Number 1: Basalt for Mac
18 PDF tools in one native Mac window, including redaction that destroys content and proves it
- PDF tools
- DR 15 no change since last check
PDF tools · United States
Stirling PDF
A free, private PDF editor you can run on any infrastructure.
- Community votes
- 0
- DR by Ahrefs
- 61 no change since last check
Ahrefs Domain Rating benchmarked 25 Oct 2026, rebuilt 25 Oct 2026.
Stirling PDF metrics
| Metric | Value |
|---|---|
| Domain Rating | 61 no change since last check |
| Trust Flow | 15 no change since last check |
| Citation Flow | 40 no change since last check |
| Referring domains | 872 no change since last check |
| External backlinks | 8,216 no change since last check |
Ahrefs Domain Rating benchmarked 25 Oct 2026, rebuilt 25 Oct 2026. Main build topic: Recreation/Travel (15). Majestic benchmarked 25 Oct 2026, rebuilt 25 Oct 2026. Link data built by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
Stirling PDF domain build sheet
| Domain age | 28 years |
|---|---|
| Registered | |
| Expires | |
| Registrar | Cloudflare, Inc. |
| DNSSEC | Not signed |
Stirling PDF is a free, open-source PDF editor, reader, and processor that runs on your own infrastructure. It offers 60+ tools for editing, plus automation
What it is
Stirling PDF is a free, open-source PDF platform with three core components. The PDF Reader offers lightning-fast reading with simple tools for casual use. The PDF Editor provides 60+ powerful tools for editing PDFs on any computer or server, keeping all processing private on your infrastructure. The PDF Processor enables automation of PDF workflows, including OCR, classification, validation, redaction, compression, and routing, allowing you to process thousands of PDFs at once.
You can call Stirling from your own code, connect it to tools your team already uses, or interact with it through an AI assistant. It supports APIs and MCP for programmatic document operations, with features like pipelines for chaining operations, policies for applying rules at source, and connectors for integration with existing tools.
Stirling started as a weekend experiment with one engineer and four features, posted to Reddit. Today it has grown to over 30 million downloads and runs inside 55,000 companies worldwide. The platform is validated by security experts and is used by 75% of the Fortune 500.
What it is built with
- PDF reader with lightning-fast reading
- 60+ PDF editing tools
- OCR to read scanned pages
- Classification and tagging
- Signature validation
- PDF redaction
- Compression
- Routing to multiple destinations
- API for programmatic access
- Connectors for tool integration
Pricing
Pricing model: Freemium
Free: $0/month includes 60+ PDF tools, web/desktop/self-hosted access, open-source editor, and 1,000 monthly credits. Team: $99/month for 100 users, includes everything in Free plus single sign-on, team workspace, and central control. Enterprise: Custom pricing for regulated and air-gapped deploymen
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