Cairn is a fast, private, beautiful diagram builder you can run anywhere, no account, no cloud, no lock-in. And you can brand it as your own.
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A modern take on Visio: the power you need, in an interface a non-technical user gets in under a minute.
Auto-routing arrows (elbow / straight / curved) that re-route live. Tab spawns a connected next step; decision branches auto-label Yes / No.
Sticky notes, free text, frames that move their contents, and images you can insert or paste, Miro-style.
Describe a process in plain language and Cairn Pro draws it for you. No API key needed, it just works.
15 categories, flowcharts, business, software, marketing, strategy, project, HR and more, in a searchable gallery.
Full UI in English, Português, Español, Français & Deutsch. Plus command palette, find, lint, layers & presentation mode.
Diagrams stay in your browser. Export PNG / SVG / PDF / JSON / Mermaid, a shareable HTML viewer, or import Mermaid / CSV.
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We can ship Cairn under your brand, your name, your logo, your colours, set up for your team and your workflows. Same engine, your product.