Diagrammix 3
The most efficient tool on the market for building attractive diagrams and charts on your Mac.
Everything you need to create.
AI-Powered PRO
Describe what you need — AI creates symbols, connectors, and layouts. Works with Claude, Codex, and other MCP clients.
1000+ Symbols
11 handcrafted notation packs — from corporate to hand-drawn sketches.
Smart Connectors
Obstacle-avoiding routing. Orthogonal, Bezier, or straight — lines stay clean.
Visio Compatibility PRO
Import and export .vsdx files. Full round-trip for enterprise workflows.
UML Class Diagrams PRO
Classes with attributes, operations, and relationships.
UML Sequence Diagrams PRO
Lifelines, messages, activations, and fragments.
SVG Import & Export PRO
Full SVG support for web publishing and vector editing.
Mermaid Integration PRO
Paste Mermaid text → editable diagram. Copy back for docs.
Vector Drawing Tools
17+ tools: Bezier paths, freehand, polygons, shapes.
Auto-Layout
One-click hierarchical layout (Sugiyama algorithm).
Layers
Visibility, locking, reordering for complex diagrams.
Fill, Stroke & Effects
Gradients, patterns, shadows, opacity — full styling.
Export Everywhere
PNG, JPEG, PDF, SVG, Visio at up to 400% scale.
And more
Coming from version 2?
Diagrammix 3 uses a new document format for modern features. You can easily import your .drawing files via File → Import.