KillerPDF vs SumatraPDF
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.
KillerPDF
GPL-3.0KillerPDF 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.
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
| KillerPDF | SumatraPDF | |
|---|---|---|
| License | GPL-3.0 | GPL-3.0 |
| Self-hostable | No | No |
| GitHub Stars | 4,073 | 17,739 |
| Forks | 324 | 2,055 |
| Open Issues | 48 | 47 |
| Last Commit | Oct 7, 2026 | Oct 12, 2026 |
| First Released | Apr 16, 2026 | Oct 2, 2012 |
| Categories | ||
| Tags |
GitHub stars over time
GitHub stars over time
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