Open Semantic Search vs Signature PDF
A side-by-side comparison of two self-hosted document management options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Open Semantic Search
Search engine and text mining for document archives
VS
Signature PDF
Sign and manipulate PDFs with collaboration, organization, compression
| Feature | Open Semantic Search | Signature PDF |
|---|---|---|
| Category | Document Management | Document Management |
| License | GPL-3.0 | AGPL-3.0 |
| Language | Shell | JavaScript |
| Setup difficulty | Hard | Medium |
| Min. RAM | 4,096 MB | 512 MB |
| Deployment | docker, bare-metal, source | docker |
| GitHub stars | ★ 1,198 | ★ 818 |
| First released | 2014 | 2025 |
| Replaces | DocuWare, M-Files | — |
Why pick each one
Choose Open Semantic Search if…
- Powerful analytics on archives
- Handles many file formats
Choose Signature PDF if…
- Released under the AGPL-3.0 license
- First-class Docker support for quick deployment
- Written in JavaScript
- Lightweight — runs in 512 MB RAM
Frequently asked questions
Is Open Semantic Search or Signature PDF better?
Neither is universally better. Open Semantic Search has the larger community, while Signature PDF is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Open Semantic Search and Signature PDF free and open-source?
Yes. Open Semantic Search is licensed under GPL-3.0 and Signature PDF under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Open Semantic Search and Signature PDF with Docker?
Open Semantic Search: yes. Signature PDF: yes.