Vexlio
Vexlio: A focused choice for interactive technical diagrams, math notation, and shareable detail. Ranked #34 of 44 in Diagramming Software by our editors (5.9/10); pricing: Free plan; best for interactive technical diagrams and math.
At a glance
- Editor score5.9 / 10
- PricingFree plan
- Best forInteractive technical diagrams and math
- Free planYes
- Paid from$18/mo
- Facts checked22 Sep 2026
Where it wins
- Interactive pop-ups add rich detail to diagram shapes.
- Infinite canvas with smart snapping and alignment guides.
- LaTeX, code blocks, AI components, and SVG/PDF export.
Where it doesn't
- Viewer links on the Free plan expire after 3 days.
- Collaboration and integrations are not central to the product.
- The paid annual price is shown as an annual equivalent.
Our verdict on Vexlio
Vexlio is a browser-based diagramming tool for technical diagrams, including flowcharts, UML diagrams, block diagrams, state machine diagrams, software architecture diagrams, and math diagrams. It is aimed at people who need more than static boxes and connectors: shapes can carry interactive pop-ups with text, images, code, tables, and sub-diagrams. Browser-based viewer links let recipients open published diagrams without creating an account, making Vexlio a fit for documentation, explanations, and interactive process maps.
The Free plan includes interactive pop-ups, PNG and JPG export, and viewer links that expire after 3 days. The Unlimited plan adds permanent, updatable viewer links, PNG, JPG, SVG, and PDF export, plus unlimited documents and objects. The published annual price for Unlimited is $18 per month, while Unlimited one-time costs $249 for one year of access without auto-renewal. A 30-day refund period is available. The paid tiers make the most difference for users who need lasting sharing, editable vector or PDF exports, and unrestricted project volume.
Vexlio’s strongest fit is technical communication: an infinite canvas, smart snapping, alignment guides, auto-spacing, live-edit LaTeX labels and equations, syntax-highlighted code blocks, and AI-generated editable diagram components support diagrams that combine visual structure with technical detail. Cloud and self-hosted deployment are available, including self-hosting through docker-compose. It is less suited to teams seeking a collaboration-centered workspace or a large integration ecosystem. Choose Vexlio for interactive, technically detailed diagrams and flexible deployment; choose another tool if shared editing and connected business workflows are primary requirements.
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Vexlio pricing
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Vexlio fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $18/mo |
| Real-time collaboration | Not verified |
| Diagram types | flowcharts, UML diagrams, block diagrams, state machine diagrams, software architecture diagrams, math diagrams |
| Desktop apps | Not verified |
| Offline editing | Not verified |
| Import/export formats | PNG, JPG, JPEG, PDF, SVG |
| Editor seat limit | Not verified |
| Money-back guarantee | 30 days |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Support | Email, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan (source) |
| Website | vexlio.com |
| Facts checked | 22 Sep 2026 |
Alternatives to Vexlio
- draw.ioA broad, free diagramming editor with strong format support and collaboration options.9.4
- LucidchartA broad, collaborative diagramming workspace for business and technical teams.9.3
- Microsoft VisioA mature Microsoft-focused diagramming suite with web, Teams, and desktop options.9.1
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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