displays.
Adobe Acrobat