Stirling PDF vs Cromagnon

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Stirling PDF compared with Cromagnon
Detail	Stirling PDF	Cromagnon
What it does	A free, private PDF editor you can run on any infrastructure.	Free private studios and tools for PDFs, documents, spreadsheets, data, images, slides, study, citations, maths and code, all running in your browser
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Freemium	Free
Pricing	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	All studios and tools are free with no watermarks or daily limits. A free account adds sync between devices and 50 MB of cloud files, with no charge.
Key features	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	PDF annotation, highlighting, text and image insertion, signing, redaction, merging, splitting, reordering, compressing, form filling, password protection and OCR Word document creation with real DOCX file format export Excel spreadsheet editing with working formulas CSV data cleaning, reshaping and charting Flashcard study with FSRS memory model and eight study modes Citation formatting in APA, MLA, Chicago, Harvard, IEEE and 13 more styles Mathematical problem solving with step-by-step answers Photo editing with color grading, compression and format conversion Offline installation as browser app with sync on reconnect Support for 107 languages and right-to-left scripts
What makes it different	Completely free editor forever with no per-seat licensing Run on any infrastructure with files staying yours Process thousands of PDFs with AI-powered automation Every action logged and recorded for compliance	All processing happens in your browser with no file uploads required No account needed to use any studio or tool Completely free with no watermarks, trials, daily limits or ads Works offline as an installable browser app
Community votes	0	0
DR (Domain Rating by Ahrefs)	61 no change since last check	9 no change since last check
Trust Flow (Majestic)	15	0
Citation Flow (Majestic)	40	0
Referring domains (Majestic)	872	0

5 details filled in for both companies.

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