Tuzilma is a browser-based editor for UML class diagrams, flowcharts, and system maps. Built for developers and architects who value clarity.
Works with your stack
TypeScript | PostgreSQL | React | Go | Docker | GraphQL |
Rust | Python | Kubernetes | Claude | Notion | OpenAI |
How it works
Classes, interfaces, flowchart shapes — pick from the sidebar and place them anywhere on the infinite canvas.
Draw relationships with a click. Label edges, set visibility modifiers, add stereotypes. Every UML connector type supported.
Hit Share. Anyone with the link sees your latest diagram instantly — no account, no plugin, no export.
01 / Diagram Power
Full UML class diagram support — interfaces, abstract classes, and every connector that links them. From simple associations to complex compositions, model any software architecture with the precision your team expects.
02 / Sharing
One click generates a permanent public link. Your team, client, or stakeholder can view the full diagram instantly — no account required, no downloads, no friction. The fastest path to architectural alignment.
What developers say
Finally a UML tool that doesn't require three plugins and a Java runtime. Opened the tab, drew my service diagram, shared the link in Slack. Done.
I sent an architecture diagram to a client 30 seconds after finishing it. They opened it on their phone. No friction at all — that's rare.
draw.io keeps exporting broken SVGs and Lucidchart costs a fortune. Tuzilma just works. The snap-to-grid alone saved me so much time.
03 / Smart Canvas
Magnetic alignment guides, smart snapping, and an infinite canvas that moves with your thinking. Every element lands exactly where it should — so you stay focused on architecture, not pixel-pushing.
Elements snap to each other's edges, centers, and spacing automatically.
Guides appear in real-time as you drag, showing you when things align.
Pan and zoom freely. Your diagram grows as your thinking does.
Connect Claude Desktop or Cursor and say "Create a microservices diagram" — it appears instantly.
Learn more →How we compare
| Feature | Tuzilma | draw.io | Lucidchart |
|---|---|---|---|
| MCP server (AI integration) | ✓ | – | – |
| One-click share, no cloud setup | ✓ | – | – |
| Export PNG/SVG on free tier | ✓ | ✓ | – |
| Free forever, no document limits | ✓ | ✓ | – |
| Iframe embed support | ✓ | ✓ | – |
| Real-time snap & alignment | ✓ | ✓ | ✓ |
| Full UML class diagram support | ✓ | ✓ | ✓ |
| No install required | ✓ | ✓ | ✓ |
Start free. No credit card required. Build your first diagram in under a minute.