Free Access: Enjoy using our tools with a sample concept pack included!
New Concepts: Fresh Concepts added regularly, including these:
Flexible Expansion: Need more? Purchase additional concept packs anytime via the [Concepts] Control.
Create and Edit: Design models and diagrams with colored shapes and classed elements.
Save Your Work: Save your creations to JSON files for easy access and sharing.
Open and Share: Load your saved files—or collaborate by opening files from others!
We never send your diagram content to our servers — your work stays with you.
📁 Your files stay private—they’re stored only on your device.
When the [File] Ribbon Tab above shows orange you're ready to go! If it does not just please refresh your page.
Not sure where to start? Open the starter showcase for inspiration.
Have a file already?
Start Fresh?