CryptPad vs KillerPDF
Comparing two open source alternatives . Use the comparison below to decide which one fits your needs.
CryptPad
AGPL-3.0End-to-end encrypted collaborative office suite with zero-knowledge privacy.
KillerPDF
GPL-3.0Lightweight, portable PDF editor for Windows with no subscription or telemetry.
Side-by-side comparison
| CryptPad | KillerPDF | |
|---|---|---|
| License | AGPL-3.0 | GPL-3.0 |
| Self-hostable | Yes | No |
| GitHub Stars | 7,511 | 743 |
| Forks | 810 | 24 |
| Open Issues | 377 | 5 |
| Last Commit | Apr 17, 2026 | Apr 25, 2026 |
| First Released | Oct 31, 2014 | Apr 16, 2026 |
| Categories | ||
| Tags |
Similar open source alternatives
Etherpad
Open-source real-time collaborative text editor you can self-host.
Google Docs
ONLYOFFICE
Self-hosted office suite with real-time collaboration.
Google Docs
LimeSurvey
Powerful open-source online survey platform used by millions worldwide.
Google Forms
Grist
Open-source spreadsheet-database hybrid with flexible relational data modeling.
Google Sheets
HedgeDoc
Real-time collaborative markdown note editor you can self-host — write together with rich formatting and seamless sharing.
Google Docs
LibreOffice
A powerful free and open source office suite with word processing, spreadsheets, presentations, and more.
Microsoft 365