Caxton vs Mermaid Viewer

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

Caxton compared with Mermaid Viewer
Detail	Caxton	Mermaid Viewer
What it does	A native Mac editor for text, CSVs, and data files	Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Freemium	Freemium
Pricing	Caxton Free (free forever); Caxton Pro monthly at $9.99 USD, annual at $99.99 USD, or lifetime at $179.99 USD. Team pricing starts at $79 to $99.99 USD per seat per year.	Free: unlimited editor and preview, 3 saved diagrams, 5 AI uses total, PNG export 1× with watermark. Starter: $6.99/month or $69.90/year; 30 saved diagrams, 500 AI conversations per month, PNG export up to 4× without watermark. Pro: $11.99/month or $119.90/year; unlimited diagrams, unlimited AI, PNG
Key features	Text editing with memory-mapped files for large documents CSV and TSV table editing with column transforms Column transformations and data type preservation CSV validation with structural and data rules File comparison without copying data Extract matches and columns to new documents Local processing with no cloud uploads or telemetry	Live preview of Mermaid code as you type AI diagram generator, editor and syntax fixer PNG export on every plan; JPG, SVG and PDF on Pro All 22+ Mermaid diagram types supported Share diagrams via public links and embeds Save diagrams to cloud with folders and version history Keyboard shortcuts and autocomplete Mobile-responsive editor with pan and pinch-zoom
What makes it different	Opens files directly from disk without importing or uploading, preserving data exactly as stored Combines text editor, CSV table editor, and log viewer in one native Mac application Handles multi-gigabyte files with consistent performance and one-millisecond keystroke latency Preserves leading zeros, long IDs, and data types exactly as stored in the file All files stay local to your Mac with no cloud processing, telemetry, or vendor lock-in	No account or sign-up required to start editing diagrams Affordable pricing: Starter at $6.99/month, Pro at $11.99/month Diagrams render in your browser; nothing stored unless you choose to save Fast editor with instant rendering and clear error messages
Community votes	0	0
DR (Domain Rating by Ahrefs)	4 no change since last check	6 +1 (up) since last check
Trust Flow (Majestic)	2	3
Citation Flow (Majestic)	20	23
Referring domains (Majestic)	22	12

5 details filled in for both companies.

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