OpenSign vs Stirling-PDF
| Tagline | Open-source document e-signing platform, a self-hosted DocuSign alternative | Locally hosted web app for merging, splitting, converting, and OCR-ing PDFs |
| Category | Notes & Knowledge Base | Notes & Knowledge Base |
| Replaces | Notion, Confluence | Notion, Confluence |
| GitHub stars | 6.5k | 81k |
| Language | Nodejs | Docker |
| License | AGPL-3.0 | Apache-2.0 |
| Self-host difficulty | 3/5 Moderate | 2/5 Easy |
| Deploy options | Docker Docker Compose Manual | Docker Docker Compose |
| Managed hosting | ||
| Last updated | yesterday | today |
| View repo | View repo |
Where each falls short
The honest trade-offs — what you give up with each, versus the proprietary tools they replace.
OpenSign
- Advanced workflow automation and conditional routing (found in DocuSign) is limited
- No built-in bulk-send or template library as comprehensive as DocuSign's
- In-person signing kiosk mode is absent
- Integrations ecosystem (Salesforce, HubSpot, etc.) is much smaller than DocuSign
Stirling-PDF
- Not a document-management or collaboration tool — purely a PDF processing utility.
- Advanced features like user auth and SSO require the paid Stirling-PDF Pro license.
- No document storage or versioning; files must be uploaded and downloaded manually each session.
- OCR accuracy depends on Tesseract language packs installed in the container.
Bottom line
Choose Stirling-PDF if you want the lower-effort setup; choose Stirling-PDF for the larger community and ecosystem. Stirling-PDF has seen more recent development. Open each guide below for deploy steps and the full feature gap.
OpenSign
Open-source document e-signing platform, a self-hosted DocuSign alternative
Stirling-PDF
Locally hosted web app for merging, splitting, converting, and OCR-ing PDFs