| What it does | A native Mac editor for text, CSVs, and data files
| Free online tools for flowcharts, charts, diagrams and timelines with no sign-up
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| Stage | Not given
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| Founded | Not given
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| Based in | US
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| Pricing model | Freemium
| Freemium
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| 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: no account required, all diagram and chart makers, PNG/SVG/PDF export, no watermark. Pro: Monthly $9.99 a month, Yearly $99.99 a year with 7-day free trial, Lifetime $239.99 once. Euro area: €10.99 a month, €109.99 a year, €259.99 once (VAT included).
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| 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
| - Flowchart and process diagram maker with canvas and text-to-diagram modes
- Text-to-diagram tools for UML, ER and sequence diagrams
- Chart tools: pie chart, line graph, gauge and Sankey diagram
- Automatic diagram layout from typed text
- Export to PNG, SVG and PDF without watermark
- Share diagrams with share links
- Pro: editable .drawio export and vector PDF
- Pro: multi-page documents and layers
- Diagram checks for unlabelled branches and dead ends
- Works on phone and computer
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| 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
| - Completely free with no account required and no watermark on exports
- Nothing uploaded: all work stays on your device in your browser
- Results computed by the same tested code, not manually typed
- Multiple export formats: PNG at 4 sizes, SVG and PDF
- Converts between formats: Mermaid to draw.io, SQL to ER, Visio to flowchart
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ● no change since last check | 3 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 2 | 0 |
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| Citation Flow (Majestic) | 20 | 19 |
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| Referring domains (Majestic) | 22 | 4 |
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Caxton
Diagram Smith