KillerPDF vs Outline
Comparing two open source alternatives to Adobe Acrobat . Use the comparison below to decide which one fits your needs.
KillerPDF
GPL-3.0Lightweight, portable PDF editor for Windows with no subscription or telemetry.
Outline
The fastest growing-team knowledge base — beautiful, realtime collaborative, feature packed, and markdown compatible Notion and Confluence alternative.
Side-by-side comparison
| KillerPDF | Outline | |
|---|---|---|
| License | GPL-3.0 | — |
| Self-hostable | No | Yes |
| GitHub Stars | 2,555 | 39,036 |
| Forks | 151 | 3,365 |
| Open Issues | 15 | 47 |
| Last Commit | Jun 18, 2026 | Jun 23, 2026 |
| First Released | Apr 16, 2026 | May 22, 2016 |
| Categories | ||
| Tags | — |
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